Li Hongyi, Li Cui, Zhang Meng, Xie Bing. Study on Separation of Vanadium and Chromium by Ion Exchange Resin[J]. IRON STEEL VANADIUM TITANIUM, 2014, 35(3): 5-9. doi: 10.7513/j.issn.1004-7638.2014.03.002
Citation:
Li Hongyi, Li Cui, Zhang Meng, Xie Bing. Study on Separation of Vanadium and Chromium by Ion Exchange Resin[J]. IRON STEEL VANADIUM TITANIUM, 2014, 35(3): 5-9. doi: 10.7513/j.issn.1004-7638.2014.03.002
Li Hongyi, Li Cui, Zhang Meng, Xie Bing. Study on Separation of Vanadium and Chromium by Ion Exchange Resin[J]. IRON STEEL VANADIUM TITANIUM, 2014, 35(3): 5-9. doi: 10.7513/j.issn.1004-7638.2014.03.002
Citation:
Li Hongyi, Li Cui, Zhang Meng, Xie Bing. Study on Separation of Vanadium and Chromium by Ion Exchange Resin[J]. IRON STEEL VANADIUM TITANIUM, 2014, 35(3): 5-9. doi: 10.7513/j.issn.1004-7638.2014.03.002
Vanadium and chromium respectively exist as V(V) and Cr(VI) in the waste water produced in the procedure of vanadium precipitation.It is a particularly significant issue to reduce the environmental pollution by the waste water and recover the valuable metals simultaneously.An anion exchange resin was used to realize the separation and extraction of vanadium and chromium from the waste water by absorbing V(V) selectively.Before adsorption,V(V) and Cr(VI) were respectively reduced to V(IV) and Cr(III),afterwards V(IV) was oxidized to V(V) while Cr(III) remained to exist in the form of Cr3+.The dependence of vanadium adsorption on temperature,solution pH,concentration of ions and contacting time were investigated,and the adsorption conditions were optimized.The results show that the purity of vanadium and chromium final products are respectively about 96% and 93%,and the recovery rate of vanadium and chromium are 72% and 95%,respectively.
DownLoad: