{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Peng H"],"funding":["Chongqing Science and Technology Commission","National Natural Science Foundation of China","Chongqing Municipal Education Commission"],"pagination":["27478-27484"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC8529671"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["6(41)"],"pubmed_abstract":["This paper focused on the oxidation-alkaline extraction process of vanadium-chromium-reducing residue. The affected parameters including reaction temperature, KMnO<sub>4</sub> dosage, reaction time, NaOH dosage, and liquid-to-solid ratio on the extraction process were investigated. The E-pH diagram and the thermodynamic analysis indicated that KMnO<sub>4</sub> was suitable for the oxidation of low-valence vanadium and chromium. Vanadium (97.24%) and chromium (56.20%) were extracted under the following optimal reaction conditions: reaction temperature of 90 °C, reaction time of 90 min, dosage of KMnO<sub>4</sub> at <i>m</i>(KMnO<sub>4</sub>)/<i>m</i>(residue) = 0.40, dosage of NaOH at <i>m</i>(NaOH)/<i>m</i>(residue) = 0.30, and liquid-to-solid ratio at 5:1 mL/g. The extraction process of vanadium was controlled by the reactant through the solid product layer and the extraction kinetics behavior fitted well with the shrink core model with an <i>E</i> <sub>a</sub> of 15.37 kJ/mol. At the same time, the surface chemical reaction was the controlling step for chromium extraction, which was difficult with an <i>E</i> <sub>a</sub> of 39.78 kJ/mol."],"journal":["ACS omega"],"pubmed_title":["Novel Technology for Vanadium and Chromium Extraction with KMnO<sub>4</sub> in an Alkaline Medium."],"pmcid":["PMC8529671"],"funding_grant_id":["KJQN201901403","51804062","CXQT20026","cstc2018jcyjAX0018"],"pubmed_authors":["Peng H","Guo J","Huang H","Zhang X","Li B"],"additional_accession":[]},"is_claimable":false,"name":"Novel Technology for Vanadium and Chromium Extraction with KMnO<sub>4</sub> in an Alkaline Medium.","description":"This paper focused on the oxidation-alkaline extraction process of vanadium-chromium-reducing residue. The affected parameters including reaction temperature, KMnO<sub>4</sub> dosage, reaction time, NaOH dosage, and liquid-to-solid ratio on the extraction process were investigated. The E-pH diagram and the thermodynamic analysis indicated that KMnO<sub>4</sub> was suitable for the oxidation of low-valence vanadium and chromium. Vanadium (97.24%) and chromium (56.20%) were extracted under the following optimal reaction conditions: reaction temperature of 90 °C, reaction time of 90 min, dosage of KMnO<sub>4</sub> at <i>m</i>(KMnO<sub>4</sub>)/<i>m</i>(residue) = 0.40, dosage of NaOH at <i>m</i>(NaOH)/<i>m</i>(residue) = 0.30, and liquid-to-solid ratio at 5:1 mL/g. The extraction process of vanadium was controlled by the reactant through the solid product layer and the extraction kinetics behavior fitted well with the shrink core model with an <i>E</i> <sub>a</sub> of 15.37 kJ/mol. At the same time, the surface chemical reaction was the controlling step for chromium extraction, which was difficult with an <i>E</i> <sub>a</sub> of 39.78 kJ/mol.","dates":{"release":"2021-01-01T00:00:00Z","publication":"2021 Oct","modification":"2025-04-04T21:30:17.749Z","creation":"2025-04-04T21:30:17.749Z"},"accession":"S-EPMC8529671","cross_references":{"pubmed":["34693168"],"doi":["10.1021/acsomega.1c04397"]}}