摘要
以TBP,D2EHDTPA及N_(235)为萃取剂,对盐酸体系中含砷及其它金属离子的溶液进行萃取实验,选择了两种合适有机相组成:25％TBP+25％D2EHDTPA+50％磺化煤油及25％N_(235)+50％磺化煤油+25％2-乙基己醇(反萃时加入),能使砷与其它金属离子分离。用选择的有机相对某生产实际溶液进行砷的分离实验,以达到消除污染及综合回收的目的。本文还用红外光谱法探讨了上述萃取剂萃取As(Ⅲ)及As(Ⅴ)的机理。
Two proper extractants composed of 25%TBP+25%D2EHDTPA+50% kerosine and 25%N_(235)+50% kerosine+25% 2-ethyl hexanol are proposed in order to separate arsenic from other co-existed metallic cations and reduce its pollution. The mechanism of the extraction of As(Ⅲ) and As(Ⅴ) by TBP and D2EHDTPA is also discussed based on the infrared spectra technique.
关键词
砷
分离
萃取
盐酸体系
extraction
seperation
arsenic
