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  2. Water heat recycling - Wikipedia

    en.wikipedia.org/wiki/Water_heat_recycling

    Installation of a double-walled copper-on-copper heat exchanger in a vertical section of the master drain line in a Canadian home (2007) Water heat recycling (also known as drain water heat recovery, waste water heat recovery, greywater heat recovery, [citation needed] or sometimes shower water heat recovery [citation needed]) is the use of a heat exchanger to recover energy and reuse heat ...

  3. Waste Management, Inc. - Wikipedia

    en.wikipedia.org/wiki/Waste_Management,_Inc.

    The company's network includes 337 transfer stations, 254 active landfill disposal sites, 97 recycling plants, 135 beneficial-use landfill gas projects and six independent power production plants. WM provides environmental services to nearly 21 million residential , industrial , municipal and commercial customers in the United States, Canada ...

  4. Republic Services - Wikipedia

    en.wikipedia.org/wiki/Republic_Services

    Republic Services, Inc. is a North American waste disposal company whose services include non-hazardous solid waste collection, waste transfer, waste disposal, recycling, and energy services. It is the second largest provider of waste disposal in the United States (as measured by revenue) after Waste Management .

  5. Allied Waste Industries - Wikipedia

    en.wikipedia.org/wiki/Allied_Waste_Industries

    Allied Waste Industries, Inc. was a Fortune 500 company headquartered in Phoenix, Arizona. A vertically integrated company that owned and operated solid waste collection businesses, recycling facilities, and landfills, it was a leader in the solid waste industry in the United States.

  6. Solid waste policy of the United States - Wikipedia

    en.wikipedia.org/wiki/Solid_waste_policy_of_the...

    Solid Waste Tree, Based on Resource Conservation and Recovery Act, United States Environmental Protection Agency. Solid waste means any garbage or refuse, sludge from a wastewater treatment plant, water supply treatment plant, or an air pollution control facility and other discarded material, including solid, liquid, semi-solid, or contained gaseous material resulting from industrial ...

  7. Francium - Wikipedia

    en.wikipedia.org/wiki/Francium

    Francium-223 is the most stable isotope, with a half-life of 21.8 minutes, [8] and it is highly unlikely that an isotope of francium with a longer half-life will ever be discovered or synthesized. [22] Francium-223 is a fifth product of the uranium-235 decay series as a daughter isotope of actinium-227; thorium-227 is the more common daughter. [23]

  8. Free disposal - Wikipedia

    en.wikipedia.org/wiki/Free_disposal

    For example, a fair division setting with free disposal is a setting where some resources have to be divided fairly, but some of the resources may be left undivided, discarded or donated. Examples of situations with free disposal are allocation of food, clothes jewels etc. Examples of situations without free disposal are:

  9. Francium compounds - Wikipedia

    en.wikipedia.org/wiki/Francium_compounds

    Francium nitrate, sulfate, hydroxide, carbonate, acetate, and oxalate are all soluble in water, while the iodate, picrate, tartrate, chloroplatinate, and silicotungstate are insoluble. The insoluble compounds are used to extract francium from other radioactive products, such as zirconium , niobium , molybdenum , tin , and antimony , using the ...

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