Optimization of Cr(VI) removal by sulfate-reducing bacteria using response surface methodology. Issue 24 (20th May 2016)

• Record Type: Journal Article
• Authors: Ahmadi, R.; Rezaee, A.; Anvari, M.; Hossini, H.; Rastegar, S.O.
• Is Part Of: Desalination and water treatment. Volume 57:Issue 24(2016)
• Page Start: 11096
• Page End: 11102
• Publication Date: 2016-05-20
• Subjects: Cr(VI) -- Sulfate-reducing bacteria -- Response surface methodology -- Optimization -- Kinetic; Saline water conversion -- Periodicals; Saline water conversion; Water -- Purification; Periodicals; 628.167
• DOI: 10.1080/19443994.2015.1041055
• Languages: English
• ISSNs: 1944-3994

Abstract

Abstract: The aim of this work was to optimize Cr(VI) removal using sulfate-reducing bacteria from wastewater. Three effective factors including initial pH, initial Cr(VI) concentration, and inoculation percentage were optimized using a central composite design of response surface methodology. The optimum conditions were initial pH 7.5, initial Cr(VI) concentration 130 mg/l, and inoculation percentage 7.75%, and the maximum Cr(VI) removal was 82%. The kinetics study of Cr(VI) removal showed the pseudo-first-order model described experimental data better and was selected as an overall kinetic Cr(VI) removal.