微波制备有机膨润土用于生化中药废水处理尾水脱色的试验  

Decolorization of Herbal Medicine Wastewater in Bio-Treatment with Organobentonites

作　　者：唐艳葵[1] 童张法[1] 李仲民[1] 王孝英[1] 梁达文[2] 

机构地区：[1]广西大学化学化工学院,南宁530004 [2]玉林师范学院化学与生物系,广西玉林537000

出　　处：《桂林工学院学报》2007年第3期382-385,共4页Journal of Guilin University of Technology

基　　金：广西自然科学基金资助项目(桂科基0448085);广西大学科研基金资助项目(X051008)

摘　　要：利用长碳链季铵盐阳离子表面活性剂(十六烷基三甲基溴化铵,CTMAB)在微波辐射条件下对以广西宁明膨润土制得的钠基膨润土进行改性,得到有机膨润土.利用其对经生化处理后的中药废水尾水进行脱色处理,考察了不同的工艺条件如吸附时间、膨润土投加量、反应温度、pH值对中药废水脱色效果的影响.结果表明:pH对脱色效果有影响,体系以物理吸附为主.当吸附剂用量为3.5 g/L、吸附时间为25 m in、吸附温度为32℃,不调节pH值,经生化处理后的中药废水尾水脱色率可达97%,且其吸附脱色能力大于活性炭.Organobentonite （MOB） is synthesized under the radiation of microwave by CTMAB and sodium bentonite modified from Ningming bentonite. The organobentonite is used for the deeolorization of the effluent （dark brown color） from the bio-treatment process. Effects of adsorbent dosage, temperature, pH and adsorption time on decolorization of the wastewater sample are investigated. The results show that the pH can affect the adsorption and the physical adsorption is dominant. The decolorization percentage is over 97% under the content of MOB 3.5 g/L, contact time 25 min, temperature 32 ℃ with nature pH. In the comparative test MOB adsorption capacity is better than active carbon.

关 键 词：有机膨润土 中药废水 吸附 脱色 

分 类 号：X787.031[环境科学与工程—环境工程]