Recovery and Separation of Vanadium and Chromium by Two-Step Alkaline Leaching Enhanced with an Electric Field and H(2)O(2)

[Image: see text] This paper focused on the treatment of vanadium–chromium reducing residue with a two-step alkaline leaching process: electro-oxidation leaching of vanadium and H(2)O(2) as well as oxidation leaching of chromium in an alkaline medium. The effects of experimental parameters on the le...

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Autores principales: Peng, Hao, Yang, Liu, Chen, Ya, Guo, Jing, Li, Bing
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7081394/
https://www.ncbi.nlm.nih.gov/pubmed/32201823
http://dx.doi.org/10.1021/acsomega.9b04346
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author Peng, Hao
Yang, Liu
Chen, Ya
Guo, Jing
Li, Bing
author_facet Peng, Hao
Yang, Liu
Chen, Ya
Guo, Jing
Li, Bing
author_sort Peng, Hao
collection PubMed
description [Image: see text] This paper focused on the treatment of vanadium–chromium reducing residue with a two-step alkaline leaching process: electro-oxidation leaching of vanadium and H(2)O(2) as well as oxidation leaching of chromium in an alkaline medium. The effects of experimental parameters on the leaching performance of vanadium and chromium were investigated. The experimental data showed that in the first alkaline leaching in stage I, the leaching efficiency of vanadium reached up to 95.32% under optimal conditions, while most of the chromium could not leach out (about 4% of chromium was leached out). Chromium was easily oxidized to high valence (CrO(4)(2–)) with H(2)O(2) in the second alkaline leaching stage II. Under optimal conditions, 96.24% chromium was leached out.
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spelling pubmed-70813942020-03-20 Recovery and Separation of Vanadium and Chromium by Two-Step Alkaline Leaching Enhanced with an Electric Field and H(2)O(2) Peng, Hao Yang, Liu Chen, Ya Guo, Jing Li, Bing ACS Omega [Image: see text] This paper focused on the treatment of vanadium–chromium reducing residue with a two-step alkaline leaching process: electro-oxidation leaching of vanadium and H(2)O(2) as well as oxidation leaching of chromium in an alkaline medium. The effects of experimental parameters on the leaching performance of vanadium and chromium were investigated. The experimental data showed that in the first alkaline leaching in stage I, the leaching efficiency of vanadium reached up to 95.32% under optimal conditions, while most of the chromium could not leach out (about 4% of chromium was leached out). Chromium was easily oxidized to high valence (CrO(4)(2–)) with H(2)O(2) in the second alkaline leaching stage II. Under optimal conditions, 96.24% chromium was leached out. American Chemical Society 2020-03-05 /pmc/articles/PMC7081394/ /pubmed/32201823 http://dx.doi.org/10.1021/acsomega.9b04346 Text en Copyright © 2020 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Peng, Hao
Yang, Liu
Chen, Ya
Guo, Jing
Li, Bing
Recovery and Separation of Vanadium and Chromium by Two-Step Alkaline Leaching Enhanced with an Electric Field and H(2)O(2)
title Recovery and Separation of Vanadium and Chromium by Two-Step Alkaline Leaching Enhanced with an Electric Field and H(2)O(2)
title_full Recovery and Separation of Vanadium and Chromium by Two-Step Alkaline Leaching Enhanced with an Electric Field and H(2)O(2)
title_fullStr Recovery and Separation of Vanadium and Chromium by Two-Step Alkaline Leaching Enhanced with an Electric Field and H(2)O(2)
title_full_unstemmed Recovery and Separation of Vanadium and Chromium by Two-Step Alkaline Leaching Enhanced with an Electric Field and H(2)O(2)
title_short Recovery and Separation of Vanadium and Chromium by Two-Step Alkaline Leaching Enhanced with an Electric Field and H(2)O(2)
title_sort recovery and separation of vanadium and chromium by two-step alkaline leaching enhanced with an electric field and h(2)o(2)
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7081394/
https://www.ncbi.nlm.nih.gov/pubmed/32201823
http://dx.doi.org/10.1021/acsomega.9b04346
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