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Waste comes in many different forms and may be categorized in a variety of ways. The types listed here are not necessarily exclusive and there may be considerable overlap so that one waste entity may fall into one to many types.
Waste can be hazardous because it is toxic, reacts violently with other chemicals, or is corrosive, among other traits. [1] As of 2022, humanity produces 300-500 million metric tons of hazardous waste annually. [2] Some common examples are electronics, batteries, and paints. An important aspect of managing hazardous waste is safe disposal.
Biodegradable waste includes any organic matter in waste which can be broken down into carbon dioxide, water, methane, compost, humus, and simple organic molecules by micro-organisms and other living things by composting, aerobic digestion, anaerobic digestion or similar processes.
Nitric oxide is an example of a P-list waste and carries the number P076. U-Listed wastes are considered "hazardous" when discarded and are regulated in a somewhat less stringent manner than P-Listed wastes. Acetone is an example of a U-Listed waste and carries the number U002. [9]
The composition of municipal solid waste varies greatly from municipality to municipality, [1] and it changes significantly with time. In municipalities which have a well-developed waste recycling system, the waste stream mainly consists of intractable wastes such as plastic film and non-recyclable packaging materials.
Industrial waste may pollute the nearby soil or adjacent water bodies, and can contaminate groundwater, lakes, streams, rivers or coastal waters. [1] Industrial waste is often mixed into municipal waste, making accurate assessments difficult. An estimate for the US goes as high as 7.6 billion tons of industrial waste produced annually, as of 2017.
Examples of works that feature toxic waste in such a manner include the films Mutant, [25] C.H.U.D., [25] Impulse (all 1984), [25] and Teenage Mutant Ninja Turtles (1990). [ 26 ] [ 27 ] Several films produced by Troma Entertainment involve mutation via toxic or radioactive waste , including The Toxic Avenger (1984) and Class of Nuke 'Em High ...
Brown waste is any biodegradable waste that is predominantly carbon based. The term includes such items as grass cuttings, dry leaves, twigs, hay, paper, sawdust, corn cobs, used livestock bedding, manure, animal waste, cardboard, pine needles or cones, etc. [1] Carbon is necessary for composting, which uses a combination of green waste and brown waste to promote the microbial processes ...