US 8,476,188 B2 · Cloth-like radioactive material adsorbent and its manufacturing method

Abstract

A renewable adsorbent enabling to adsorb cesium selectively and efficiently, and to reuse cesium by eluting adsorbed cesium, and its manufacturing method are provided. Polyethylene (PE)/polypropylene (PP) based non-woven fabric may be exposed with electron beam, PE/PP based non-woven fabric to which electron beam was exposed is contacted to the monomer solution containing acrylonitrile (AN), dimethyl sulfoxide (DMSO), Tween80 (polyoxyethylene sorbitan monooleate) as a surfactant, and AMP (ammonium molybdophosphate n-hydrate) as an inorganic ion exchanger, and then the inorganic ion exchanger (AMP) is supported directly by the non-ionic graft chain.

Claims6

Dependent claims

A manufacturing method of cesium adsorbent comprises;

generating radical by electron beam exposure to polyethylene (PE) based non-woven fabrics or polyethylene (PE)/polypropylene (PP) based non-woven fabric;
forming a graft polymerization product by contacting said non-woven fabrics to a monomer solution manufactured by mixing acrylonitrile (AN), solvent for AN, surfactant and one selected from a group including stannum molybdophosphate, titanium molybdophosphate and ammonium molybdophosphate n-hydrate (AMP) with a relevant weight ratio;
immersing the graft polymerization product in toluene, and washing said non-woven fabric entirely;
and
drying in a vacuum said graft polymerization product in which said AMP is supported after completing washing with toluene.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/487,718Filed 4 Jun 2012

Priority

JP 2011-13655820 Jun 2011

Published

US 2012/0329637 A127 Dec 2012

Granted

2 Jul 2013

Term ends

Not estimatedThe source records don’t support an estimate.

Classification18 codes

D06M 14/10
On to materials of synthetic origin: of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
B01J 20/264
Synthetic macromolecular compounds: derived from different types of monomers, e.g. linear or branched copolymers, block copolymers, graft copolymers
B01J 20/28033
Characterised by their form: membrane, sheet, cloth, pad, lamellar or mat
C02F 1/288
By sorption: using composite sorbents, e.g. coated, impregnated, multi-layered

Cloth-like radioactive material adsorbent and its manufacturing method

Life of this patent

Cloth-like radioactive material adsorbent and its manufacturing method

Life of this patent

Abstract

Claims6