廉价生物吸附剂的制备及其对刚果红吸附研究  

Preparation of Low Cost Biosorbent and Its Biosorption Properties for Congo Red from Aqueous Solution

作　　者：席宇[1] 王喜凤[1] 宿显瑞 杨高举[1] 杨帆[1] 朱大恒[1] 

机构地区：[1]郑州大学生物工程系,河南郑州450001 [2]河南省中原建设有限公司,河南郑州450000

出　　处：《郑州大学学报（理学版）》2013年第1期81-85,共5页Journal of Zhengzhou University:Natural Science Edition

基　　金：河南省烟草专卖局科技攻关项目;编号HYKJ201021;全国大学生创新创业训练计划项目;编号121045946

摘　　要：利用烟草废水(tobacco wastewater,TWW)培养青霉菌LY7获取菌丝体,以灭活菌丝体为材料制备廉价真菌吸附剂PLYB.研究了PLYB的表面特征及其对水溶液中刚果红(Congo Red,CR)的吸附行为,考察了PLYB加入量、温度、pH、吸附时间、染料初始浓度等因素对CR吸附效果的影响.结果表明,PLYB对CR的吸附过程符合Langmuir吸附等温式,吸附过程可用准二级动力学模型较好的描述.根据Langmuir吸附等温线,30℃和pH 6.8条件下PLYB对CR的最大吸附量可达312.5 mg/g.A low cost biosorbent PLYB was prepared from the inactive biomass of fungus Penicillium LY7,which was capable of utilizing tobacco wastewater as a substrate without any addition of nutrients.The characterization of the biosorbent surfaces,biosorption kinetics,isotherm models and the effects of various experimental factors were investigated.The kinetics and equilibrium biosorption were well described by pseudo-second-order kinetic and Langmuir isotherm model,respectively.According to the Langmuir model,the maximum biosorption capacity of Congo Red was 312.5 mg/g at 30 ℃ and pH 6.8.

关 键 词：生物吸附剂 烟草废水 表征 刚果红 吸附量 

分 类 号：X172[环境科学与工程—环境科学]