二次萃取法提纯2,4-D废水中氯代酚  

Treatment of Waste Water from 2,4-Dichlorophenoxy acetic acid Using Complex Extraction

作　　者：奚照寿[1] 

机构地区：[1]江苏畜牧兽医职业技术学院,江苏泰州225300

出　　处：《泰州职业技术学院学报》2008年第5期57-59,共3页Journal of Taizhou Polytechnic College

摘　　要：以二甲苯为萃取剂,通过二次萃取的方式,对2,4-二氯苯氧乙酸废水进行处理。研究了萃取剂种类、油水比、废水pH值以及反萃液的pH值对提纯氯代酚的影响。结果表明一次萃取油水比为0.4/1,pH在4.60～4.62,一次反萃液的pH值在5.05左右,氯代酚萃取效率达到最高。使得废水中的氯代酚能够返回生产循环利用。Treatment of 2,4-dichlorophenoxy acetic acid wastewater with complex extraction method was studied, using xylene as extractant. The influence of the sort, the ratio of oil and water, pH of wastewater and pH of the stripping of wastewater on the purification of Chloro phenol were studied. The result showed that the optimum conditions are first extraction oil-water ratio 0.4/1, An extraction pH of wastewater 4.60-4.62, Second extraction pH of wastewater 5.05, the extraction efficiency of Chloro phenol comes to peak.The Chloro phenol was effectively extracted which can be recovered and reused in the next disposing.

关 键 词：萃取 2 4-二氯苯氧乙酸 2 6-二氯苯氧乙酸 2 4-二氯苯酚 2 6-二氯苯酚 萃取率 

分 类 号：TQ124.4[化学工程—无机化工]