摘要
采用N7301为流动载体,Span-80为表面活性剂,煤油为膜溶剂,以H2SO4为内相试剂的乳状液膜体系分离回收废水中的MnO^-_4。研究了迁移机理,确定了制乳、分离等最佳操作条件。结果表明,对于7-125mg/L低浓度的含锰废水,一次性分离可降至0.1mg/L以下,锰的回收率达99.8％。
Mn(VII) was recovered from wastewater by using emulsion liquid membrane made of N7301 as carrier,Span-80 as surfactant, kerosene as solvent and sulfuric acid as internal phase. Transfer mechanisms are studied and optimal conditions of emulsion preparation and separation are determined. Results show that the concentration of Mn (VII) in wastewater can be re-duced from 7-125 mg/L to less than 0.1 mg/L in one run and the Mn(VII) recovery rate can reach 99.8% .
出处
《现代化工》
CAS
CSCD
北大核心
2002年第5期30-33,共4页
Modern Chemical Industry
基金
河北省科技厅项目(01276706)
唐山市科委项目(0122311)
