Leaching of Vanadium and Chromium from Residue
Peng H, Liu Z and Tao C*
Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, College of chemistry and chemical engineering,Chongqing University, Chongqing, China
- *Corresponding Author:
- Dr. Changyuan Tao
Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization
College of chemistry and chemical engineering, Chongqing University, Chongqing, China
Tel: +86 2365105106
E-mail: [email protected]
Received Date: November 18, 2015 Accepted Date: January 23, 2016 Published Date: February 05, 2016
Citation: Peng H, Liu Z, Tao C (2016) Leaching of Vanadium and Chromium from Residue. J Res Development 4: 139.
Copyright: © 2016 Peng H, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
A residue containing 18.80 wt% Cr and 3.11 wt% V was obtained from a wastewater treatment plant. Experiments on vanadium and chromium leaching from the residue were carried out by H2SO4, NaOH and H2O2. It was found that acidic leaching had high leaching efficiency but it was hard to filtrate, while alkaline leaching offered high selectivity for vanadium. The leaching efficiency of vanadium could increase from 62.64% up to 78.69% in the concentrated NaOH solution enhanced by electric field. And also under the specified condition, the leaching efficiency of vanadium and chromium was up to 97.77% and 95.14%, respectively, during the leaching process oxidized with H2O2 and electric field.