| 络合萃取法处理对羟基苯甲酸废水 |
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| 引用本文： | 诸葛蓉,王玉萍,沈燕,彭盘英.络合萃取法处理对羟基苯甲酸废水[J].南京师大学报,2009,32(1). |
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| 作者姓名： | 诸葛蓉 王玉萍 沈燕 彭盘英 |
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| 作者单位： | 南京师范大学化学与环境科学学院,江苏,南京,210097
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| 基金项目： | 江苏省教委自然科学基金 |
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| 摘 要： | 以三辛胺为络合剂,二甲苯为稀释剂,通过萃取-反萃取的方式,回收对羟基苯甲酸生产过程中产生的苯酚和对羟基苯甲酸.研究了萃取剂种类、浓度、油水比、废水的pH值、混合时间及萃取级数对萃取效率的影响;考察了KOH浓度对反萃取效率的影响.结果表明:在适当工艺条件下,以体积浓度为30%的三辛胺和二甲苯作为萃取剂,油水比为0.3,废水的pH为1.26,混合时间为3 min,采用二级萃取,苯酚、对羟基苯甲酸萃取率均达到99.9%,废水的CODc,去除率可达99.6%.
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| 关 键 词： | 络合萃取 苯酚 对羟基苯甲酸 萃取率 |
Treatment of Wastewater From p-Hydroxybenzoic Acid Using Complex Extraction |
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| Zhu Gerong,Wang Yuping,Shen Yan,Peng Panying.Treatment of Wastewater From p-Hydroxybenzoic Acid Using Complex Extraction[J].Journal of Nanjing Normal University(Natural Science Edition),2009,32(1). |
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| Authors: | Zhu Gerong Wang Yuping Shen Yan Peng Panying |
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| Institution: | School of Chemistry and Environmental Science;Nanjing Normal University;Nanjing 210097;China |
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| Abstract: | Treatment of p-hydroxybenzoic acid wastewater with complex extraction method was studied,using tri-octylamine as extractant and xylene as diluent.The influence of types of extractant,extractant-diluent ratio,the ratio of oil-water,pH of wastewater,extraction mixing time and extraction stages on wastewater extraction efficiency were studied.Using KOH as stripping agent,the effect of KOH dosage on the stripping efficiency was studied.The results showed that the extracting efficiency of phenol and p-hydroxyben... |
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| Keywords: | complex extraction phenol p-hydroxybenzoic acid extracting efficiency |
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