少孢节丛孢菌对Cd^(2+)的生物吸附作用  

Biosorption of Heavy Metal Ion-Cadmium by Arthrobotrys oligospora

作　　者：何丽芳[1] 杨海[1] 李玉中[1] 王芳宇[1] 

机构地区：[1]衡阳师范学院生命科学系,湖南衡阳421008

出　　处：《贵州农业科学》2013年第9期93-96,共4页Guizhou Agricultural Sciences

基　　金：湖南省教育厅一般项目"少孢节丛孢菌吸附重金属离子效果的研究"(11C0178)

摘　　要：为探明少孢节丛孢菌作为生物吸附剂的吸附效果,采用单因素试验设计,探讨了pH值、吸附剂量、吸附时间、镉离子起始浓度等因素对镉离子吸附效果的影响。结果表明:当溶液pH值为5时,用2g/L的菌体处理浓度为10mg/L的镉离子溶液120min后,吸附率可达78.5%;等温吸附试验表明,少孢节丛孢菌对镉离子的吸附符合Langmuir方程和Freundlich方程,但Langmuir等温吸附方程拟合效果更好。结论:少孢节丛孢菌对镉离子有较高的吸附率,是一种较好的生物吸附剂。In order to explore the adsorption effect of A. oligospora as bio-adsorbent, effect of pH, adsorbent amount, adsorption time, and initial concentrate of Cde＋ on heavy metal Cd2＋ was conducted by single factor design. The results showed that the optimal conditions were solution pH value 5, adsorption time 120 min, adsorbent volume 2.0 g/L, and the initial concentrate with Cd2＋ 10 mg/L, the adsorption efficiency could reach 78.5%. The adsorption pattern of A. oligospora on Cd2＋ was in accordance with Langmuir equation and Freundlich equation, while Langmuir isothermal equation had better fitting effect. It can be concluded that A. oligosiara has higher ndscrntlcm rnte tn （2,d2＋ . nnd ix n desired hln-ndqnrhont

关 键 词：少孢节丛孢菌 镉离子 生物吸附 等温吸附 

分 类 号：S182[农业科学—农业基础科学]