Biosorption of Direct Black 38 by dried anaerobic granular sludge  

作　　者：Xuejiang WANG Siqing XIA Jianfu ZHAO 

机构地区：[1]State Key Laboratory of Pollution Control and Resources Reuse,College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China

出　　处：《Frontiers of Environmental Science & Engineering》2008年第2期198-202,共5页环境科学与工程前沿（英文）

基　　金：This study was financially supported by the Specialized Research Fund for the Doctoral Program of Higher Education of Ministry of Education,China(Grant No.20050247016);China Everbright Environment Innovation Fund(Grant No.200709).

摘　　要：The biosorption of Direct Black 38 by dried anaerobic granular sludge in a batch system under specific temperatures and initial pH was investigated.The adsorption reaction is pH dependent with higher removal at low pH.The adsorption equilibrium data fit very well with both Langmuir and Freundlich models in the concentration range of Direct Black 38 at all chosen temperatures.The adsorption parameters show that the adsorption of Direct Black 38 is an endothermic and more effective process at high temperatures.The kinetics of adsorption was found to be second order and adsorption rate constants increased with increasing temperature.Activation energy was determined as 26.8 kJ/mol for the process.This suggests that the adsorption of Direct Black 38 by dried anaerobic granular sludge is chemically controlled.

关 键 词：BIOSORPTION KINETICS adsorption isotherms anaerobic granular sludge 

分 类 号：X70[环境科学与工程—环境工程]