摘要
利用聚乙二醇(PEG)600和(NH_4)_2SO_4双水相系统结合原子吸收光谱法对铅污染模拟的水体进行萃取工艺优化研究。在研究PEG600-(NH4)2SO4-H2O双水相体系中各单因素对铅离子的萃取率的影响基础上,再用响应面试验优化双水相萃取污水中铅的最佳萃取工艺。最终得到的最佳工艺为:PEG600体积分数为40.25%、(NH_4)_2SO_4质量浓度为0.17g·mL^(-1)、pH为2.55、温度为40.28℃,在此工艺条件下的萃取率可达87.26%。
A PEG600 and（NH4）2SO4 two-phase aqueous filtration system was used in lab for studying the removal of lead ions from waste water.Based on the analytical data obtained from atomic absorption spectrometry,a response surface methodology was applied to optimize the technology.The optimal processing conditions included 40.25% on volume fraction of PEG600,0.17 g·mL^-1 of（NH4）2SO4,pH at 2.55,and temperature at 40.28 to render a lead removal rate of 87.47%.
作者
谢勇武
谭属琼
杨星霞
XIE Yong-wu;TAN Shu-qiong;YANG Xing-xia(Fujian Normal University MinNan Science and Technology Institute, Quanzhou, Fujian 362332, Chin)
出处
《福建农业学报》
CAS
北大核心
2018年第4期430-437,共8页
Fujian Journal of Agricultural Sciences
基金
福建省教育厅中青年科技项目(JAT170877)
福建师范大学闽南科技学院教改项目(MKJG-2017-005)
关键词
响应面法
原子吸收光谱
双水相萃取
铅离子
response surfaee method
atomic absorption spectrometry
two-phase aqueous filtration system
lead ion
