Journal
MATERIALS LETTERS
Volume 176, Issue -, Pages 106-109Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2016.04.090
Keywords
Chromium; Reduction; Deposition; Solar light; Extraction; TiO2 surface
Funding
- Ministry of Higher Education (Algeria) [E01120/11/0065]
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The main objective of this work was the extraction of Cr(III) from TiO2 surface deposited after Cr(VI) reduction by TiO2 solar photocatalysis. The results show that the reduction of Cr(VI) to Cr(III) by TiO2 under natural sunlight is total after 2 h using tartaric acid (A.T) as a hole scavenger under the following conditions: [Cr(VI)]: 20 ppm, [TiO2]: 2 g/L, [A.T]: 60 ppm and pH: 2.2. The produced Cr(III) is divided between deposited onto TiO2 surface (39.75%) and in the solution (60.25%). The Cr(III) removal from TiO2 surface by the sequential extraction after three washing were 90.13% and 42.62% using citric acid and EDTA respectively. (C) 2016 Elsevier B.V. All rights reserved.
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