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  2. Reuse - Wikipedia

    en.wikipedia.org/wiki/Reuse

    One way to address this is to increase product longevity; either by extending a product's first life or addressing issues of repair, reuse and recycling. [2] Reusing products, and therefore extending the use of that item beyond the point where it is discarded by its first user is preferable to recycling or disposal, [3] as this is the least energy intensive solution, although it is often ...

  3. 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.

  4. Waste valorization - Wikipedia

    en.wikipedia.org/wiki/Waste_valorization

    Waste valorization, beneficial reuse, beneficial use, value recovery or waste reclamation [1] is the process of waste products or residues from an economic process being valorized (given economic value), by reuse or recycling in order to create economically useful materials.

  5. Biogeochemical cycle - Wikipedia

    en.wikipedia.org/wiki/Biogeochemical_cycle

    Geologic processes, such as weathering, erosion, water drainage, and the subduction of the continental plates, all play a role in this recycling of materials. Because geology and chemistry have major roles in the study of this process, the recycling of inorganic matter between living organisms and their environment is called a biogeochemical cycle.

  6. Environmental issues - Wikipedia

    en.wikipedia.org/wiki/Environmental_issues

    Environmental issues are disruptions in the usual function of ecosystems. [1] Further, these issues can be caused by humans (human impact on the environment) [2] or they can be natural. These issues are considered serious when the ecosystem cannot recover in the present situation, and catastrophic if the ecosystem is projected to certainly ...

  7. Closed-loop recycling - Wikipedia

    en.wikipedia.org/wiki/Closed-loop_recycling

    By reducing the production and use of raw materials, closed-loop recycling minimizes harm to the environment and discourages resource depletion. [5] In contrast, open-loop recycling is the process by which a product is recycled but has to be mixed with raw materials to become a new product, typically leading to downcycling. [1]

  8. Nutrient cycle - Wikipedia

    en.wikipedia.org/wiki/Nutrient_cycle

    The term ecological recycling appears in a 1968 publication on future applications of ecology for the creation of different modules designed for living in extreme environments, such as space or under the sea: "For our basic requirement of recycling vital resources, the oceans provide much more frequent ecological recycling than the land area ...

  9. Zero waste - Wikipedia

    en.wikipedia.org/wiki/Zero_waste

    Recycling has been separated from the concept of zero waste. One example of this is the computer industry where worldwide millions of PC's are disposed of as electronic waste each year in 2016 44.7 million metric tons [ 24 ] of electronic waste was generated of which only 20% was documented and recycled.

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