Recovery of Vanadium and Chromium from Residue
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 sulfuric acid, sodium hydroxide.The best leaching performance was showed by the acidic leaching, in which process, the residue was leached with sulfuric acid at 90 C for 120 min with the liquid-solid ratio of 4∶1 ml.g-1.The leaching efficiency of vanadium and chromium could reach a maximum value of 90.32% and 99.31%, respectively.While in alkaline leaching process, the high selectivity for vanadium was observed.The leaching efficiency increased from 62.64% to 91.71% enhanced by electric field.Hydrogen peroxide was also introduced to enhance the leaching process of vanadium and chromium, the leaching efficiency of vanadium and chromium could reach up to 86.49% and 98.60%, respectively.
vanadium chromium acid leaching alkaline leaching
Hao Peng Zuohua Liu Changyuan Tao
Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource Utilization, College of chemistry and chemical engineering, Chongqing University, Chongqing 400044, China
国内会议
沈阳
英文
116-120
2016-10-14（万方平台首次上网日期，不代表论文的发表时间）