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Study on the Effect of Amphoteric Bagasse Hemicellulose on Heavy Metal Adsorption

文献类型： 外文期刊

作者： Wang, Lijun 1 ; Liu, Xinliang 1 ; Weng, Mengling 2 ; Li, Shuangxi 2 ; Wu, Fusheng 1 ; Li, ZhouJun 1 ; Wang, Shuangfei 1 ;

作者机构： 1.Guangxi Univ, Inst Light Ind & Foodstuff Engn, Nanning 530004, Peoples R China

2.Guangxi Sugarcane Res Inst, Nanning 530007, Peoples R China

关键词： amphoteric bagasse hemicellulose;heavy metal;adsorption;adsorption dynamics;adsorption isotherm

期刊名称：NEW MATERIALS, APPLICATIONS AND PROCESSES, PTS 1-3

ISSN： 1022-6680

年卷期： 2012 年 399-401 卷

页码：

收录情况： SCI

摘要： In this paper, ions i.e. Cu2+, Pb2+ and Cd2+ were absorbed by the amphoteric bagasse hemicelluloses, and the influences of pH value, adsorption time and the initial concentration of metal ion have been studied. The results show that the optimal adsorption pH values for Cu2+, Pb2+ and Cd2+ are 6.5, 6.0 and 7.5, respectively. The adsorption capacity to ions Cu2+, Pb2+ and Cd2+ reaches the maximum values when the adsorption time is 180 min. Net adsorption to ions Cu2+, Pb2+ and Cd2+ increases with increasing the initial concentration of the metal ions. Analysis results of adsorption dynamics show that the adsorption of Cu2+, Pb2+ and Cd2+ follows Ho 's Pseudo second-order kinetics linear model. It can be seen from the adsorption isothermal research that absorption of the amphoteric bagasse hemicelluloses to ions Cu2+, Pb2+ and Cd2+ can be well described by the Langmuir isotherm linear model. Moreover, the theoretical values of the maximum absorption capacity q(max) for ions Cu2+, Pb2+ and Cd2+ were determined to be 21.98 mg/g, 81.97 mg/g and 31.85 mg/g, respectively.

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[1]Study on the Effect of Carboxyl Bagasse Hemicellulose on Heavy Metal Adsorption. Liu, Xinliang,Zhu, Hongxiang,Li, Zhoujun,Lu, Yiguan,Wu, Fusheng,Wang, Shuangfei,Weng, Mengling. 2012

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