Highly Efficient Recovery of Vanadium and Chromium: Optimized by Response Surface Methodology

Hao Peng; Feng Wang; Gang Li; Jing Guo; Bing Li

doi:10.1021/acsomega.8b02708

Highly Efficient Recovery of Vanadium and Chromium: Optimized by Response Surface Methodology

ACS Omega. 2019 Jan 10;4(1):904-910. doi: 10.1021/acsomega.8b02708. eCollection 2019 Jan 31.

Authors

Hao Peng¹, Feng Wang¹, Gang Li¹, Jing Guo¹, Bing Li¹

Affiliation

¹ Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Fuling, Chongqing 408100, P. R. China.

Abstract

Response surface methodology was applied to optimize the processing parameters (dosage of NaOH, dosage of H₂O₂, reaction temperature, liquid-to-solid ratio, stirring rate, and reaction time) that affected the leaching process of vanadium and chromium. The results indicated that the leaching process of vanadium was significantly affected by the dosage of NaOH and dosage of H₂O₂ used in the experiments, whereas the processing parameters affected the leaching efficiency of chromium in the following order: dosage of H₂O₂ (F) > reaction temperature (C) > dosage of NaOH (A) > reaction time (B) > stirring rate (D) > liquid-to-solid ratio (E). Almost 98.60% of vanadium and 79.82% of chromium were leached out during the leaching process.