正辛醇为载体的乳化液膜法脱酚.pdf

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化工进展
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CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2010年第29卷第12期
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研究开发
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正辛醇为载体的乳化液膜法脱酚
张海燕,庞敏,吴韦,罗海军,宁英男,毛国梁
东北石油大学化学化工学院,石油与天然气化工黑龙江省重点实验室,黑龙江大庆163318)
摘要:采用正辛醇为载体的乳化液膜体系进行了苯酚和邻甲酚废水的脱酚试验,研究了乳化液中的载体、表
面活性剂、内相试剂浓度和油水比对脱酚效果的影响。在传质条件方面,考察了传质搅拌速率、传质时间、乳
水比和初始酚含量等因素的影响。结果表明,在乳化液中正辛醇体积分数0.4%、油水比1:1、液体石蜡体积分
数5%、表面活性荆T154体积分数6%、内相NaOH溶液浓度为0.6 mol/L、乳水比1:6的实验条件下,经过
級乳化液膜分离过程,可快逑脱除萃酚和邻甲酚,脱除率达到99%以上
关键词:乳化液膜;废水处理;正辛醇;苯酚;邻甲酚
中图分类号:TQ028.8
文献标志码:A
文章编号:1000-6613(2010)12-2400-05
Phenol removal through emulsion liquid membrane with
normal octanol as carrier
ZHANG Haiyan, PANG Min, WU Wei, LUO Haijun, NING Yingnan, MAO Guoliang
Provincal Key Laboratory of Oil and Gas Chemical Technology, College of Chemistry and Chemical Engineering
Northeast Petroleum University, Daqing 163318, Heilongjiang, China)
Abstract: Phenol removal from wastewater containing phenol and o-cresol by emulsion liquid
membrane with normal octanol as carrier was investugated by varying oil/water ratio, carrier
concentration, surfactant and internal phase reagent. Mass transfer conditions including stirring speed
mass transfer time, emulsion/water ratio and initial phenol content were also examined. Removal rate
of higher than 99% was achieved through one stage of emulsion liquid membrane separation in a short
time at conditions as: the concentrations of octanol, liquid wax, surfactant T154, NAOH in inner phas
were 0.4%, 5%, 6% and 0.6 mol/L respectively, while the oil/water ratio was 1: 1 and emulsion/water
ratio was 1:6
Key words: emulsion liquid membrane; wastewater treatment; normal octanol; phenol; o-cresol
酚类化合物作为化工原料应用很广泛。在酚的采用不含流动载体的乳化液膜体系进行分离,但
生产和应用过程中会产生大暈的酚及其衍生物废要达到深度脱酚,其处理时间较长,处理级数较
水,由于酚的毒性大,因此排放前必须对含酚废水多。本文作者以正辛醇为载体,对乳化液膜法处
进行处理。常用的处理方法有苯取、吸附体?、理含苯酚和邻甲酚模拟废水进行了有流动载体的
生物降解、液膜法12等。目前多采用萃取法,实验研究。
但萃取脱酚效率较低,需结合其它方法进行再处
理。液膜法主要分为乳化液膜和支撑液膜。乳位1乳化液膜脱聆原理
类物质等优点,受到诸多研究者的关をク回收酚
液膜法具有效率高、选择性好、节能、可
乳化液膜脱酚过程中传质和反应共存,其体系
由
于苯酚、邻甲酚等化合物具有油溶性的特点,多
收稿日期:201005-05:修改稿日期:2010-05
第一作者简介:张海燕(1957--),女,教授。E-mailzhyning@126.coma