Solubilization and degradation of perchloroethylene (PCE) in cationic and nonionic surfactant solutions

作     者：Sivaram Harendra Cumaraswamy Vipulanandan 

作者机构：Department of Energy National Energy Technology Laboratory Civil and Environmental Engineering University of Houston N107 Engineering Bldg. 1 Houston TX 77204 USA 

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

年 卷 期：2011年第23卷第8期

页      面：1240-1248页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the Center for Innovative Grouting Materials and Technology (CIGMAT) at the University of Houston with funding from the Texas Hazardous Waste Research Center and Texas Higher Education Coordinating Board (THECB) 

主　　题：Fe-Ni particles perchloroethylene (PCE) solubilization degradation 

摘      要：Solubilization of perchloroethylene （PCE） in a nonionic （Triton X-100） and a cationic （cetyltrimethylammonium bromide （CTAB）） surfactant solutions and the degradation of surfactant solubilized PCE using fine to nanosize Fe and bi-metallic Fe-Ni particles were investigated. Micelle partition coefficients （Kin） and molar solubility ratio （MSR） for PCE in 10 g/L of surfactant solutions have been quantified and the solubility of PCE （100 mg/L in water） in the surfactant solutions increased by about ten fold, Of the two suffactants studied, Triton X-100 solubilized the higher amount of PCE per gram of suffactant. To degrade solubilized PCE, both iron and bimetallic Fe-Ni particles were used in continuously stirred batch reactors. The iron and hi-metallic particles were synthesized using the solution method and the particles were characterized using the SEM, EDS, TEM and XRD. The PCE solubilized up to 500 mg/L in both surfactant solutions were totally degraded at various rates by 200 g/L of hi-metallic Fe-Ni particles in less than 20 hr, which is the highest concentration of PCE degraded in the shortest time compared to data in the literature. The degradations of PCE solubilized in surfactant solutions were represented by nonlinear kinetic relationships which depended on the type of surfactant used for solubilizing the PCE.