Factors affecting phenol adsorption on clay-solidified grouting curtain  

作　　者：陈永贵 叶为民 张可能 

机构地区：[1]State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences [2]School of Civil Engineering and Architecture,Changsha University of Science and Technology [3]Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,Tongji University [4]School of Geosciences and Environmental Engineering,Central South University

出　　处：《Journal of Central South University》2011年第3期854-858,共5页中南大学学报（英文版）

基　　金：Project(40802064) supported by the National Natural Science Foundation of China;Project(Z110805) supported by the Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences; Project(200925) supported by the Progress and Innovation Fund for the Transportation Science and Technology of Hunan Province,China

摘　　要：Batch experiments were conducted to study the adsorption of phenol on clay-solidified grouting curtain (CSGC) and the effects of contact time,pH and adsorbent concentration on the adsorption were investigated.Under the experimental conditions used,2 d was adequate to determine the equilibrium of phenol adsorption onto CSGC.The amount of phenol adsorbed by CSGC from an initial concentration of 100mg/L was found to be 8.4mg/g.The adsorption process includes particle diffusion and liquid film diffusion,and the latter is the predominating step of the adsorption process.The adsorption ability of CSGC decreased with pH but it increased non-linearly with the CSGC concentration.The optimized concentration for CSGC was found to be 20g/L for the adsorption of 100mg/L phenol.Batch experiments were conducted to study the adsorption of phenol on clay-solidified grouting curtain （CSGC） and the effects of contact time, pH and adsorbent concentration on the adsorption were investigated. Under the experimental conditions used, 2 d was adequate to determine the equilibrium of phenol adsorption onto CSGC. The amount of phenol adsorbed by CSGC from an initial concentration of 100 mg/L was found to be 8.4 mg/g. The adsorption process includes particle diffusion and liquid film diffusion, and the latter is the predominating step of the adsorption process. The adsorption ability of CSGC decreased with pH but it increased non-linearly with the CSGC concentration. The optimized concentration for CSGC was found to be 20 g/L for the adsorption of 100 mg/L phenol.

关 键 词：clay-solidified grouting curtain ADSORPTION PHENOL effective factors 

分 类 号：TU472.5[建筑科学—结构工程]