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  2. Recycling - Wikipedia

    en.wikipedia.org/wiki/Recycling

    This is an accepted version of this page This is the latest accepted revision, reviewed on 6 January 2025. Converting waste materials into new products This article is about recycling of waste materials. For recycling of waste energy, see Energy recycling. "Recycled" redirects here. For the album, see Recycled (Nektar album). The three chasing arrows of the universal recycling symbol Municipal ...

  3. Recycling by material - Wikipedia

    en.wikipedia.org/wiki/Recycling_by_material

    Recycling can be carried out on various raw materials. Recycling is an important part of creating more sustainable economies, reducing the cost and environmental impact of raw materials. Not all materials are easily recycled, and processing recyclable into the correct waste stream requires considerable energy.

  4. Nutrient cycle - Wikipedia

    en.wikipedia.org/wiki/Nutrient_cycle

    The term bio-recycling appears in a 1976 paper on the recycling of organic carbon in oceans: "Following the actualistic assumption, then, that biological activity is responsible for the source of dissolved organic material in the oceans, but is not important for its activities after death of the organisms and subsequent chemical changes which ...

  5. Recycling in the United States - Wikipedia

    en.wikipedia.org/wiki/Recycling_in_the_United_States

    Recycling materials waiting to be barged away on the Chicago River Trash and recycle bin at George Bush Intercontinental Airport. Recycling statistics (ca. 2014) [16] with similar numbers as of 2015 [17] An average of approximately 258 million tons of trash is generated by the United States in 2014 34.6% was recycled; 12.8% was combusted for ...

  6. Waste management - Wikipedia

    en.wikipedia.org/wiki/Waste_management

    Recycling point at the GdaƄsk University of Technology. This is the separation of wet waste and dry waste. The purpose is to recycle dry waste easily and to use wet waste as compost. When segregating waste, the amount of waste that gets landfilled reduces considerably, resulting in lower levels of air and water pollution.

  7. Waste hierarchy - Wikipedia

    en.wikipedia.org/wiki/Waste_hierarchy

    All products and services have environmental impacts, from the extraction of raw materials for production to manufacture, distribution, use and disposal. Following the waste hierarchy will generally lead to the most resource-efficient and environmentally sound choice but in some cases refining decisions within the hierarchy or departing from it can lead to better environmental outcomes.

  8. Biogeochemical cycle - Wikipedia

    en.wikipedia.org/wiki/Biogeochemical_cycle

    However, the matter that makes up living organisms is conserved and recycled. The six most common elements associated with organic molecules — carbon, nitrogen, hydrogen, oxygen, phosphorus, and sulfur — take a variety of chemical forms and may exist for long periods in the atmosphere, on land, in water, or beneath the Earth's surface.

  9. Resource recovery - Wikipedia

    en.wikipedia.org/wiki/Resource_recovery

    Resource recovery can be enabled by changes in government policy and regulation, circular economy infrastructure such as improved 'binfrastructure' to promote source separation and waste collection, reuse and recycling, [5] innovative circular business models, [6] and valuing materials and products in terms of their economic but also their social and environmental costs and benefits. [7]