络合萃取法回收生物油加氢水相中的乙酸  

Recovery of acetic acid from aqueous phase of bio-oil hydrogenation by reactive extraction

作　　者：陈瑞红[1] 翟赟璞[1] 刘永刚[1] 张瑞芹[1] 

机构地区：[1]郑州大学化学与分子工程学院,河南郑州450000

出　　处：《现代化工》2014年第9期114-117,共4页Modern Chemical Industry

基　　金：国家自然科学基金青年科学基金项目(21201153);教育部留学回国人员科研启动基金项目(教外司留[2013]1792)

摘　　要：应用络合萃取法对生物油加氢水相中的乙酸进行回收,系统地研究了络合剂和稀释剂的种类、络合剂含量对络合萃取效率的影响,以及化学组分不同的生物油加氢水相的络合提取效果.结果表明,选择三辛胺（TOA）为络合剂,异辛醇为稀释剂,络合剂的用量占萃取剂体系体积分数50％～ 60％,萃取剂与水相体积比为1时,对生物油加氢水相中乙酸的提取效率最高达到84.4％.而且发现水相中其他的有机酸,如丙酸、丁酸和苯酚也被提取了出来.经络合萃取处理后,生物油加氢水相的化学需氧量（COD）大大降低,降低了后续水处理成本.A reactive extraction method is used to recover the acetic acid. The influences of types of extractant and diluents,extractant concentration and acetic acid initial concentration on the extraction efficiency are investigated. The results show that acetic acid extraction efficiency can reach 84. 4% under the following conditions ：50% -60% volume ratio of tri-n-octylamine diluted in 2-ethyl-hexanol as the extractant and 1 volume ratio of extractant and aqueous phase. Other organic compounds present in the aqueous phase （propionic acid, butyric acid and phenol） are also co-extracted in the experiment. Furthermore, the COD of the aqueous phase is obviously decreased after extraction treatment, which reduces the subsequent water treatment cost.

关 键 词：生物油 加氢 水相 乙酸 络合萃取 

分 类 号：TQ028.32[化学工程]