APPLICATION OF NANOFILTRATION TO SEPARATE SALTS FROM A HYDROGEN-SULFIDE SCRUBBER SOLUTION

Citation
Akm. Jamaluddin et al., APPLICATION OF NANOFILTRATION TO SEPARATE SALTS FROM A HYDROGEN-SULFIDE SCRUBBER SOLUTION, Canadian journal of chemical engineering, 71(3), 1993, pp. 377-382
Citations number
10
Categorie Soggetti
Engineering, Chemical
ISSN journal
00084034
Volume
71
Issue
3
Year of publication
1993
Pages
377 - 382
Database
ISI
SICI code
0008-4034(1993)71:3<377:AONTSS>2.0.ZU;2-H
Abstract
Experiments were carried out using nanofiltration to separate salts fr om a hydrogen sulphide scrubber solution taken from an iron-based liqu id-redox process. The scrubber solution used in these experiments cont ained organic chelating agents, iron, and various alkali metal inorgan ic salts (i.e., sulphates, thiosulphates, carbonates, and bicarbonates ). The nanofiltration unit was equipped with monovalent ion-selective membranes. Results indicated that the nanofiltration membranes retaine d organic materials and iron and allowed ionic species (e.g., SO42-, S 2O3-, CO32-, HCO3-) to permeate. Results also indicated that the nanof iltration membranes used in these experiments preferentially removed C O32- and HCO3- over SO42- and S2O32-. The nanofiltration tests did not show any sign of membrane degradation in terms of ion selectivity; ho wever, at high total-dissolved solids concentrations, the permeate flo w rate was reduced.