US 2010/0072140 A1 · WATER PURIFICATION MATERIAL AND WATER PURIFICATION METHOD EMPLOYING THE SAME

Abstract

The present invention provides a water purification material capable of selectively adsorbing phosphorus dissolved in wastewater, and also provides a water purification method employing the material. The water purification material comprises a composite metal hydroxide containing iron ions and calcium ions in its structure, and this composite metal hydroxide has a layered structure. In the water purification method of the present invention, the water purification material is brought into contact with wastewater so as to remove and recover phosphate ions in the wastewater.

Claims6

Dependent claims

A water purification material comprising a composite metal hydroxide, wherein said composite metal hydroxide having a layered structure containing iron ions and calcium ions;

and said material shows, as a result of X-ray crystal structure analysis, a diffraction pattern in which a total intensity of the main peaks attributed to calcium hydroxide or iron hydroxide is not larger than ½ of an intensity of the main peak attributed to the layered structure.

Dependencies are inferred from the claim text.

Facts

Application

12/558,757Filed 14 Sep 2009

Priority

JP 2008-24519825 Sep 2008

Published

25 Mar 2010

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

C02F 1/288
By sorption: using composite sorbents, e.g. coated, impregnated, multi-layered
B01J 20/0229
Compounds of Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt: compounds of Fe
B01J 20/041
Comprising compounds of alkali metals, alkaline earth metals or magnesium: oxides or hydroxides
B01J 20/06
Comprising inorganic material: comprising oxides or hydroxides of metals not provided for in group B01J20/04

Water purification material and water purification method employing the same

Life of this patent

Water purification material and water purification method employing the same

Life of this patent

Abstract

Claims6