Numerical simulation of PAHs sorption/desorption on soil with the influence of Tween80

作     者：CHEN Jing WANG Xue-jun HUJun-dong XU Fu-liu TAO Shu 

作者机构：College of Environmental Science MOE Laboratory of Earth Surface Process Peking University Beijing 100871 China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2006年第18卷第4期

页      面：716-720页

核心收录：

学科分类：12[管理学] 1204[管理学-公共管理] 082803[工学-农业生物环境与能源工程] 08[工学] 0828[工学-农业工程] 120405[管理学-土地资源管理] 

基　　金：TheNationalBasicResearchProgramofChina(No.2003CB415004)andtheNationalNaturalScienceFoundationofChina(No.40371105 40525003 40332015) 

主　　题：Tween80 PAHs soil sorption/desorption γ model 

摘      要：In this paper, the influences of inionic surfactant Tween80 on polycyclic aromatic hydrocarbons （PAHs） sorption/desorption on artificially contaminated soil were studied, and γ model was applied to simulate the influences. Results showed that, with the use of Tween 80, the sorption behaviors of PAHs on soil altered significantly. Adsorbed Tween 80 increased the sorption amount of PAHs while the dissolved Tween80 increased the apparent solubility of PAHs. These two processes exert influences on the sorption coefficient of PAHs in soil-water system, which can be depicted by apparent sorption coefficient. The partition coefficients （the soil/water partition coefficient of PAHs and surfactants obtained fxom sorption experiments） and statistical parameters used in the amended γ model were obtained in independent experiments. With these parameters, the γ model could provide a satisfactory independent prediction of PAHs release from soil to aqueous phase at two surfactant concentrations.