科研之友
微信
新浪微博
Facebook
分享链接
摘要
An industrial (NH4)(2)WO4 solution was used to directly prepare ammonium metatungstate solution using bipolar membrane electrodialysis. The effects of current density, initial concentrations of NH4HCO3 and WO3 in feeds, temperature and pH of product solution on the process were investigated. A continuous running test was carried out under the optimum conditions and the results showed that the direct recovery of WO3 reached 99.97% with average current efficiency of 72.5% and power consumption of 0.877 kWh kg(-1) WO3 using a feed solution containing 172.3g L-1 WO3 and a base solution containing 1.5mol L-1 NH4HCO3 with a current density of 700 Am-2 and a solution pH in salt compartment of 2.8 at 31 degrees C for 600min, indicating easy and stable operation of the bipolar membrane electrodialysis process.
- 出版日期2017
- 单位中南大学
