改性麦壳对水中苯酚的生物吸附作用  

Biosorption Behavior for Phenol from Aqueous Solution Using Modified Wheat Shell in Batch mode

作　　者：张敬华[1] 崔运启[1] 高利[1] 刘彩琳[1] 

机构地区：[1]黄淮学院化学化工系,驻马店463000

出　　处：《化学通报》2013年第8期753-757,共5页Chemistry

基　　金：河南省科技攻关项目(122102310476;112102210381)资助

摘　　要：通过对农业副产物麦壳进行甲醛甲酸甲基化改性,研究了改性后麦壳对苯酚的吸附情况,讨论了吸附时间、吸附剂用量、初始浓度、温度及pH等条件对吸附效果的影响。结果表明,改性后的麦壳对苯酚的吸附反应迅速,随着吸附剂用量增加,吸附量增大;增大初始浓度,吸附量升高;升温对反应不利;酸性条件下有利于吸附。改性后的麦壳对苯酚的吸附符合Langmuir和Freundlich等温模型。改性麦壳可用于苯酚的去除。Wheat shell, an agricultural by-product, was modified using formaldehyde formic acid methylation. It was used as adsorbent to evaluate the removal of phenol from aqueous solution. The effects of several factors, sueh as eontact time, adsorbent dosage, initial phenol concentration, temperature and pH on adsorption quantity were investigated. The results showed that the adsorption process was fast and adsorption quantity became larger as increasing of initial phenol concentration. The rise of temperature is not favorable for the adsorption process; however, acidic condition is propitious to the adsorption. The equilibrium data can be fitted by Langmuir model and Freundlich model well. The results implied that modified wheat shell can be used as adsorbent material to remove phenol from aqueous solution.

关 键 词：生物吸附 麦壳 化学改性 苯酚 

分 类 号：X703[环境科学与工程—环境工程]