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THE REDUCTION OF CR(VI) TO CR(III) MEDIATED BY ENVIRONMENTALLY RELEVANT CARBOXYLIC ACIDS: STATE-OF-THE-ART AND PERSPECTIVES
Jiang, B., Y. Gong, J. Gao, T. Sun, Y. Liu, N. Oturan, and M.A. Oturan.
Journal of Hazardous Materials 365:205-226(2018)

Mechanisms of Cr(VI) reduction are mainly associated with the coordination of carboxylic acids (CAs) with surface-bound/dissolved metals or Cr(VI, V, IV) species and the electron donating abilities of CAs. The general decays of intermediate Cr(V, IV) complexes emerge in the Cr(VI) reduction processes. From the study survey presented, CAs-mediated Cr(VI) reduction processes exhibit good potential for remediation of various Cr(VI)-contaminated waters/sites, but the need remains to address the remaining bottlenecks and challenges for remediation of Cr(VI) mediated by CAs in related cases of natural attenuation and treatment of industrial effluents.



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