化工学报2015，Vol.66Issue(12)：5060-5066,7.DOI:10.11949/j.issn.0438-1157.20151074
喷射床电沉积法处理铜镍混合废水
Treatment of copper-nickel mixed wastewater by spouted bed electro-deposition method
摘要
Abstract
Constant current spouted bed particle electro-deposition method had been studied with simulated wastewater containing copper and nickel as the research object under different experimental conditions such as pH, current, temperature with N2. experimental results showed that under the experiment conditions of pH 3 (first 210 min) and 4.5 (next 270 min), electrolyte concentration 1 g·L-1, constant current 15 A, cathode particle size 1.8 mm, electrolyte temperature 25℃ with blowing N2, the largest removal rate of Cu2+ was 99.88% and Ni2+ was 85.21% after 480 min. During the experiments, DO first rapid increased to the maximum, and then came down slowly. Blowing N2 into electrolyte could significantly reduce the dissolved oxygen concentration, which could effectively inhibit deposited Cu and Ni once again return to dissolve and improve the removal rate of deposited metals. The replacement reaction between Ni and Cu2+ weakened, the corrosion rate of deposited copper while it was intensified for nickel. Thus, the electro-deposition of mixed copper and nickel showed a certain order, which suggested that the separate recycling of metals in wastewater was feasible with the spouted bed particle electro-deposition method under certain conditions.关键词
电化学/喷射床/流态化/电流效率/传质Key words
electrochemistry/spouted bed/fluidization/current efficiency/mass transfer分类
资源环境引用本文复制引用
陈熙,徐新阳,赵冰,李海波..喷射床电沉积法处理铜镍混合废水[J].化工学报,2015,66(12):5060-5066,7.基金项目
辽宁省自然科学基金项目(2014020036) （2014020036）
国家水体污染与治理重大专项(2014ZX07201-009-04). supported by the Natural Science Foundation of Liaoning Province (2014020036) and the National Water Pollution Control and Management Technology Major Projects (2014ZX07201-009-04). （2014ZX07201-009-04）
