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Article On Wealth Out Of Waste Essay

This article is about recycling of waste materials. For recycling of waste energy, see Energy recycling.

Recycling is the process of converting waste materials into new materials and objects. It is an alternative to "conventional" waste disposal that can save material and help lower greenhouse gas emissions (compared to plastic production,[1][2] for example). Recycling can prevent the waste of potentially useful materials and reduce the consumption of fresh raw materials, thereby reducing: energy usage, air pollution (from incineration), and water pollution (from landfilling).

Recycling is a key component of modern waste reduction and is the third component of the "Reduce, Reuse, and Recycle" waste hierarchy.[3][4]

There are some ISO standards related to recycling such as ISO 15270:2008 for plastics waste and ISO 14001:2004 for environmental management control of recycling practice.

Recyclable materials include many kinds of glass, paper, and cardboard, metal, plastic, tires, textiles, and electronics. The composting or other reuse of biodegradable waste—such as food or garden waste—is also considered recycling.[2] Materials to be recycled are either brought to a collection center or picked up from the curbside, then sorted, cleaned, and reprocessed into new materials destined for manufacturing.

In the strictest sense, recycling of a material would produce a fresh supply of the same material—for example, used office paper would be converted into new office paper or used polystyrene foam into new polystyrene. However, this is often difficult or too expensive (compared with producing the same product from raw materials or other sources), so "recycling" of many products or materials involves their reuse in producing different materials (for example, paperboard) instead. Another form of recycling is the salvage of certain materials from complex products, either due to their intrinsic value (such as lead from car batteries, or gold from circuit boards), or due to their hazardous nature (e.g., removal and reuse of mercury from thermometers and thermostats).

History[edit]

Origins[edit]

Recycling has been a common practice for most of human history, with recorded advocates as far back as Plato in the fourth century BC.[citation needed] During periods when resources were scarce and hard to come by, archaeological studies of ancient waste dumps show less household waste (such as ash, broken tools, and pottery)—implying more waste was being recycled in the absence of new material.[5]

In pre-industrial times, there is evidence of scrap bronze and other metals being collected in Europe and melted down for perpetual reuse.[6] Paper recycling was first recorded in 1031 when Japanese shops sold repulped paper.[7][8] In Britain dust and ash from wood and coal fires was collected by "dustmen" and downcycled as a base material used in brick making. The main driver for these types of recycling was the economic advantage of obtaining recycled feedstock instead of acquiring virgin material, as well as a lack of public waste removal in ever more densely populated areas.[5] In 1813, Benjamin Law developed the process of turning rags into "shoddy" and "mungo" wool in Batley, Yorkshire. This material combined recycled fibers with virgin wool. The West Yorkshire shoddy industry in towns such as Batley and Dewsbury lasted from the early 19th century to at least 1914.

Industrialization spurred demand for affordable materials; aside from rags, ferrous scrap metals were coveted as they were cheaper to acquire than virgin ore. Railroads both purchased and sold scrap metal in the 19th century, and the growing steel and automobile industries purchased scrap in the early 20th century. Many secondary goods were collected, processed and sold by peddlers who scoured dumps and city streets for discarded machinery, pots, pans, and other sources of metal. By World War I, thousands of such peddlers roamed the streets of American cities, taking advantage of market forces to recycle post-consumer materials back into industrial production.[9]

Beverage bottles were recycled with a refundable deposit at some drink manufacturers in Great Britain and Ireland around 1800, notably Schweppes.[10] An official recycling system with refundable deposits was established in Sweden for bottles in 1884 and aluminum beverage cans in 1982; the law led to a recycling rate for beverage containers of 84–99 percent depending on type, and a glass bottle can be refilled over 20 times on average.

Wartime[edit]

New chemical industries created in the late 19th century both invented new materials (e.g. Bakelite [1907]) and promised to transform valueless into valuable materials. Proverbially, you could not make a silk purse of a sow's ear—until the US firm Arhur D. Little published in 1921 "On the Making of Silk Purses from Sows' Ears", its research proving that when "chemistry puts on overalls and gets down to business ... new values appear. New and better paths are opened to reach the goals desired."[11]

Recycling (or "salvage", as it was then usually known) was a major issue for governments throughout World War II. Financial constraints and significant material shortages due to war efforts made it necessary for countries to reuse goods and recycle materials.[12] These resource shortages caused by the world wars, and other such world-changing occurrences, greatly encouraged recycling.[13] The struggles of war claimed much of the material resources available, leaving little for the civilian population.[12] It became necessary for most homes to recycle their waste, as recycling offered an extra source of materials allowing people to make the most of what was available to them. Recycling household materials meant more resources for war efforts and a better chance of victory.[12] Massive government promotion campaigns, such as the National Salvage Campaign in Britain and the Salvage for Victory campaign in the United States, were carried out on the home front in every combative nation, urging citizens to donate metal, paper, rags, and rubber as a matter of patriotism.

Post-World War II[edit]

A considerable investment in recycling occurred in the 1970s, due to rising energy costs.[14] Recycling aluminum uses only 5% of the energy required by virgin production; glass, paper and other metals have less dramatic but very significant energy savings when recycled feedstock is used.[15]

Although consumer electronics such as the television have been popular since the 1920s, recycling of them was almost unheard of until early 1991.[16] The first electronic waste recycling scheme was implemented in Switzerland, beginning with collection of old refrigerators but gradually expanding to cover all devices.[17] After these schemes were set up, many countries did not have the capacity to deal with the sheer quantity of e-waste they generated or its hazardous nature. They began to export the problem to developing countries without enforced environmental legislation. This is cheaper, as recycling computer monitors in the United States costs 10 times more than in China. Demand in Asia for electronic waste began to grow when scrap yards found that they could extract valuable substances such as copper, silver, iron, silicon, nickel, and gold, during the recycling process.[18] The 2000s saw a large increase in both the sale of electronic devices and their growth as a waste stream: in 2002, e-waste grew faster than any other type of waste in the EU.[19] This caused investment in modern, automated facilities to cope with the influx of redundant appliances, especially after strict laws were implemented in 2003.[20][21][22][23]

As of 2014, the European Union has about 50% of world share of the waste and recycling industries, with over 60,000 companies employing 500,000 persons, with a turnover of €24 billion.[24] Countries have to reach recycling rates of at least 50%, while the lead countries are around 65% and the EU average is 39% as of 2013.[25]

Legislation[edit]

Supply[edit]

For a recycling program to work, having a large, stable supply of recyclable material is crucial. Three legislative options have been used to create such a supply: mandatory recycling collection, container deposit legislation, and refuse bans. Mandatory collection laws set recycling targets for cities to aim for, usually in the form that a certain percentage of a material must be diverted from the city's waste stream by a target date. The city is then responsible for working to meet this target.[2]

Container deposit legislation involves offering a refund for the return of certain containers, typically glass, plastic, and metal. When a product in such a container is purchased, a small surcharge is added to the price. This surcharge can be reclaimed by the consumer if the container is returned to a collection point. These programs have been very successful, often resulting in an 80 percent recycling rate.[26] Despite such good results, the shift in collection costs from local government to industry and consumers has created strong opposition to the creation of such programs in some areas.[2] A variation on this is where the manufacturer bears responsibility for the recycling of their goods. In the European Union, the WEEE Directive requires producers of consumer electronics to reimburse the recyclers' costs.[27]

An alternative way to increase supply of recyclates is to ban the disposal of certain materials as waste, often including used oil, old batteries, tires, and garden waste. One aim of this method is to create a viable economy for proper disposal of banned products. Care must be taken that enough of these recycling services exist, or such bans simply lead to increased illegal dumping.[2]

Government-mandated demand[edit]

Legislation has also been used to increase and maintain a demand for recycled materials. Four methods of such legislation exist: minimum recycled content mandates, utilization rates, procurement policies, and recycled product labeling.[2]

Both minimum recycled content mandates and utilization rates increase demand directly by forcing manufacturers to include recycling in their operations. Content mandates specify that a certain percentage of a new product must consist of recycled material. Utilization rates are a more flexible option: industries are permitted to meet the recycling targets at any point of their operation or even contract recycling out in exchange for tradeable credits. Opponents to both of these methods point to the large increase in reporting requirements they impose, and claim that they rob industry of necessary flexibility.[2][28]

Governments have used their own purchasing power to increase recycling demand through what are called "procurement policies." These policies are either "set-asides," which reserve a certain amount of spending solely towards recycled products, or "price preference" programs which provide a larger budget when recycled items are purchased. Additional regulations can target specific cases: in the United States, for example, the Environmental Protection Agency mandates the purchase of oil, paper, tires and building insulation from recycled or re-refined sources whenever possible.[2]

The final government regulation towards increased demand is recycled product labeling. When producers are required to label their packaging with amount of recycled material in the product (including the packaging), consumers are better able to make educated choices. Consumers with sufficient buying power can then choose more environmentally conscious options, prompt producers to increase the amount of recycled material in their products, and indirectly increase demand. Standardized recycling labeling can also have a positive effect on supply of recyclates if the labeling includes information on how and where the product can be recycled.[2]

Recyclates[edit]

Recyclate is a raw material that is sent to, and processed in a waste recycling plant or materials recovery facility which will be used to form new products.[29] The material is collected in various methods and delivered to a facility where it undergoes re-manufacturing so that it can be used in the production of new materials or products. For example, plastic bottles that are collected can be re-used and made into plastic pellets, a new product.[30]

Quality of recyclate[edit]

The quality of recyclates is recognized as one of the principal challenges that needs to be addressed for the success of a long-term vision of a green economy and achieving zero waste. Recyclate quality is generally referring to how much of the raw material is made up of target material compared to the amount of non-target material and other non-recyclable material.[31] Only target material is likely to be recycled, so a higher amount of non-target and non-recyclable material will reduce the quantity of recycling product.[31] A high proportion of non-target and non-recyclable material can make it more difficult for re-processors to achieve "high-quality" recycling. If the recyclate is of poor quality, it is more likely to end up being down-cycled or, in more extreme cases, sent to other recovery options or landfilled.[31] For example, to facilitate the re-manufacturing of clear glass products there are tight restrictions for colored glass going into the re-melt process.

The quality of recyclate not only supports high-quality recycling, but it can also deliver significant environmental benefits by reducing, reusing and keeping products out of landfills.[31] High-quality recycling can help support growth in the economy by maximizing the economic value of the waste material collected.[31] Higher income levels from the sale of quality recyclates can return value which can be significant to local governments, households, and businesses.[31] Pursuing high-quality recycling can also provide consumer and business confidence in the waste and resource management sector and may encourage investment in that sector.

There are many actions along the recycling supply chain that can influence and affect the material quality of recyclate.[32] It begins with the waste producers who place non-target and non-recyclable wastes in recycling collection. This can affect the quality of final recyclate streams or require further efforts to discard those materials at later stages in the recycling process.[32] The different collection systems can result in different levels of contamination. Depending on which materials are collected together, extra effort is required to sort this material back into separate streams and can significantly reduce the quality of the final product.[32] Transportation and the compaction of materials can make it more difficult to separate material back into separate waste streams. Sorting facilities are not one hundred per cent effective in separating materials, despite improvements in technology and quality recyclate which can see a loss in recyclate quality.[32] The storage of materials outside where the product can become wet can cause problems for re-processors. Reprocessing facilities may require further sorting steps to further reduce the amount of non-target and non-recyclable material.[32] Each action along the recycling path plays a part in the quality of recyclate.

Quality recyclate action plan (Scotland)[edit]

The Recyclate Quality Action Plan of Scotland sets out a number of proposed actions that the Scottish Government would like to take forward in order to drive up the quality of the materials being collected for recycling and sorted at materials recovery facilities before being exported or sold on to the reprocessing market.[32]

The plan's objectives are to:[33]

  • Drive up the quality of recyclate.
  • Deliver greater transparency about the quality of recyclate.
  • Provide help to those contracting with materials recycling facilities to identify what is required of them
  • Ensure compliance with the Waste (Scotland) regulations 2012.
  • Stimulate a household market for quality recyclate.
  • Address and reduce issues surrounding the Waste Shipment Regulations.

The plan focuses on three key areas, with fourteen actions which were identified to increase the quality of materials collected, sorted and presented to the processing market in Scotland.[33]

The three areas of focus are:[32]

  1. Collection systems and input contamination
  2. Sorting facilities – material sampling and transparency
  3. Material quality benchmarking and standards

Recycling consumer waste[edit]

Collection[edit]

A number of different systems have been implemented to collect recyclates from the general waste stream. These systems lie along the spectrum of trade-off between public convenience and government ease and expense. The three main categories of collection are "drop-off centers," "buy-back centers", and "curbside collection."[2]

[edit]

Main article: Curbside collection

Curbside collection encompasses many subtly different systems, which differ mostly on where in the process the recyclates are sorted and cleaned. The main categories are mixed waste collection, commingled recyclables, and source separation.[2] A waste collection vehicle generally picks up the waste.

At one end of the spectrum is mixed waste collection, in which all recyclates are collected mixed in with the rest of the waste, and the desired material is then sorted out and cleaned at a central sorting facility. This results in a large amount of recyclable waste, paper especially, being too soiled to reprocess, but has advantages as well: the city need not pay for a separate collection of recyclates and no public education is needed. Any changes to which materials are recyclable is easy to accommodate as all sorting happens in a central location.[2]

In a commingled or single-stream system, all recyclables for collection are mixed but kept separate from other waste. This greatly reduces the need for post-collection cleaning but does require public education on what materials are recyclable.[2][6]

Source separation is the other extreme, where each material is cleaned and sorted prior to collection. This method requires the least post-collection sorting and produces the purest recyclates, but incurs additional operating costs for collection of each separate material. An extensive public education program is also required, which must be successful if recyclate contamination is to be avoided.[2]

Source separation used to be the preferred method due to the high sorting costs incurred by commingled (mixed waste) collection. However, advances in sorting technology have lowered this overhead substantially. Many areas which had developed source separation programs have since switched to what's called co-mingled collection.[6]

Buy-back centers[edit]

Buy-back centers differ in that the cleaned recyclates are purchased, thus providing a clear incentive for use and creating a stable supply. The post-processed material can then be sold. If this is profitable, this conserves the emission of greenhouse gases; if unprofitable, it increases the emission of greenhouse gasses. Government subsidies are necessary to make buy-back centres a viable enterprise. In 1993, according to the U.S. National Waste & Recycling Association, it costs on average US$50 to process a ton of material, which can be resold for US$30.[2]

In the US, the value per ton of mixed recyclables was US$180 in 2011, US$80 in 2015, and $US$100 in 2017.[34]

In 2017, glass is essentially valueless, because of the low cost of sand, its major component; low oil costs thwarts plastic recycling.[34]

In 2017, Napa, California was reimbursed about 20% of its costs in recycling.[34]

Drop-off centers[edit]

Drop-off centers require the waste producer to carry the recyclates to a central location, either an installed or mobile collection station or the reprocessing plant itself. They are the easiest type of collection to establish but suffer from low and unpredictable throughput.

Distributed recycling[edit]

For some waste materials such as plastic, recent technical devices called recyclebots[35] enable a form of distributed recycling. Preliminary life-cycle analysis (LCA) indicates that such distributed recycling of HDPE to make filament of 3-D printers in rural regions is energetically favorable to either using virgin resin or conventional recycling processes because of reductions in transportation energy.[36][37]

Sorting[edit]

Once commingled recyclates are collected and delivered to a central collection facility, the different types of materials must be sorted. This is done in a series of stages, many of which involve automated processes such that a truckload of material can be fully sorted in less than an hour.[6] Some plants can now sort the materials automatically, known as single-stream recycling. In plants, a variety of materials is sorted such as paper, different types of plastics, glass, metals, food scraps, and most types of batteries.[38] A 30 percent increase in recycling rates has been seen in the areas where these plants exist.[39]

Initially, the commingled recyclates are removed from the collection vehicle and placed on a conveyor belt spread out in a single layer. Large pieces of corrugated fiberboard and plastic bags are removed by hand at this stage, as they can cause later machinery to jam.[6]

Next, automated machinery such as disk screens and air classifiers separate the recyclates by weight, splitting lighter paper and plastic from heavier glass and metal. Cardboard is removed from the mixed paper and the most common types of plastic, PET (#1) and HDPE (#2), are collected. This separation is usually done by hand but has become automated in some sorting centers: a spectroscopic scanner is used to differentiate between different types of paper and plastic based on the absorbed wavelengths, and subsequently divert each material into the proper collection channel.[6]

Strong magnets are used to separate out ferrous metals, such as iron, steel, and tin cans. Non-ferrous metals are ejected by magnetic eddy currents in which a rotating magnetic fieldinduces an electric current around the aluminum cans, which in turn creates a magnetic eddy current inside the cans. This magnetic eddy current is repulsed by a large magnetic field, and the cans are ejected from the rest of the recyclate stream.[6]

Finally, glass is sorted according to its color: brown, amber, green, or clear. It may either be sorted by hand,[6] or via an automated machine that uses colored filters to detect different colors. Glass fragments smaller than 10 millimetres (0.39 in) across cannot be sorted automatically, and are mixed together as "glass fines."[40]

This process of recycling as well as reusing the recycled material has proven advantageous because it reduces amount of waste sent to landfills, conserves natural resources, saves energy, reduces greenhouse gas emissions, and helps create new jobs. Recycled materials can also be converted into new products that can be consumed again, such as paper, plastic, and glass.[41]

The City and County of San Francisco's Department of the Environment is attempting to achieve a citywide goal of generating zero waste by 2020.[42] San Francisco's refuse hauler, Recology, operates an effective recyclables sorting facility in San Francisco, which helped San Francisco reach a record-breaking diversion rate of 80%.[43]

Rinsing[edit]

Food packaging should no longer contain any organic matter (organic matter, if any, needs to be placed in a biodegradable waste bin or be buried in a garden[44]). Since no trace of biodegradable material is best kept in the packaging before placing it in a trash bag, some packaging also needs to be rinsed.[45]

Recycling industrial waste[edit]

Although many government programs are concentrated on recycling at home, 64% of waste in the United Kingdom is generated by industry.[46] The focus of many recycling programs done by industry is the cost–effectiveness of recycling. The ubiquitous nature of cardboard packaging makes cardboard a commonly recycled waste product by companies that deal heavily in packaged goods, like retail stores, warehouses, and distributors of goods. Other industries deal in niche or specialized products, depending on the nature of the waste materials that are present.

The glass, lumber, wood pulp and paper manufacturers all deal directly in commonly recycled materials; however, old rubber tires may be collected and recycled by independent tire dealers for a profit.

Levels of metals recycling are generally low. In 2010, the International Resource Panel, hosted by the United Nations Environment Programme (UNEP) published reports on metal stocks that exist within society[47] and their recycling rates.[47] The Panel reported that the increase in the use of metals during the 20th and into the 21st century has led to a substantial shift in metal stocks from below ground to use in applications within society above ground. For example, the in-use stock of copper in the USA grew from 73 to 238 kg per capita between 1932 and 1999.

The report authors observed that, as metals are inherently recyclable, the metal stocks in society can serve as huge mines above ground (the term "urban mining" has been coined with this idea in mind[48]). However, they found that the recycling rates of many metals are very low. The report warned that the recycling rates of some rare metals used in applications such as mobile phones, battery packs for hybrid cars and fuel cells, are so low that unless future end-of-life recycling rates are dramatically stepped up these critical metals will become unavailable for use in modern technology.

The military recycles some metals. The U.S. Navy's Ship Disposal Program uses ship breaking to reclaim the steel of old vessels. Ships may also be sunk to create an artificial reef. Uranium is a very dense metal that has qualities superior to lead and titanium for many military and industrial uses. The uranium left over from processing it into nuclear weapons and fuel for nuclear reactors is called depleted uranium, and it is used by all branches of the U.S. military use for armour-piercing shells and shielding.

The construction industry may recycle concrete and old road surface pavement, selling their waste materials for profit.

Some industries, like the renewable energy industry and solar photovoltaic technology, in particular, are being proactive in setting up recycling policies even before there is considerable volume to their waste streams, anticipating future demand during their rapid growth.[49]

Recycling of plastics is more difficult, as most programs are not able to reach the necessary level of quality. Recycling of PVC often results in downcycling of the material, which means only products of lower quality standard can be made with the recycled material. A new approach which allows an equal level of quality is the Vinyloop process. It was used after the London Olympics 2012 to fulfill the PVC Policy.[50]

E-waste recycling[edit]

Main article: Computer recycling

E-waste is a growing problem, accounting for 20–50 million metric tons of global waste per year according to the EPA. It is also the fastest growing waste stream in the EU.[19] Many recyclers do not recycle e-waste responsibly. After the cargo barge Khian Sea dumped 14,000 metric tons of toxic ash in Haiti, the Basel Convention was formed to stem the flow of hazardous substances into poorer countries. They created the e-Stewards certification to ensure that recyclers are held to the highest standards for environmental responsibility and to help consumers identify responsible recyclers. This works alongside other prominent legislation, such as the Waste Electrical and Electronic Equipment Directive of the EU the United States National Computer Recycling Act, to prevent poisonous chemicals from entering waterways and the atmosphere.

In the recycling process, television sets, monitors, cell phones, and computers are typically tested for reuse and repaired. If broken, they may be disassembled for parts still having high value if labor is cheap enough. Other e-waste is shredded to pieces roughly 10 centimetres (3.9 in) in size, and manually checked to separate out toxic batteries and capacitors which contain poisonous metals. The remaining pieces are further shredded to 10 millimetres (0.39 in) particles and passed under a magnet to remove ferrous metals. An eddy current ejects non-ferrous metals, which are sorted by density either by a centrifuge or vibrating plates. Precious metals can be dissolved in acid, sorted, and smelted into ingots. The remaining glass and plastic fractions are separated by density and sold to re-processors. Television sets and monitors must be manually disassembled to remove lead from CRTs or the mercury backlight from LCDs.[51][52][53]

Plastic recycling[edit]

Main article: Plastic recycling

Plastic recycling is the process of recovering scrap or waste plastic and reprocessing the material into useful products, sometimes completely different in form from their original state. For instance, this could mean melting down soft drink bottles and then casting them as plastic chairs and tables.[54]

Physical recycling[edit]

Some plastics are remelted to form new plastic objects; for example, PET water bottles can be converted into polyester destined for clothing. A disadvantage of this type of recycling is that the molecular weight of the polymer can change further and the levels of unwanted substances in the plastic can increase with each remelt.

Chemical recycling[edit]

For some polymers, it is possible to convert them back into monomers, for example, PET can be treated with an alcohol and a catalyst to form a dialkyl terephthalate. The terephthalate diester can be used with ethylene glycol to form a new polyester polymer, thus making it possible to use the pure polymer again.

Waste plastic pyrolysis to fuel oil[edit]

Another process involves conversion of assorted polymers into petroleum by a much less precise thermal depolymerization process. Such a process would be able to accept almost any polymer or mix of polymers, including thermoset materials such as vulcanized rubber tires and the biopolymers in feathers and other agricultural waste. Like natural petroleum, the chemicals produced can be used as fuels or as feedstock. A RESEM Technology[55] plant of this type in Carthage, Missouri, USA, uses turkey waste as input material. Gasification is a similar process but is not technically recycling since polymers are not likely to become the result. Plastic Pyrolysis can convert petroleum based waste streams such as plastics into quality fuels, carbons. Given below is the list of suitable plastic raw materials for pyrolysis:

  • Mixed plastic (HDPE, LDPE, PE, PP, Nylon, Teflon, PS, ABS, FRP, etc.)
  • Mixed waste plastic from waste paper mill
  • Multi-layered plastic

Recycling loops[edit]

The (ideal) recycling process can be differentiated into three loops, one for manufacture (production-waste recycling) and two for disposal of the product (product and material recycling).[56]

The product's manufacturing phase, which consists of material processing and fabrication, forms the production-waste recycling loop. Industrial waste materials are fed back into, and reused in, the same production process.

The product's disposal process requires two recycling loops: product recycling and material recycling.[56] The product or product parts are reused in the product recycling phase. This happens in one of two ways: the product is used retaining the product functionality ("reuse") or the product continues to be used but with altered functionality ("further use").[56] The product design is unmodified, or only slightly modified, in both scenarios.

Product disassembly requires material recycling where product materials are recovered and recycled. Ideally, the materials are processed so they can flow back into the production process.[56]

Recycling codes[edit]

Main article: Recycling codes

In order to meet recyclers' needs while providing manufacturers a consistent, uniform system, a coding system was developed. The recycling code for plastics was introduced in 1988 by the plastics industry through the Society of the Plastics Industry.[57] Because municipal recycling programs traditionally have targeted packaging—primarily bottles and containers—the resin coding system offered a means of identifying the resin content of bottles and containers commonly found in the residential waste stream.[58]

Plastic products are printed with numbers 1–7 depending on the type of resin. Type 1 (polyethylene terephthalate) is commonly found in soft drink and water bottles. Type 2 (high-density polyethylene) is found in most hard plastics such as milk jugs, laundry detergent bottles, and some dishware. Type 3 (polyvinyl chloride) includes items such as shampoo bottles, shower curtains, hula hoops, credit cards, wire jacketing, medical equipment, siding, and piping. Type 4 (low-density polyethylene) is found in shopping bags, squeezable bottles, tote bags, clothing, furniture, and carpet. Type 5 is polypropylene and makes up syrup bottles, straws, Tupperware, and some automotive parts. Type 6 is polystyrene and makes up meat trays, egg cartons, clamshell containers, and compact disc cases. Type 7 includes all other plastics such as bulletproof materials, 3- and 5-gallon water bottles, and sunglasses.[59] Having a recycling code or the chasing arrows logo on a material is not an automatic indicator that a material is recyclable but rather an explanation of what the material is. Types 1 and 2 are the most commonly recycled.

Economic impact[edit]

Critics[who?] dispute the net economic and environmental benefits of recycling over its costs, and suggest that proponents of recycling often make matters worse and suffer from confirmation bias. Specifically, critics argue that the costs and energy used in collection and transportation detract from (and outweigh) the costs and energy saved in the production process; also that the jobs produced by the recycling industry can be a poor trade for the jobs lost in logging, mining, and other industries associated with production; and that materials such as paper pulp can only be recycled a few times before material degradation prevents further recycling.[60]

The National Waste and Recycling Association (NWRA), reported in May 2015, that recycling and waste made a $6.7 billion economic impact in Ohio, U.S., and employed 14,000 people.[61]

Cost–benefit analysis[edit]

There is some debate over whether recycling is economically efficient. It is said[by whom?] that dumping 10,000 tons of waste in a landfill creates six jobs while recycling 10,000 tons of waste can create over 36 jobs. However, the cost effectiveness of creating the additional jobs remains unproven. According to the U.S. Recycling Economic Informational Study, there are over 50,000 recycling establishments that have created over a million jobs in the US.[65]

Two years after New York City declared that implementing recycling programs would be "a drain on the city," New York City leaders realized that an efficient recycling system could save the city over $20 million.[66] Municipalities often see fiscal benefits from implementing recycling programs, largely due to the reduced landfill costs.[67] A study conducted by the Technical University of Denmark according to the Economist found that in 83 percent of cases, recycling is the most efficient method to dispose of household waste.[6][15] However, a 2004 assessment by the Danish Environmental Assessment Institute concluded that incineration was the most effective method for disposing of drink containers, even aluminium ones.[68]

Fiscal efficiency is separate from economic efficiency. Economic analysis of recycling does not include what economists call externalities, which are unpriced costs and benefits that accrue to individuals outside of private transactions. Examples include: decreased air pollution and greenhouse gases from incineration, reduced hazardous waste leaching from landfills, reduced energy consumption, and reduced waste and resource consumption, which leads to a reduction in environmentally damaging mining and timber activity. About 4,000 minerals are known, of these only a few hundred minerals in the world are relatively common.[69] Known reserves of phosphorus will be exhausted within the next 100 years at current rates of usage.[70][71] Without mechanisms such as taxes or subsidies to internalize externalities, businesses may ignore them despite the costs imposed on society.[citation needed] To make such nonfiscal benefits economically relevant, advocates have pushed for legislative action to increase the demand for recycled materials.[2] The United States Environmental Protection Agency (EPA) has concluded in favor of recycling, saying that recycling efforts reduced the country's carbon emissions by a net 49 million metric tonnes in 2005.[6] In the United Kingdom, the Waste and Resources Action Programme stated that Great Britain's recycling efforts reduce CO2 emissions by 10–15 million tonnes a year.[6] Recycling is more efficient in densely populated areas, as there are economies of scale involved.[2]

Certain requirements must be met for recycling to be economically feasible and environmentally effective. These include an adequate source of recyclates, a system to extract those recyclates from the waste stream, a nearby factory capable of reprocessing the recyclates, and a potential demand for the recycled products. These last two requirements are often overlooked—without both an industrial market for production using the collected materials and a consumer market for the manufactured goods, recycling is incomplete and in fact only "collection".[2]

Free-market economist Julian Simon remarked "There are three ways society can organize waste disposal: (a) commanding, (b) guiding by tax and subsidy, and (c) leaving it to the individual and the market". These principles appear to divide economic thinkers today.[72]

Frank Ackerman favours a high level of government intervention to provide recycling services. He believes that recycling's benefit cannot be effectively quantified by traditional laissez-faire economics. Allen Hershkowitz supports intervention, saying that it is a public service equal to education and policing. He argues that manufacturers should shoulder more of the burden of waste disposal.[72]

Paul Calcott and Margaret Walls advocate the second option. A deposit refund scheme and a small refuse charge would encourage recycling but not at the expense of fly-tipping. Thomas C. Kinnaman concludes that a landfill tax would force consumers, companies and councils to recycle more.[72]

Most free-market thinkers detest subsidy and intervention because they waste resources. Terry Anderson and Donald Leal think that all recycling programmes should be privately operated, and therefore would only operate if the money saved by recycling exceeds its costs. Daniel K. Benjamin argues that it wastes people's resources and lowers the wealth of a population.[72]

Trade in recyclates[edit]

Certain countries trade in unprocessed recyclates. Some have complained that the ultimate fate of recyclates sold to another country is unknown and they may end up in landfills instead of being reprocessed. According to one report, in America, 50–80 percent of computers destined for recycling are actually not recycled.[73][74] There are reports of illegal-waste imports to China being dismantled and recycled solely for monetary gain, without consideration for workers' health or environmental damage. Although the Chinese government has banned these practices, it has not been able to eradicate them.[75] In 2008, the prices of recyclable waste plummeted before rebounding in 2009. Cardboard averaged about £53/tonne from 2004–2008, dropped to £19/tonne, and then went up to £59/tonne in May 2009. PET plastic averaged about £156/tonne, dropped to £75/tonne and then moved up to £195/tonne in May 2009.[76]

The three chasing arrows of the international recycling logo
Glass recovered by crushing only one kind of beer bottle
A three-sided bin at a railway station in Germany, intended to separate paper (left) and plastic wrappings (right) from other waste (back)
Recycling sorting facility and processes
Early sorting of recyclable materials: glass and plastic bottles in Poland
A recycling point in New Byth, Scotland, with separate containers for paper, plastics, and differently colored glass
Mounds of shredded rubber tires are ready for processing
Computer processors retrieved from waste stream
A container for recycling used plastic spoons into material for 3D printing
Loops for production-waste, product and material recycling
Recycling codes on products
Wrecked automobiles gathered for smelting

The modern civilization is now struggling with the problems of high build up of waste and its impact on the immediate and global environment. The present scenario calls for a smart handling of waste which includes processing and recycling as per the latest technology. Proper waste management helps us be protective towards the environment. In fact, due collection of waste and disposal is the key to make the global cleanliness and sustainability programmes successful. Here we are providing you four (4) speech on Waste Management to help you with this topic in your examination. Good luck! You can select any waste management speech according to your and requirement:

Speech on Waste Management

Waste Management Speech – 1

Dear All! Welcome to the school auditorium!

Before I begin my speech on waste management, please allow me to extend special thanks to our College Committee Members and Principal for always encouraging programmes based on social awareness. I sincerely hope that my fellow students would reap maximum benefits out of it by informing themselves about the burning issues of our times that our nation is grappling with and what we as the young generation of today can do to curb these escalating issues.

One such problem that has caught people’s attention in the current scenario is the ever increasing waste and our inability to deal with it. With the ever growing human population and increasing living standard of people, new settlements are seen burgeoning and industries have also been established to meet the growing human needs for survival. Of course, new agricultural methods are adopted with the help of pesticides and fertilizers for meeting the growing needs for consumption. So much other things are also practiced for a comfy living. In return, waste matter is generated from industrial and domestic activities, which is dumped into our surroundings.

Cities are now struggling with the problems of high build up of waste and its impact on our immediate and global environment. As a result, environmental pollution has come to an alarming stage where our environment is experiencing an irreparable damage. Solid and liquid wastes as well as gas particles released from the industries; run off pesticides and fertilizers from the agricultural practices as well as household sewage from urban regions have come to a point beyond disposal.

However, this problem has also given citizens an opportunity to look for solutions by involving their society and private sectors, by involving latest innovations for disposal of waste and last but not the least, involving behavioral changes and raising people’s consciousness.

It’s high time when we have to do a smart handling of “waste” and actually understand whether waste is indeed a waste or not. There is an obvious requirement for the latest waste disposal technology which is centered on municipalities and makes use of high/energy technology in order to progress towards processing and recycling of waste.

The easier waste management method would be to bring down the formation of waste materials. This way we can control the quantity of waste thrown in the landfills. You can recycle old materials for waste reduction and it can be bags, jars, repairing broken pieces rather than buying a new one, avoiding the use of disposable items, such as plastic glass and bags, putting into use second hand products and purchasing products that don’t require much designing.

Then composting is yet again a hassle-free and natural bio-degradation based process which makes use of organic waste, i.e. kitchen waste and remains of garden or plants and transforms it into nutrient-rich food for your plants. It is one of the excellent methods of waste disposal where it can transform unsafe organic items into safe compost.

Landfills are the highly sought after methods for the disposal of waste these days. Landfills are only successful where there is a lot of space and unfortunately it’s a success only in developed countries. However, it is said that landfills lead to water and air pollution and inevitably affect the environment. So besides this, you can look for other methods I have just described for waste management and protect your environment from the hazardous impact of piled up waste.

Thank You!!

Waste Management Speech – 2

Today is the World Environment Day and our company has always emphasized on adopting environment-friendly measures and doing waste management. I would like to share some important thoughts on waste management on this occasion.

Waste disposal or waste management refers to managing the waste from its initiation to its final removal. This includes collation, transportation, processing, re-cycling and finally disposal of waste along with monitoring, regulation and control. It also covers the lawful and regulatory aspects that relates to the waste management, including the instructions and guidance on recycling and disposal of waste management, etc.

The phrase usually relates to all types of waste, whether produced during the withdrawal of raw materials, the dispensation of raw materials into final goods, consumption of final good, or other human activities such as metropolitan (institutional, residential and commercial), farming and social (household hazardous waste, health care and sewage sludge, etc.) The objective of the waste management is to minimize the hazardous effect of waste materials on health, environment or aesthetics.

The practice of waste management varies country-wise (developed and developing nations), region-wise (urban and rural area) and sector-wise (residential and industrial). While urban regions may employ advanced machines and latest technology to supervise the waste, rural areas may be more dependent upon the human labour; residential areas may utilize safe and sound process whereas industries may utilize giant machines, etc in order to control the factory waste products. The waste materials at the institutional and residential level in the metros and cities are administered by the local authorities also known as Municipal Corporation; while the management of harmless industrial and commercial waste is accomplished by the generator of those waste.

I would now like to point out the most commonly used methods for waste management:

Landfills – This is managed by throwing the daily garbage in the landfills; it is the most common method used today.

Recovery and Recycling – Through this method, the useful items from the discarded is extracted for the next use such as conversion into energy, usable heat, fuel, electricity, etc.

Combustion or Incineration – In this method, community solid wastes are burned at high temperatures in order to convert the same into gaseous products or residue.

Plasma Gasification – Plasma is a basically an electrically charged gas. In this method, the molecular bonds of the waste are broken down due to the intense heat in the container.

Waste to Energy – In this method, the non-recyclable waste materials are converted into useful electricity, heat or fuel through various processes.

Composting – It is a natural process of bio-degradation; it converts the kitchen, plant and garden waste into nutritional food for the plants.

Waste Minimization – The best method is to minimize the creation of waste products by repairing the broken utensils, avoidance of plastic bags, etc.

It is important that we are protective towards our environment and always follow the 3Rs of waste hierarchy: ‘Reduce’, ‘Re-use’ and ‘Recycle’ in order to save our environment.

Thank You!

Waste Management Speech – 3

Good morning respected Principal, teachers and my dear friends.

The topic allocated to me for our today’s assembly is ‘Waste Management’. We as human beings should necessarily be aware and cautious about this topic.

This term means the management of the waste. So, what exactly does waste mean?  As our teacher has always taught us that waste means something that is eliminated or discarded as no longer useful or required after a stage. It is something worthless.

We as human beings should understand that everything that is called waste, involves some cost and effort of somebody or the other. We should minimize or further aim at completely eliminating the waste from our lives. Waste is both a consequence and a symptom of lives lived or things used unwisely.

Waste management is the science that deals with prevention and monitoring of wastes. Though it is a science, but it is not a difficult one. We do not need a rocket science implementation for this. It is as simple as monitoring our activities and actions so that we ultimately release the least amount of waste.

Collection of waste and disposal of rubbish plays an extremely important role in the global cleanliness and sustainability drive. Most crucial is this accompanied with people’s health and the conservation of resources being the responsibility of every government. Our government has created many garbage dumps that clearly indicate solid waste in separate box and other waste in separate box. This is deliberately done so as to make it convenient for the companies or government to get this waste recycled and ready for next use in some other form.

In earlier generations during our great great grandparent’s times, people used to dump their waste by digging a hole beneath the surface. At that point of time, this was considered the best as this could easily be decomposed and act as fertilizer of some sort. But for our generation or the coming one, this option is not at all feasible. This is so because, the population earlier was less and hence waste creation was less, also due to harsh chemicals and varied artificial products today; it is not at all easy for the waste to be decomposed.

Keeping in mind the healthy pollution free air and overall environment; we should focus on managing our waste and even monitor the activities of others so that we ensure less creation of waste.

To conclude my point of discussion; I would just request you all to please watch your actions very closely and ensure the minimal wastage. We should educate the public on the importance of conserving environment by managing solid wastes. We all have the responsibility to make people learn the impacts which one can avail as benefits through managing wastes. Please spread the message and help us save our environment. Let’s aim at complete elimination or the perfect management of waste all around.

Thank you for being a part of this discussion. Your presence encouraged me to put forward my point in the most effective way. Thank you!


 

Waste Management Speech – 4

Hello friends, welcome to this seminar on the occasion of the World Environment Day. It feels so good to see such a large number of enthusiastic audience. I am glad that we all are gathered here to share our views on the environmental related topics.

I chose ‘waste management’ as my topic for today’s discussion. Managing waste is, in itself, a great deed that one can do to directly contribute for the society and the mother earth. One should monitor their activities and the amount of waste produced because of those activities.

Amongst all, the companies or the industries specifically the ones that manufacture should opt for the processes or techniques that control the waste production. In order to make our surroundings and environment healthy one should manage the waste properly. Manufacturing companies should encourage the consumers or customers to bring their own reusable for packaging and also the public should be given priority to choose reusable products.

To understand it more precisely, I would say that waste management is the process of treating solid wastes. It also offers variety of solutions for recycling items that don’t belong to trash or are completely discarded and of no use. Waste management is about how garbage and waste can be used as a valuable resource for us and our future generations. Waste management disposes of the products and substances that you have used in a safe and efficient manner. Rubbish, garbage and waste can cause air and water pollution. Rotting garbage is also known to produce lot many harmful gases that mix with the air and can cause breathing problems in people.

Waste management is something that each and every household, human being and business owner in the world needs. There are many authorities that collect such waste and focus on recycling it for the betterment of the society. This is done by method of regular collections. These industries work on overall concept of waste management. It includes all amongst other things, collection, transport, treatment and disposal of waste together with monitoring and regulation. Waste can easily be converted into a reusable things by getting it recycled.

We as individuals should put in our efforts to work on waste management for the betterment of ourselves, our future generation and the overall economy. We all should understand that waste can be created by anything. It can be generated during the extraction of raw material, the processing of raw materials into intermediate and final products, the consumption of final products, or other human activities including municipal, agricultural, and social activities. And, waste management is intended to reduce adverse effects of waste on health and the environment.

To conclude my discussion, I would just like to tell you all that it is our responsibility to closely adhere each and every rule of government to control the waste and exercise waste management in an efficient way. Helping eliminate waste will add on to the environment’s health and prosperity. We as citizens of the country owe this responsibility of ensuring the proper execution of waste management.

Thank you!