VOC removal from contaminated groundwater through membrane pervaporation. (Ⅰ): Water-1,1,1-trichloroethane system  

作　　者：Sean LIU 

机构地区：[1]Department of Food Science, Rutgers University

出　　处：《Journal of Environmental Sciences》2003年第6期815-820,共6页环境科学学报（英文版）

摘　　要：trichloroethane(TCA), a common chlorinated organic solvent and volatile organic compound(VOC), was removed from contaminated groundwater by using a bench-scale membrane pervaporation unit. The effects of TCA concentration, temperature, and flow rate on permeation flux and selectivity(α value) of the process were evaluated. In general, higher temperature leads to higher VOC flux but lower selectivity; higher flow rate of TCA feed stream results in higher VOC flux and selectivity, an indication of the effect of concentration polarization; higher TCA feed concentration produces higher TCA permeation, however, the selectivity was virtually unchanged.trichloroethane(TCA), a common chlorinated organic solvent and volatile organic compound(VOC), was removed from contaminated groundwater by using a bench-scale membrane pervaporation unit. The effects of TCA concentration, temperature, and flow rate on permeation flux and selectivity(α value) of the process were evaluated. In general, higher temperature leads to higher VOC flux but lower selectivity; higher flow rate of TCA feed stream results in higher VOC flux and selectivity, an indication of the effect of concentration polarization; higher TCA feed concentration produces higher TCA permeation, however, the selectivity was virtually unchanged.

关 键 词：PERVAPORATION VOCS groundwater remediation 1 1 1-trichloroethane 

分 类 号：X523[环境科学与工程—环境工程]