RECOVERY OF BORIC-ACID FROM WASTE-WATER BY SOLVENT-EXTRACTION

Authors
MATSUMOTO M KONDO K HIRATA M KOKUBU S HANO T TAKADA T
Citation
M. Matsumoto et al., RECOVERY OF BORIC-ACID FROM WASTE-WATER BY SOLVENT-EXTRACTION, Separation science and technology, 32(5), 1997, pp. 983-991
Citations number
10
Categorie Soggetti
Engineering, Chemical",Chemistry
Journal title
Separation science and technology → ACNP
ISSN journal
01496395
Volume
32
Issue
5
Year of publication
1997
Pages
983 - 991
Database
ISI
SICI code
0149-6395(1997)32:5<983:ROBFWB>2.0.ZU;2-I
Abstract
An extraction system for the recovery of boric acid using 2-butyl-2-et hyl-1,3-propanediol (BEPD) as an extractant was studied. Loss of the e xtractant to the aqueous solution was lowered by using 2-ethylhexanol as a diluent. The extraction equilibrium of boric acid with BEPD was c larified, and the equilibrium constants for various diluents were dete rmined. Furthermore, continuous operation for the recovery of boric ac id using mixer-settlers for extraction and stripping was successfully conducted during 100 hours.