电渗析法脱除硼酸锌中微量氯离子的研究  

Study on removal of trace chloride ions from zinc borate by electrodialysis

作　　者：周得文 聂国亮 罗清龙 董明哲 李军[1,2] 刘忠 吴志坚[1,2] ZHOU De-wen;NIE Guo-liang;LUO Qing-long;DONG Ming-zhe;LI Jun;LIU Zhong;WU Zhi-jian(Key Laboratory of Comprehensive and Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining 810008,China;Qinghai Provincial Key Laboratory of Salt Lake Resources Chemistry,Xining 810008,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院青海盐湖研究所,中国科学院盐湖资源综合高效利用重点实验室,青海西宁810008 [2]青海省盐湖资源化学重点实验室,青海西宁810008 [3]中国科学院大学,北京100049

出　　处：《现代化工》2022年第7期84-89,共6页Modern Chemical Industry

基　　金：国家自然科学基金(U20A20141);青海省自然科学基金(2020-ZJ-901)。

摘　　要：为了解决2ZnO·3B_(2)O_(3)·3H_(2)O(ZB-233)应用于印刷电路板(PCBs)阻燃使氯质量分数偏高导致电子器件发生腐蚀、漏电等问题,采用电渗析技术脱除氯并对实验因素进行探究与优化,得到了最佳工艺条件:电压为23 V、料浆质量分数为10%、电极液Na_(2)SO_(4)和NaNO_(3)浓度为0.03 mol/L;离子交换膜为亚斯通标准阴阳离子交换膜。在上述最佳工艺条件下,氯的脱除率可达87%,能耗为0.0291 kW·h/kg,最终得到的低氯ZB-233产品可满足PCBs氯质量分数的要求。When 2ZnO·3B_(2)O_(3)·3H_(2)O(ZB-233)is applied as flame retardant for printed circuit boards(PCBs),its high chlorine content can cause corrosion and electric leakage to happen to electronic devices.In order to solve these problems,the electrodialysis technology is utilized to remove chlorine,and the experimental factors are explored and optimized.The optimum chloring-removing process conditions are obtained as follows:the voltage is 23 V,the mass fraction of slurry is 10%,and the concentration of Na_(2)SO_(4) and NaNO_(3) in electrode solution is 0.03 mol·L^(-1),and a standard anion exchange membrane is used as ion exchange membrane.Under the optimum process conditions,the removal rate of chlorine can reach 87%and the energy consumption is 0.0291 kW·h·kg^(-1).The purified ZB-233 product with low chlorine content can meet the requirements of PCBs.

关 键 词：硼酸锌 阻燃 氯离子 电渗析 响应曲面法 

分 类 号：TQ132.4[化学工程—无机化工]