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.
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
