文献类型：期刊文献

中文题名：液膜法提取硝酸水溶液中Ag^+的工艺过程

英文题名：Recovering Silver from HNO_3 Solution by Liquid Surfactant Membrane Technique

作者：张平[1];路琼华[1];李盘生[1]

机构：[1]华东化工学院化学工程系

年份：1993

卷号：19

期号：5

起止页码：538

中文期刊名：华东化工学院学报

收录：国家哲学社会科学学术期刊数据库;Scopus;CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：液膜;银;硝酸;回收;膜分离

外文关键词：liquid surfactant membrane; silver; nitric acid; petroleum thio-ether; recovery

摘要：液膜的组成为:2%石油硫醚-4%多丁二酰亚胺-94%煤油,内相试剂为:1～2mol/L的氨水溶液。较为适宜的操作条件为:乳水比为1:3;内油比为0.8:1;外相硝酸浓度为0.5～1mol/L;常温操作。当料液中的银离子浓度小于800ppm时,一次提取率可达97%以上。本工艺具有分离速度快,效率高、选择性好等优点。
The liquid surfactant membrane technique for extract silver ion from waste aqueous solution of silver nitrate has been proven to have the merits of high separation rate, high efficiency and high selectivity. When the concentration of silver ion is less than 800ppm, percentage extraction of more than 97% is obtained. The composition of liquid membrane is 2wt% petroleum thio-ether, 4wt% Lan 113C and 94wt% kerosene. The internal phase is 1～2mol/L of aqueous ammonia. The volume ratio between emulsion and external phase and that between internal and membrane phase are 1 : 3 and 0.8:1 respectively at room temperature, and the concentration of nitric acid in the external aqueous phase is 0.5～1.0mol/L.