ADSORBATES AND METHODS FOR SEPARATION AND RECOVERY OF PHOSPHATE, NITRATES, AND AMMONIA FROM WATER
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United States of America
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Jan 23, 2020
app pub date -
Jul 17, 2019
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Jul 17, 2019
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Water insoluble carbonates are utilized as adsorbents to remove phosphates from water flowing through an iron impregnated or coated foam. The iron impregnated or coated foam acts to improve the removal of phosphates as well as to remove nitrates and ammonia. A powdered carbonates/binder mixture, i.e. MgCO3 and/or La2(CO3)3 mixed with cellulose, is formed into pellets then calcined. Aqueous phosphates adsorb onto the surface area of the pellet for eventual removal. Calcining the pellets removes the cellulose binder and opens the interior of the pellet up to provide additional surface area for adsorption. These pellets are placed within a porous bag and placed with water, preferably within a flow of water.
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