Adsorption behaviors of acetaminophen onto sediment in the Weihe River,Shaanxi,China
Adsorption behaviors of acetaminophen onto sediment in the Weihe River,Shaanxi,China作者机构:Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of EducationChang'an University
出 版 物:《International Journal of Sediment Research》 (国际泥沙研究(英文版))
年 卷 期:2015年第30卷第3期
页 面:263-271页
核心收录:
基 金:provided by the National Natural Science Foundation of China(NSFC)(Nos.41072185 and 41372259) the Special Fund for Basic Scientific Research of Central Colleges(Chang'an University,2013G3292016 and 2013G1502037)
主 题:Adsorption Acetaminophen Sediment Kinetics Thermodynamics
摘 要:Adsorption behaviors of acetaminophen onto sediment in the Weihe River were *** impact factors in the processes of adsorption,such as contact time,solution pH,temperature,and ionic strength,were determined by *** experimental results were analyzed by kinetic and isotherm *** adsorption kinetics was found to follow a pseudo-first-order *** equilibrium adsorption data fitted well with the Langmuir and Freundlich isotherm ***,the Langmuir isotherm was more suitable to describe the *** parameters such as Gibbs-free energy change(△C0),enthalpy change(△H0) and entropy change(△S0) were *** showed that the adsorption was feasible,spontaneous,entropy increasing,and endothermic in nature,which reached equilibrium in about 24 *** adsorption capacity did not cause obvious change at solution pH 3.0-9.0,and decreased in solution pH *** presence of electrolytes such as NaCl in aqueous solution had a significant negative effect on the *** mechanisms controlling the adsorption were supposed to be chemisorption.