化工进展2017，Vol.36Issue(10)：3625-3632,8.DOI:10.16085/j.issn.1000-6613.2017-0106
溶剂萃取-树脂吸附联合脱除盐湖老卤中的微量硼
Removal of micro-amount boron from salt lake brine by solvent extraction-resin adsorption combined method
王雄 1刘明言 1宋军超2
作者信息
- 1. 天津大学化工学院,天津化学化工协同创新中心(天津),天津300350
- 2. 化学工程联合国家重点实验室(天津大学),天津300350
- 折叠
摘要
Abstract
A solvent extraction-resin adsorption combined method was developed to recover and remove micro-amount boron from brine of salt lake in Qinghai.The effects ofpH,phase ratio,extraction stages on extraction process,and the effect of pH of brine after first stage extraction,resin dosage on boron adsorption were investigated.The adsorption isotherm and kinetics were studied.The stripping and elution process were also optimized.The results showed that best extraction result could be obtained when pH was 2.The reduction of boron concentration was not obvious when the phase ratio and extraction stage value were above 3.The best pH for boron adsorption from brine was 7.The adsorption kinetics and adsorption isotherm data were fitted well with pseudo-second-order rate model and Langmuir model,respectively.The concentration of boron could be reduced to 1.0mg/L or less when resin dosage is 6g/(100mL brine) using the extraction-adsorption combined method.The proper stripping agent and eluent were 0.1 mol/L NaOH and 0.5mol/L HCl,respectively.关键词
溶剂萃取/吸附/硼酸/盐湖卤水Key words
solvent extraction/adsorption/boric acid/salt lake brine分类
化学化工引用本文复制引用
王雄,刘明言,宋军超..溶剂萃取-树脂吸附联合脱除盐湖老卤中的微量硼[J].化工进展,2017,36(10):3625-3632,8.
