Patent · US Active

Boron separation and recovery

US7807032B2 · kind B2 · utility

6Cited by

2References

17Claims

0Family size

Assignee

VATTENFALL AB · SE

Inventors

Jinying Yan · Ljungby, SE
Anna Velin · Oststraße, SE
Bernt Bengtsson · Väröbacka, SE

Key dates

Filing date	Jun 23, 2003
Grant date	Oct 5, 2010
Priority date	—
Expiry date	Oct 17, 2026

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC02F1/4695
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process is provided for separating, concentrating and recovery of boron compound from aqueous solution containing boron, strongly dissociated anions and some cations. The process specifically integrates electrodialysis with ion exchange to selectively separate boron from aqueous solution that contains a wide concentration range of boron, strongly ionised anions such as chloride, nitrate and sulfate, and cations like lithium. The process is adapted for controlling boron concentration in an industrial process, for the recovery or purification of boron and some cations like lithium form aqueous solutions, and for wastewater treatment.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.