PC-88A萃取镍离子的工艺条件探究与优化  

Exploration and Optimization of Process Conditions for Nickel Ions Extraction by PC-88A

作　　者：马诗琪 贾悦 陈华艳 吕晓龙 任笑石 MA Shiqi;JIA Yue;CHEN Huayan;LU Xiaolong;REN Xiaoshi(State Key Laboratory of Separation Membranes and Membrane Processes,Institute of Biological and Chemical Engineering,Tianjin,Polytechnic University;School of Environmental and Chemical Engineering,Tianjin Polytechnic University;School of Material Science and Engineering,Tianjin Polytechnic University,Tianjin 300387,China)

机构地区：[1]天津工业大学生物化工研究所,省部共建分离膜与膜过程国家重点实验室 [2]天津工业大学环境与化学工程学院 [3]天津工业大学材料科学与工程学院,天津300387

出　　处：《水处理技术》2019年第10期52-54,59,共4页Technology of Water Treatment

基　　金：天津市自然科学基金(17JCYBJC17400)

摘　　要：研究了酸性萃取剂2-乙基己基磷酸单2-乙基己基酯(PC-88A)萃取镍离子的萃取条件,反萃相硫酸含量对反萃效率的影响,并进行了优化。结果表明,优化萃取条件为:萃取反应温度40℃,萃取剂的体积分数80%,原料液初始pH为6.5,萃取剂皂化率为10%,此时PC-88A对Ni(Ⅱ)的萃取率高达98.0%。在此优化条件下获得的负载有机相,采用0.8 mol/L的硫酸进行反萃,反萃率达到93.6%。The extraction conditions of the nickel ions extraction by an acid extractant 2-ethylhexyl phosphate mono 2-ethylhexyl ester(PC-88 A)were studied.The effect of the sulfuric acid content in reverse extraction phase on reverse extraction efficiency was researched and optimized.The results showed that,the optimum extraction conditions were as followed,the reaction temperature was 40℃,the extractant volume fraction was 80%,the initial pH of the feed solution was 6.5,and the saponification rate of the extractant was 10%.At these conditions,the extraction rate of Ni(Ⅱ)by PC-88 A achieved98.0%.The loaded organic phase obtained at the above conditions was further extracted by sulfuric acid at a concentration of 0.8 mol/L,the reverse extraction rate reached 93.6%.

关 键 词：镍 工业废水 溶剂萃取 皂化反应 PC-88A 

分 类 号：X703.1[环境科学与工程—环境工程]