One-step removal of Cr(VI) at alkaline pH by UV/sulfite process: Reduction to Cr(III) and in situ Cr(III) precipitation

• Published in: Chemical engineering journal (Lausanne, Switzerland : 1996) Vol. 308; pp. 791 - 797
• Main Authors: Xie, Bihuang, Shan, Chao, Xu, Zhe, Li, Xuchun, Zhang, Xiaolin, Chen, Jiajia, Pan, Bingcai
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.01.2017
• Subjects: Alkaline pHs; Cr(VI); Precipitation; Reduction; UV/sulfite process; Alkaline pHs; Reduction; Precipitation; Cr(VI); UV/sulfite process

[Display omitted] •Cr(VI) was efficiently reduced to Cr(III) at alkaline pHs by UV/sulfite process.•Common ions and organic matters interfered with Cr(VI) reduction slightly.•Spontaneous precipitation of Cr(III) occurred in the presence of Ca2+ (>2ppm).•eaq− was identified as the dominant reactiv...