Biosorption of cadmium(Ⅱ) from aqueous solutions by industrial fungus Rhizopus cohnii

作     者：罗金明 肖潇 罗胜联 

作者机构：Faculty of Life Science and TechnologyCentral South University of Forestry and Technology College of Environmental Science and EngineeringHunan University Key Laboratory of Environmental Biology and Pollution Control of Ministry of EducationHunan University State Key Laboratory of Chemo/Biosensing and ChemometricsHunan University 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2010年第20卷第6期

页      面：1104-1111页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：Project(50830301) supported by the National Natural Science Foundation of China Project(50725825) supported by the National Science Fund for Distinguished Young Scholars of China 

主　　题：biosorption Rhizopus cohnii biosorbent cadmium 

摘      要：An important filamentous industrial fungus,Rhizopus cohnii(***),was used as an efficient biosorbent for removing cadmium from *** sorption conditions,such as pH,the dose of biomass and the initial concentration of cadmium were *** kinds of adsorption models were applied to simulate the biosorption *** uptake of cadmium was higher in weak acid condition than in strong acid *** no sorption of cadmium occurred when the pH value was lower than 2.0. Biosorption isothermal data could be well simulated by both Langmuir and Freundlich *** simulation of the biosorption showed that the maximum uptake of cadmium was 40.5 mg/g(0.36 mmol/g)in the optimal conditions,which was higher than many other adsorbents,including biosorbents and activated *** addition,the reusability results showed that after five times of sorption and desorption process,the sorption capacity of *** could still maintain nearly 80%,confirming its practical application in cadmium *** transform infrared spectrum revealed that carboxyl,amino and hydroxyl groups on biosorbent *** surface were responsible for the biosorption of cadmium.