MANUFACTURING METHOD FOR PHOSPHORUS ADSORBENT AND PHOSPHORUS ADSORBENT

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method for a high density and high productive phosphorus adsorbent (a metal hydrate including a hydrotalcite-like compound), which efficiently removes phosphate ions in waste water, and to provide a phosphorus adsorbent.;SOLUTION: The manufacturing method for a phosphorus adsorbent, which is composed of a hydrate of a metal/iron-based hydroxide obtained by adding ferrous sulfate aqueous solution to a water dispersion of divalent metal oxide or hydroxide for maturing, includes (A) a step for adding ferrous sulfate aqueous solution to a water dispersion of the divalent metal oxide or hydroxide and extracting a ferrous hydroxide on the surface of the water dispersion, and (B) a step for maturing the ferrous hydroxide, wherein the molar ratio of the divalent metal to iron in the hydrate of the metal/iron-based hydroxide is 2:1 to 11:2. The phosphorus absorbent manufactured by the method is provided.;COPYRIGHT: (C)2013,JPO&INPIT