海泡石/黄原胶复合絮凝剂的制备及应用研究  

Preparation and application of sepiolite/xanthan gum compound flocculant

作　　者：诸晓锋[1] 苏秀霞[1] 杨祥龙[1] 程磊[1] 李铭杰[1] 郝明德[2] 李仲谨[1] 张超武[1] 

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安710021 [2]中国科学院水利部水土保持研究所,陕西杨凌712100

出　　处：《应用化工》2009年第9期1241-1244,共4页Applied Chemical Industry

基　　金："十一五"国家科学技术支撑计划项目(2006BAD09B04);陕西省科技计划项目(2008K06-15);陕西科技大学研究生创新基金项目

摘　　要：以过硫酸钾为引发剂,使丙烯酸/丙烯酰胺在黄原胶(XG)分子链上接枝聚合并复合海泡石纤维制备复合絮凝剂。研究了反应条件对含油废水COD去除率及浊度去除率的影响,利用红外光谱(FTIR)对接枝产物进行表征。实验结果表明,最佳合成条件为:m(丙烯酸/丙烯酰胺)∶m(黄原胶)=8∶1,引发剂、交联剂与黄原胶质量比分别为0.02,0.006,m(海泡石)∶m(黄原胶)=1∶2,反应温度60℃,用该絮凝剂处理含油废水,COD去除率和浊度去除率分别达到88.2%和95.6%。A compound flocculant was prepared using acrylic acid/acrylamide grafted polymerization onto the xanthan gum（XG） with sepiolite fiber, initiated with potassium persulfate. The influence of the reaction conditions on COD removal rate and turbidity removal rate were discussed. The compound floceulant structure was characterized by infrared spectroscopy （FTIR）. The experimental results showed that the optimum condition of grafting reaction was that mass ratio of AA/AM to XG was 8 ： 1, the mass ratio of the initiator and the crosslinking reagent to xanthan gum was 0.02 and 0.006 respectively, mass ratio of sepiolite to XG was 1 ： 2 ,the reaction temperature was 60℃. Using this flocculant to treat oil wastewater, the COD removal rate and turbidity removal rate were 88.2% and 95.6% respectively.

关 键 词：黄原胶 海泡石 复合絮凝剂 COD去除率 浊度去除率 

分 类 号：O63-0[理学—高分子化学] X52[理学—化学]