US 11,309,098 B2 · Mineralogical method and apparatus for removal of aqueous cesium ion

Abstract

Mineralogical method and apparatus for removal of cesium ion in aqueous solution are provided. In particular, a mineralogical method for removal of cesium ion in aqueous solution including controlling a temperature of radioactive wastewater containing cesium from 25 to 45° C., controlling an initial pH of the radioactive wastewater from 6.0 to 8.5, and adding iron(II) and sulfide(−II) containing sulfur in the −2 oxidation state to the radioactive wastewater, to convert the cesium ion in aqueous solution into a cesium mineral, and a mineralogical apparatus for removal of cesium ion in aqueous solution, capable of being applied to such a method, are provided.

Claims13

Dependent claims

A mineralogical method for removal of cesium ion, comprising adding iron(II) and sulfide(−II) containing sulfur in the −2 oxidation state to radioactive wastewater containing cesium, to convert the cesium ion into a cesium mineral,

wherein the iron(II) and the sulfide(−II) in the adding of the iron(II) and the sulfide(−II) are added in a molar ratio of 1:1 to 1:2 based on 1 mol of the iron(II).

Dependencies are inferred from the claim text.

Facts

Application

16/789,623Filed 13 Feb 2020

Priority

KR 10-2019-001681613 Feb 2019

Published

US 2020/0258646 A113 Aug 2020

Granted

19 Apr 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification4 codes

G21F 9/06
Treating liquids: processing
G21F 9/16
Processing: by fixation in stable solid media
G21F 9/12
Processing: by absorption; by adsorption; by ion-exchange
G21F
Protection against x-radiation, gamma radiation, corpuscular radiation or particle bombardment

Mineralogical method and apparatus for removal of aqueous cesium ion

Life of this patent

Mineralogical method and apparatus for removal of aqueous cesium ion

Life of this patent

Abstract

Claims13