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96-417: Recycling is the process of converting waste materials into new materials and objects. This concept often includes the recovery of energy from waste materials . The recyclability of a material depends on its ability to reacquire the properties it had in its original state. It is an alternative to "conventional" waste disposal that can save material and help lower greenhouse gas emissions . It can also prevent
192-408: A materials recovery facility , the materials must be sorted. This is done in a series of stages, many of which involve automated processes, enabling a truckload of material to be fully sorted in less than an hour. Some plants can now sort materials automatically; this is known as single-stream recycling . Automatic sorting may be aided by robotics and machine learning. In plants, a variety of materials
288-428: A business or commercial occupancy. This can be restaurants, retail occupants, manufacturing occupants or similar businesses. Typically, commercial waste contains similar items such as food scraps, cardboard, paper, and shipping materials. Generally speaking, commercial waste creates more waste than household waste on a per location basis. The EPA defines this type of waste as "Construction and Demolition (C&D) debris
384-601: A certain amount of spending for recycled products; or "price preference" programs that provide larger budgets 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. The final government regulation toward increased demand
480-658: A combination of broken glassware, floor sweepings, non-repairable household goods, non-recyclable plastic and metal, clothing, and furnishings. Additionally, ashes, soot, and residential renovation waste materials are also included under this definition. This type of waste is typically generated from hospitals , physicians' offices, dental practices , blood banks , veterinary offices, and research facilities . This waste has often been contaminated with bodily fluids from humans or animals. Examples of this type of contamination can include blood , vomit , urine , and other bodily fluids. Concerns started to generate when medical waste
576-443: A common practice for most of human history with recorded advocates as far back as Plato in the fourth century BC. During periods when resources were scarce, archaeological studies of ancient waste dumps show less household waste (such as ash, broken tools, and pottery), implying that more waste was recycled in place of new material. However, archaeological artefacts made from recyclable material, such as glass or metal, may neither be
672-572: A form of recycling. Materials for recycling are either delivered to a household recycling center or picked up from curbside bins, then sorted, cleaned, and reprocessed into new materials for manufacturing new products. In ideal implementations, recycling a material produces a fresh supply of the same material—for example, used office paper would be converted into new office paper, and used polystyrene foam into new polystyrene. Some types of materials, such as metal cans , can be remanufactured repeatedly without losing their purity. With other materials, this
768-503: A growing market in the transboundary movement of waste, and although most waste that flows between countries goes between developed nations, a significant amount of waste is moved from developed to developing nations. The economic costs of managing waste are high, and are often paid for by municipal governments ; money can often be saved with more efficiently designed collection routes, modifying vehicles, and with public education. Environmental policies such as pay as you throw can reduce
864-776: A large percentage of munitions waste is generated by the government or governmental contractors, residents also throw away expired or faulty ammunition inside their household waste. Every year, the US generates this type of waste from both the commercial and consumer aspects. This waste is often generated from fireworks, signal flares and hobby rockets which have been damaged, failed to operate or for other reasons. Due to their chemical properties, these types of devices are extremely dangerous. While automobile airbag propellants are not as common as munitions and fireworks , they share similar properties which makes them extremely hazardous. Airbag propellants characteristics of reactivity and ignitability are
960-469: A more flexible option: Industries can meet their recycling targets at any point of their operations, or even contract out recycling in exchange for tradable credits. Opponents to these methods cite their large increase in reporting requirements, and claim that they rob the industry of flexibility. Governments have used their own purchasing power to increase recycling demand through "procurement policies". These policies are either "set-asides", which reserve
1056-521: A physical object, its generation is a physical and psychological process. The definitions used by various agencies are as below. According to the Basel Convention on the Control of Transboundary Movements of Hazardous Wastes and Their Disposal of 1989, Art. 2(1), " 'Wastes' are substance or objects, which are disposed of or are intended to be disposed of or are required to be disposed of by
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#17327905291281152-402: A positive effect on the supply of recyclates when it specifies how and where the product can be recycled. "Recyclate" is a raw material sent to and processed in a waste recycling plant or materials-recovery facility so it can be used in the production of new materials and products. For example, plastic bottles can be made into plastic pellets and synthetic fabrics . The quality of recyclates
1248-655: A profit. This sector can significantly alter or reduce waste in a particular system, but other negative economic effects come with the disease, poverty, exploitation, and abuse of its workers. People in developing countries suffer from contaminated water and landfills caused by unlawful government policies that allow first-world countries and companies to transport their trash to their homes and oftentimes near bodies of water. Those same governments do not use any waste trade profits to create ways to manage landfills or clean water sources. Photographer Kevin McElvaney documents
1344-478: A significant amount of greenhouse gases . When the burned waste contains metals, it can create toxic gases . On the other hand, when the waste contains plastics, the gases produce contain CO 2 . As global warming and CO 2 emissions increase, soil begins to become a larger carbon sink and will become increasingly valuable for plant life. Waste management is a significant environmental justice issue. Many of
1440-432: A stable supply. The post-processed material can then be sold. If profitable, this conserves the emission of greenhouse gases; if unprofitable, it increases their emission. Buy-back centres generally need government subsidies to be viable. According to a 1993 report by the U.S. National Waste & Recycling Association , it costs an average $ 50 to process a ton of material that can be resold for $ 30. Drop-off centers require
1536-505: A stop to the waste trade, the creation of wastewater treatment facilities, and providing a clean and accessible water source. The health of all these people in landfills and water are human necessities/rights that are being taken away. Waste management or waste disposal includes the processes and actions required to manage waste from its inception to its final disposal . This includes the collection , transport , treatment , and disposal of waste, together with monitoring and regulation of
1632-558: A turnover of €24 billion. EU countries are mandated to reach recycling rates of at least 50%; leading countries are already at around 65%. The overall EU average was 39% in 2013 and is rising steadily, to 45% in 2015. In 2015, the United Nations General Assembly set 17 Sustainable Development Goals . Goal 12, Responsible Consumption and Production , specifies 11 targets "to ensure sustainable consumption and production patterns". The fifth target, Target 12.5 ,
1728-399: A waste product's value above zero. Examples include municipal solid waste (household trash/refuse), hazardous waste , wastewater (such as sewage , which contains bodily wastes ( feces and urine ) and surface runoff ), radioactive waste , and others. What constitutes waste depends on the eye of the beholder; one person's waste can be a resource for another person. Though waste is
1824-625: Is a type of waste that is not included in municipal solid waste (MSW)." Items typically found in C&;D include but are not limited to steel, wood products, drywall and plaster, brick and clay tile, asphalt shingles, concrete, and asphalt. Generally speaking, construction and demolition waste can be categorized as any components needed to build infrastructures. In 2018, the EPA estimated that the US generated approximately 600 million tons of C&D waste . The waste generated by construction and demolition
1920-498: Is commonly referred to as the Military Munitions Rule. The EPA defines military munitions as "all types of both conventional and chemical ammunition products and their components, produced by or for the military for national defense and security (including munitions produced by other parties under contract to or acting as an agent for DOD—in the case of Government Owned/Contractor Operated [GOCO] operations)." While
2016-484: Is defined as substantially reducing waste generation by 2030, indicated by the National Recycling Rate. In 2018, changes in the recycling industry have sparked a global "crisis". On 31 December 2017, China announced its " National Sword " policy, setting new standards for imports of recyclable material and banning materials deemed too "dirty" or "hazardous". The new policy caused drastic disruptions in
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#17327905291282112-500: Is extremely important to understand the necessary protocols and follow the correct precautions. Failure to handle and recycle these materials can have catastrophic consequences and potentially damage the site's ecosystems for years to come. Radioactive waste is monitored and regulated by multiple governmental agencies such as Nuclear Regulatory Commission (NRC), Department of Energy (DOE), Environmental Protection Agency (EPA), Department of Transportation (DOT), and Department of
2208-413: Is generated from nuclear reactors or reprocessing spent nuclear fuel. Transuranic Waste : This type of radioactive waste is man-made and has an atomic number of 92 or higher. Uranium or thorium mill tailings: This type of radioactive waste is a result after the mining or milling or uranium or thorium ore. Low-level waste : This type of radioactive waste is radioactively contaminated waste. It
2304-618: Is helping increase slag utilization, hence reducing wastage and pollution. Economist Steven Landsburg , author of a paper entitled "Why I Am Not an Environmentalist", claimed that paper recycling actually reduces tree populations. He argues that because paper companies have incentives to replenish their forests, large demands for paper lead to large forests while reduced demand for paper leads to fewer "farmed" forests. When foresting companies cut down trees, more are planted in their place; however, such farmed forests are inferior to natural forests in several ways. Farmed forests are not able to fix
2400-443: Is likely to be recycled, so higher amounts of non-target and non-recyclable materials can reduce the quantity of recycled products. A high proportion of non-target and non-recyclable material can make it more difficult to achieve "high-quality" recycling; and if 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 . For example, to facilitate
2496-587: Is often difficult or too expensive (compared with producing the same product from raw materials or other sources), so "recycling" of many products and materials involves their reuse in producing different materials (for example, paperboard ). Another form of recycling is the salvage of constituent materials from complex products, due to either their intrinsic value (such as lead from car batteries and gold from printed circuit boards ), or their hazardous nature (e.g. removal and reuse of mercury from thermometers and thermostats ). Reusing materials has been
2592-518: Is often intended to be reused or is sent to the landfill. Examples of reused waste is milled asphalt can be used again for the asphalt mixture or fill dirt can be used to level grade. The EPA defines hazardous waste as "a waste with properties that make it dangerous or capable of having a harmful effect on human health or the environment." Hazardous Waste falls under the Resource Conservation and Recovery Act (RCRA) . Under
2688-418: Is one of the principal challenges for the success of a long-term vision of a green economy and achieving zero waste . It generally refers to how much of it is composed of target material, versus non-target material and other non-recyclable material. Steel and other metals have intrinsically higher recyclate quality; it is estimated that two-thirds of all new steel comes from recycled steel. Only target material
2784-416: Is produced by various industries such as nuclear power plants , nuclear reactors , hospitals, research centers, and mining facilities. Any activity that involves radioactive material can generate radioactive waste. Furthermore, such waste emits radioactive particles, which if not handled correctly, can be both an environmental hazard as well as a human health hazard. When dealing with radioactive waste, it
2880-545: Is rarely harvested for paper because of their heterogeneity. According to the United Nations Framework Convention on Climate Change secretariat, the overwhelming direct cause of deforestation is subsistence farming (48% of deforestation) and commercial agriculture (32%), which is linked to food, not paper production. Other non-conventional methods of material recycling, like Waste-to-Energy (WTE) systems, have garnered increased attention in
2976-431: Is recycled product labeling. When producers are required to label their packaging with the amount of recycled material it contains (including the packaging), consumers can make more educated choices. Consumers with sufficient buying power can choose more environmentally conscious options, prompting producers to increase the recycled material in their products and increase demand. Standardized recycling labeling can also have
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3072-672: Is regarded as waste. Environmental impact of slag include copper paralysis , which leads to death due to gastric hemorrhage, if ingested by humans. It may also cause acute dermatitis upon skin exposure. Toxicity may also be uptaken by crops through soil, consequently spreading animals and food sources and increasing the risk of cardiovascular diseases, cancer, cognitive impairment, chronic anemia, and damage to kidneys, bones, nervous system, brain and skin. Substituting gravel and grit in quarries has been more cost-effective, due to having its sources with better proximity to consumer markets. Trading between countries and establishment of blast furnaces
3168-600: Is sorted including paper, different types of plastics, glass, metals, food scraps, and most types of batteries . A 30% increase in recycling rates has been seen in areas with these plants. In the US, there are over 300 materials recovery facilities. Initially, 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. Next, automated machinery such as disk screens and air classifiers separate
3264-576: Is the other extreme, where each material is cleaned and sorted prior to collection. It requires the least post-collection sorting and produces the purest recyclates. However, it incurs additional operating costs for collecting each material, and requires extensive public education to avoid recyclate contamination . In Oregon , USA, Oregon DEQ surveyed multi-family property managers; about half of them reported problems, including contamination of recyclables due to trespassers such as transients gaining access to collection areas. Source separation used to be
3360-450: Is treated using inferior activities, it can release as many as 1000 different chemical substances ... including harmful neurotoxicants such as lead .” A paper in the journal Sustainable Materials & Technologies remarks upon the difficulty of managing e-waste, particularly from home automation products, which, due to their becoming obsolete at a high rate, are putting increasing strain on recycling systems, which have not adapted to meet
3456-489: Is typically generated from industrial processes or research. Examples of these items include paper, protective clothing, bags, and cardboard. Technologically enhanced naturally-occurring radioactive material (TENORM): This type of radioactive waste is created through human activity such as mining, oil and gas drilling, and water treatment where naturally-occurring radiological material (NORM) becomes concentrated. The EPA defines energetic hazardous waste as "wastes that have
3552-403: Is wet, and plastic or glass bottles can have different weights but be the same size. On a global scale it is difficult to report waste because countries have different definitions of waste and what falls into waste categories, as well as different ways of reporting. Based on incomplete reports from its parties, the Basel Convention estimated 338 million tonnes of waste was generated in 2001. For
3648-592: The RCRA , the EPA has the authority to control hazardous waste during its entire lifecycle. This means from the point of creation to the point where it has been properly disposed of. The life cycle of hazardous waste includes generation, transportation, treatment, and storage and disposal. All of which are included in the RCRA. Some forms of hazardous waste include radioactive waste , explosive waste, and electronic waste . Radioactive waste, often referred to as nuclear waste ,
3744-616: The 1970s due to rising energy costs. Recycling aluminium uses only 5% of the energy of virgin production. Glass, paper and other metals have less dramatic but significant energy savings when recycled. Although consumer electronics have been popular since the 1920s, recycling them was almost unheard of until early 1991. The first electronic waste recycling scheme was implemented in Switzerland , beginning with collection of old refrigerators, then expanding to cover all devices. When these programs were created, many countries could not deal with
3840-834: The Interagency Task Force on Electronics Stewardship in November 2010. The overall goal for this task was to develop a national strategy for handling and proper disposal of electronic waste. The task force would work with the White House Council on Environmental Quality (CEQ), EPA, and the US General Services Administration (GSA). The task force released its final product, the National Strategy for Electronics Stewardship report . The report focuses on four goals of
3936-801: The Interior (DOI). Each agency plays an important role in creating, handling, and properly disposing of radioactive waste. A brief description of each agency's role can be found below. NRC: "Licenses and regulates the receipt and possession of high-level waste at privately owned facilities and at certain DOE facilities." DOE: "Plans and carries out programs for sand handling of DOE-generated radioactive wastes, develops waste disposal technologies, and will design, construct and operate disposal facilities for DOE-generated and commercial high-level wastes." EPA: "Develops environmental standards and federal radiation protection guidance for offsite radiation due to
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4032-457: The United States. The EPA has estimated that approximately 10.1 million tons of plastic containers and packaging ended up landfills in 2018. The EPA noted that only 30.5% of plastic containers and packaging was recycled or combusted as an energy source. Additionally, approximately 940,000 pounds of cardboard ends up in the landfill each year. Commercial waste is very similar to household waste. To be considered as commercial waste, it must come from
4128-631: The Waste Directive, see the European Commission's summary . Metabolic wastes or excrements are substances left over from metabolic processes (such as cellular respiration ) which cannot be used by the organism (they are surplus or toxic ), and must therefore be excreted . This includes nitrogen compounds, water , CO 2 , phosphates , sulphates , etc. Animals treat these compounds as excretes. Plants have metabolic pathways which transforms some of them (primarily
4224-585: The airbag waste collection facility is not exempt. Once the airbags have met the collection center, it will then be classified as RCRA hazardous waste and must be disposed or recycled at a RCRA disposal facility. Electronic waste , often referred to as "E-Waste" or "E-Scrap," are often thrown away or sent to a recycler. E-Waste continues to end up in landfills across the world. The EPA estimates that in 2009, 2.37 million tons of televisions, computers, cell phones, printers, scanners, and fax machines were discarded by US consumers. Only 25% of these devices were recycled;
4320-453: The cans that is repulsed by a large magnetic field , ejecting the cans from the stream. Waste Waste (or wastes ) are unwanted or unusable materials. Waste is any substance discarded after primary use, or is worthless, defective and of no use. A by-product , by contrast is a joint product of relatively minor economic value . A waste product may become a by-product, joint product or resource through an invention that raises
4416-658: The characteristics which qualify for hazardous waste. When disposed undeployed, leaves these two hazardous characteristics intact. To properly dispose of these items, they must be safely deployed which removes these hazardous characteristics. The EPA includes the waste of automobile airbag propellants under the RCRA. In 2018, the EPA issued a final rule on handling of automobile airbag propellants. The " interim final rule "provides an exemption of entities which install and remove airbags. This includes automobile dealerships, salvage yards, automobile repair facilities and collision centers. The handler and transporter are exempt from RCRA, but
4512-489: The compaction of materials can also make this more difficult. Despite improvements in technology and quality of recyclate, sorting facilities are still not 100% effective in separating materials. When materials are stored outside, where they can become wet, can also cause problems for re-processors. Further sorting steps may be required to satisfactorily reduce the amount of non-target and non-recyclable material. A number of systems have been implemented to collect recyclates from
4608-584: The container is returned to a collection point. These programs have succeeded in creating an average 80% recycling rate. Despite such good results, the shift in collection costs from local government to industry and consumers has created strong opposition in some areas—for example, where manufacturers bear the responsibility for recycling their products. In the European Union, the WEEE Directive requires producers of consumer electronics to reimburse
4704-672: The cost of management and reduce waste quantities. Waste recovery (that is, recycling , reuse ) can curb economic costs because it avoids extracting raw materials and often cuts transportation costs. "Economic assessment of municipal waste management systems – case studies using a combination of life-cycle assessment (LCA) and life-cycle costing (LCC)". The location of waste treatment and disposal facilities often reduces property values due to noise, dust, pollution, unsightliness, and negative stigma. The informal waste sector consists mostly of waste pickers who scavenge for metals, glass, plastic, textiles, and other materials and then trade them for
4800-501: The crisis. According to the WHO (2023), “Every year millions of electrical and electronic devices are discarded ... a threat to the environment and to human health if they are not treated, disposed of, and recycled appropriately. Common items ... include computers ... e-waste are recycled using environmentally unsound techniques and are likely stored in homes and warehouses, dumped, exported or recycled under inferior conditions. When e-waste
4896-416: The demand for recycled materials: minimum recycled content mandates, utilization rates, procurement policies, and recycled product labeling . Both minimum recycled content mandates and utilization rates increase demand 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
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#17327905291284992-539: The disposal of spent nuclear fuel and high-level and transuranic radioactive wastes." DOT: "Regulates both the packaging and carriage of all hazardous materials including radioactive waste." DOI: "Through the U.S. Geological Survey, conducts laboratory and field geologic investigations in support of DOE's waste disposal programs and collaborates with DOE on earth science technical activities." The US currently defines five types of radioactive waste, as shown below. High-level Waste : This type of radioactive waste
5088-407: The dumpsite. There are piles of waste used as makeshift bridges over lakes, with metals and chemicals just seeping into the water and groundwater that could be linked to homes' water systems. The same unfortunate situation and dumps/landfills can be seen in similar countries that are considered the third world, such as other West African countries and China . Many are advocating for waste management,
5184-580: The early 19th century to at least 1914. Industrialization spurred demand for affordable materials. In addition to rags, ferrous scrap metals were coveted as they were cheaper to acquire than virgin ore. Railroads 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
5280-455: The earth. It requires energy to operate the equipment to mine these metals, which emits greenhouse gases into the atmosphere. Donating e-waste to recycling centers or refurbishing this equipment can reduce the greenhouse gases emitted through the mining process as well as decrease the use of natural resources to ensure future generations will have sufficient access to these resources. As this issue continued to grow, President Obama established
5376-435: The economic system. There are some ISO standards related to recycling, such as ISO 15270:2008 for plastics waste and ISO 14001 :2015 for environmental management control of recycling practice. Recyclable materials include many kinds of glass, paper, cardboard, metal, plastic, tires , textiles , batteries, and electronics . The composting and other reuse of biodegradable waste —such as food and garden waste —is also
5472-404: The environmental burdens cited above are more often borne by marginalized groups, such as racial minorities, women, and residents of developing nations. NIMBY (not in my back yard) is the opposition of residents to a proposal for a new development because it is close to them. However, the need for expansion and siting of waste treatment and disposal facilities is increasing worldwide. There is now
5568-466: The federal government's plan to enhance the management of electronics: 1. Incentivizing greener design of electronics 2. Leading by example 3. Increasing domestic recycling 4. Reducing harmful exports of e-waste and building capacity in developing countries. E-Waste is not only a problem in the US, but also a global issue. Tackling this issue requires collaboration from multiple agencies across
5664-402: 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 responsible for working to meet this target. Container deposit legislation mandates refunds 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 that the consumer can reclaim when
5760-421: The general waste stream, occupying different places on 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. About two-thirds of the cost of recycling is incurred in the collection phase. Curbside collection encompasses many subtly different systems, which differ mostly on where in
5856-571: The global recycling market, and reduced the prices of scrap plastic and low-grade paper. Exports of recyclable materials from G7 countries to China dropped dramatically, with many shifting to countries in southeast Asia. This generated significant concern about the recycling industry's practices and environmental sustainability . The abrupt shift caused countries to accept more materials than they could process, and raised fundamental questions about shipping waste from developed countries to countries with few environmental regulations—a practice that predated
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#17327905291285952-454: The goals desired." Recycling—or "salvage", as it was then usually known—was a major issue for governments during World War II , where financial constraints and significant material shortages made it necessary to reuse goods and recycle materials. These resource shortages caused by the world wars , and other such world-changing events, greatly encouraged recycling. It became necessary for most homes to recycle their waste, allowing people to make
6048-422: The infectious waste was incinerated before 1997. Due to the potential of negatively affect air quality, alternative treatment and disposal technologies for medical waste was developed. These new alternatives include: There are many issues that surround reporting waste. It is most commonly measured by size or weight, and there is a stark difference between the two. For example, organic waste is much heavier when it
6144-425: The items that are collected by municipalities end up in landfills across the world. In the United States, it is estimated that 11.3 million tons of textile waste is generated. On an individual level, it is estimated that the average American throws away 81.5 pounds of clothes each year. As online shopping becomes more prevalent, items such as cardboard, bubble wrap, shipping envelopes are ending up in landfills across
6240-504: The late 19th century both invented new materials (e.g. Bakelite in 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 Arthur 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
6336-492: The management of mixed waste is regulated by the EPA and RCRA and Atomic Energy Act . The hazardous materials content is regulated by RCRA while the radiological component is regulated by the Department of Energy (DOE) and Nuclear Regulatory Commission (NRC). Mixed waste can also be defined as a type of waste which includes recyclable materials and organic materials. Some examples of mixed waste in this context include
6432-619: The most of what was available. Recycling household materials also meant more resources were left available for war efforts. Massive government campaigns, such as the National Salvage Campaign in Britain and the Salvage for Victory campaign in the United States, occurred in every fighting nation, urging citizens to donate metal, paper, rags, and rubber as a patriotic duty. A considerable investment in recycling occurred in
6528-520: The original object nor resemble it, with the consequence that a successful ancient recycling economy can become invisible when recycling is synonymous with re-melting rather than reuse. In pre-industrial times, there is evidence of scrap bronze and other metals being collected in Europe and melted down for continuous reuse. Paper recycling was first recorded in 1031 when Japanese shops sold repulped paper. In Britain dust and ash from wood and coal fires
6624-428: The oxygen compounds) into useful substances. The Organization for Economic Co-operation and Development also known as OECD defines municipal solid waste (MSW) as "waste collected and treated by or for municipalities". Typically this type of waste includes household waste , commercial waste , and demolition or construction waste. In 2018, the Environmental Protection Agency concluded that 292.4 tons of municipal waste
6720-410: The potential to detonate and bulk military propellants which cannot safely be disposed of through other modes of treatments." The items which typically fall under this category include munitions , fireworks, flares, hobby rockets, and automobile propellants. Munitions were added to hazardous waste in 1997 when the EPA finalized RCRA. A special rule was added to address munitions in waste. This new rule
6816-406: The preferred method due to the high cost of sorting commingled (mixed waste) collection. However, advances in sorting technology have substantially lowered this overhead, and many areas that had developed source separation programs have switched to what is called co-mingled collection . At buy-back centers, separated, cleaned recyclates are purchased, providing a clear incentive for use and creating
6912-531: The process the recyclates are sorted and cleaned. The main categories are mixed waste collection, commingled recyclables, and source separation. A waste collection vehicle generally picks up the waste. In mixed waste collection, recyclates are collected mixed with the rest of the waste, and the desired materials are sorted out and cleaned at a central sorting facility. This results in a large amount of recyclable waste (especially paper) being too soiled to reprocess, but has advantages as well: The city need not pay for
7008-562: The processing of raw materials into intermediate and final products, the consumption of final products, and other human activities. Residuals recycled or reused at the place of generation are excluded." Under the Waste Framework Directive 2008/98/EC , Art. 3(1), the European Union defines waste as "an object the holder discards, intends to discard or is required to discard." For a more structural description of
7104-570: The properties of recycled waste plastic and sand bricks. The composite pavers can be sold at 100% profit while employing workers at 1.5× the minimum wage in the West African region, where distributed recycling has the potential to produce 19 million pavement tiles from 28,000 tons of plastic water sachets annually in Ghana , Nigeria , and Liberia . This has also been done with COVID19 masks. Once commingled recyclates are collected and delivered to
7200-416: The provisions of national law". The UNSD Glossary of Environment Statistics describes waste as "materials that are not prime products (that is, products produced for the market) for which the generator has no further use in terms of his/her own purposes of production, transformation or consumption , and of which he/she wants to dispose. Wastes may be generated during the extraction of raw materials ,
7296-400: The quality of final recyclate streams, and require extra efforts to discard those materials at later stages in the recycling process. Different collection systems can induce different levels of contamination. When multiple materials are collected together, extra effort is required to sort them into separate streams and can significantly reduce the quality of the final products. Transportation and
7392-568: The recent past due to the polarizing nature of their emissions. While viewed as a sustainable method of capturing energy from material waste feedstocks by many, others have cited numerous explanations for why the technology has not been scaled globally. For a recycling program to work, a large, stable supply of recyclable material is crucial. Three legislative options have been used to create such supplies: mandatory recycling collection, container deposit legislation , and refuse bans. Mandatory collection laws set recycling targets for cities, usually in
7488-895: The recyclates by weight, splitting lighter paper and plastic from heavier glass and metal. Cardboard is removed from mixed paper, and the most common types of plastic— PET (#1) and HDPE (#2)—are collected, so these materials can be diverted into the proper collection channels. This is usually done by hand; but in some sorting centers, spectroscopic scanners are used to differentiate between types of paper and plastic based on their absorbed wavelengths. Plastics tend to be incompatible with each other due to differences in chemical composition ; their polymer molecules repel each other, similar to oil and water. 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 : A rotating magnetic field induces an electric current around aluminum cans, creating an eddy current inside
7584-483: The recyclers' costs. An alternative way to increase the supply of recyclates is to ban the disposal of certain materials as waste, often including used oil , old batteries, tires , and garden waste. This can create a viable economy for the proper disposal of the products. Care must be taken that enough recycling services exist to meet the supply, or such bans can create increased illegal dumping . Four forms of legislation have also been used to increase and maintain
7680-407: The recycling needs posed by this type of product. Copper slag is obtained when copper and nickel ores are recovered from their source ores using a pyrometallurgical process, and these ores usually contain other elements which include iron, cobalt, silica, and alumina. An estimate of 2.2–3 tons of copper slag is generated per ton of copper produced, resulting in around 24.6 tons of slag per year, which
7776-526: The recycling process. The 2000s saw a boom in both the sales 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. This spurred investment in modern automated facilities to cope with the influx, especially after strict laws were implemented in 2003. As of 2014, the European Union had about 50% of world share of waste and recycling industries, with over 60,000 companies employing 500,000 people and
7872-434: The remainder ended up in landfills across the US. E-Waste contains many elements that can be recycled or re-used. Typically speaking, electronics are encased in a plastic or light metal enclosure. Items such as computer boards, wiring, capacitors , and small motor items are common types of E-waste. Of these items, the internal components include iron , gold , palladium , platinum , and copper , all of which are mined from
7968-585: The remanufacturing of clear glass products, there are tight restrictions for colored glass entering the re-melt process. Another example is the downcycling of plastic, where products such as plastic food packaging are often downcycled into lower quality products, and do not get recycled into the same plastic food packaging. 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 . High-quality recycling can support economic growth by maximizing
8064-817: The same year, OECD estimated 4 billion tonnes from its member countries. Despite these inconsistencies, waste reporting is still useful on a small and large scale to determine key causes and locations, and to find ways of preventing, minimizing, recovering, treating, and disposing of waste. Inappropriately managed waste can attract rodents and insects , which can harbor gastrointestinal parasites, yellow fever , worms, various diseases, and other conditions for humans, and exposure to hazardous wastes, particularly when they are burned, can cause various other diseases including cancers. Toxic waste materials can contaminate surface water, groundwater, soil, and air, which causes more problems for humans, other species, and ecosystems . A form of waste disposal involving combustion creates
8160-425: The separate collection of recyclates, no public education is needed, and any changes to the recyclability of certain materials are implemented where sorting occurs. In a commingled or single-stream system , recyclables are mixed but kept separate from non-recyclable waste. This greatly reduces the need for post-collection cleaning, but requires public education on what materials are recyclable. Source separation
8256-545: The sheer quantity of e-waste , or its hazardous nature, and began to export the problem to developing countries without enforced environmental legislation. (For example, recycling computer monitors in the United States costs 10 times more than in China.) Demand for electronic waste in Asia began to grow when scrapyards found they could extract valuable substances such as copper , silver , iron , silicon , nickel , and gold during
8352-485: The soil as quickly as natural forests. This can cause widespread soil erosion and often requiring large amounts of fertilizer to maintain the soil, while containing little tree and wild-life biodiversity compared to virgin forests. Also, the new trees planted are not as big as the trees that were cut down, and the argument that there would be "more trees" is not compelling to forestry advocates when they are counting saplings. In particular, wood from tropical rainforests
8448-675: The streets of American cities, taking advantage of market forces to recycle post-consumer materials into industrial production. Manufacturers of beverage bottles, including Schweppes , began offering refundable recycling deposits in Great Britain and Ireland around 1800. An official recycling system with refundable deposits for bottles was established in Sweden in 1884, and for aluminum beverage cans in 1982; it led to recycling rates of 84–99%, depending on type (glass bottles can be refilled around 20 times). New chemical industries created in
8544-528: The value of waste material. Higher income levels from the sale of quality recyclates can return value significant to local governments, households and businesses. Pursuing high-quality recycling can also promote consumer and business confidence in the waste and resource management sector, and may encourage investment in it. There are many actions along the recycling supply chain, each of which can affect recyclate quality. Waste producers who place non-target and non-recyclable wastes in recycling collections can affect
8640-444: The waste of potentially useful materials and reduce the consumption of fresh raw materials, reducing energy use, 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 . It promotes environmental sustainability by removing raw material input and redirecting waste output in
8736-888: The waste producer to carry 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. For some waste materials such as plastic, recent technical devices called recyclebots enable a form of distributed recycling called DRAM ( distributed recycling additive manufacturing ). Preliminary life-cycle analysis (LCA) indicates that such distributed recycling of HDPE to make filament for 3D printers in rural regions consumes less energy than using virgin resin, or using conventional recycling processes with their associated transportation. Another form of distributed recycling mixes waste plastic with sand to make bricks in Africa . Several studies have looked at
8832-643: The world's biggest e-waste dump called Agbogbloshie in Accra, Ghana , which used to be a wetland . The young men and children that work in Agbogbloshie smash devices to get to the metals, obtain burns, eye damage, lung and back problems, chronic nausea, debilitating headaches, and respiratory problems and most workers die from cancer in their 20s (McElvaney). In McElvaney's photos, kids in fields burning refrigerators and computers with blackened hands and trashed clothes and animals, such as cows with open wounds, in
8928-569: The world. Some agencies involved in this include U.S. EPA, Taiwan Environmental Protection Administration (Taiwan EPA), International E-Waste Management Network (IEMN), and environmental offices from Asia , Latin America , the Caribbean , Africa , and North America . Mixed waste is a term that has different definitions based on its context. Most commonly, mixed waste refers to hazardous waste which contains radioactive material. In this context,
9024-594: Was appearing on east coast beaches in the 1980s. This forced congress to pass the Medical Waste Tracking Act . This act was only in effect for approximately 3 years after the EPA concluded the "disease-causing medical waste was greatest at the point of generation and naturally tapers off after that point." Prior to the Hospital Medical Infectious Waste Incinerator (HMIWI) standard, approximately 90% of
9120-636: Was collected by " dustmen " and downcycled as a base material for brick making. These forms of recycling were driven by the economic advantage of obtaining recycled materials instead of virgin material, and the need for waste removal in ever-more-densely populated areas. In 1813, Benjamin Law developed the process of turning rags into " shoddy " and " mungo " wool in Batley, Yorkshire, which combined recycled fibers with virgin wool . The West Yorkshire shoddy industry in towns such as Batley and Dewsbury lasted from
9216-448: Was generated which equated to about 4.9 pounds per day per person. Out of the 292.4 tons, approximately 69 million tons were recycled, and 25 million tons were composted. Household waste more commonly known as trash or garbage are items that are typically thrown away daily from ordinary households. Items often included in this category include product packaging, yard waste , clothing, food scraps, appliance, paints, and batteries. Most of
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