%0 Journal Article
%T Kinetics and equilibrium of biosorption of Cd2+,Cu2+,Pb2+,Zn2+ by macrofungus(Auricularia polytricha) biomass<br>毛木耳对Cd2+、Cu2+、Pb2+、Zn2+生物吸附的动力学和吸附平衡研究
%A JIANG Xinyu
%A HUANG Haiwei
%A CAO Lixiang
%A ZHANG Renduo
%A <br>蒋新宇
%A 黄海伟
%A 曹理想
%A 张仁铎
%J 环境科学学报
%D 2010
%I 
%X Using Auricularia polytricha as a biosorbent, we studied the effects of different factors, including contact time, pH, and heavy metal concentrations, on adsorption of Cd2+, Cu2+, Pb2+, Zn2+ by the biosorbent. Results showed that pH was the most influent factor for the biosorption. The optimum initial pH value was 5 for the maximum adsorption. With metal concentrations of 10 mg L-1, the maximum removals of Cd2+, Cu2+, Pb2+, Zn2+ by A. polytricha were 94.12%, 96.22%, 99.94%, and 99.19%, respectively. The pseudo-second-order kinetics model was better to characterize the biosorption processes of the metals than the pseudo-first-order kinetics model. Langmuir isotherm model was used to fit the equilibrium data successfully. The maximum biosorption capacities of A. polytricha were 10.09, 8.36, 23.57, and 3.64 mg g-1, respectively, for Cd2+, Cu2+, Pb2+, Zn2+. Ion exchange may be the main mechanism for the biosorption of Cd2+, Cu2+, Zn2+ by the biosorbent.
%K heavy metals
%K biosorption
%K Auricularia polytricha
%K kinetic models
%K isotherms model<br>重金属
%K 生物吸附
%K 毛木耳子实体
%K 动力学模型
%K 等温吸附模型
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=B2B0728FB225AA6251E5F31FC888E140&yid=140ECF96957D60B2&vid=340AC2BF8E7AB4FD&iid=DF92D298D3FF1E6E&sid=0407E07CB2FA770D&eid=5A66347DEC1DE6F4&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=1&reference_num=33