摘要
采用油浴法合成了疏水性咪唑类离子液体[omim]PF6。研究了这种离子液体对油田污水的萃取,考察了萃取时间、离子液体加量、pH值对萃取效果的影响。实验结果表明,萃取15 min就可以达到平衡。污水COD的去除率随pH值的增大而减小,同时对再生离子液体处理油田污水的效果进行了探讨,离子液体的循环使用次数对处理污水的效果影响不大。
Imidazole-based hydrophobic ionic liquid PF6 was synthesized with oil bath.This experiment investigated extraction of oilfield wastewater with the ionic liquid,and inspected the effects of extraction time,the amount of ionic liquid and the pH value on the extraction result.The experiment indicated that extraction equilibrium could be reached within 15 minutes,and that the COD removal rate of oilfield wastewater would decrease when the pH value increased.At the same time,the effect of renewable ionic liquids treatment on oilfield wastewater treatment was discussed and it was found that the number of recycles for ionic liquids did not affect their ability of treating wastewater.
出处
《环境工程学报》
CAS
CSCD
北大核心
2010年第6期1327-1330,共4页
Chinese Journal of Environmental Engineering
基金
教育部科学技术研究重点项目(207032)
关键词
离子液体
油田污水
去除率
ionic liquids
oilfield wastewater
removal rate
