Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Reduction Behavior of Chromium (VI) with Oxalic Acid in Aqueous Solution

Version 1 : Received: 18 August 2020 / Approved: 20 August 2020 / Online: 20 August 2020 (05:40:51 CEST)

How to cite: Peng, H.; Guo, J.; Yuan, B.; Lv, L.; Huang, H.; Li, B. Reduction Behavior of Chromium (VI) with Oxalic Acid in Aqueous Solution. Preprints 2020, 2020080427 (doi: 10.20944/preprints202008.0427.v1). Peng, H.; Guo, J.; Yuan, B.; Lv, L.; Huang, H.; Li, B. Reduction Behavior of Chromium (VI) with Oxalic Acid in Aqueous Solution. Preprints 2020, 2020080427 (doi: 10.20944/preprints202008.0427.v1).

Abstract

The direct Cr (VI) reduction process by oxalic acid was conducted and the results showed that the Cr (VI) was efficiently reduced by oxalic acid at high reaction temperature and high dosage of oxalic acid. The reduced product, Cr (III), was easily generated stable complex compounds (Cr(HC2O4)3) with oxalate, which displayed a negative effect on the reduction process. The high reaction temperature and high acidic medium could destroy the stable structure of a complex compound to release oxalate, and facilitate the reduction of Cr (VI). Generally, the present study provided a versatile strategy for Cr (VI) reduction, exhibiting a bright application future for real wastewater treatment.

Subject Areas

chromium; reduction; oxalic acid

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