Experimental investigation of methyl tert-butyl ether dissolution in saturated porous media  

饱和区中MTBE溶解过程研究（英文）

作　　者：李洪 赵雷 高鑫 李鑫钢 

机构地区：[1]School of Chemical Engineering and Technology, Tianjin University [2]Collaborative Innovation Center of Chemical Science and Engineering [3]National Engineering Research Center of Distillation Technology

出　　处：《Chinese Journal of Chemical Engineering》2015年第10期1685-1690,共6页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(41201497)

摘　　要：This study aims to investigate methyl tert-butyl ether(MTBE) dissolution in saturated porous media.A series of1 D column experiments were conducted in laboratory to obtain MTBE dissolution data with different groundwater velocity,initial MTBE saturation and grain size of porous medium,and in the presence of other nonaqueous liquids.Results indicate that higher groundwater velocity increases MTBE dissolution rate and higher initial MTBE saturation reduces effective permeability to slow MTBE dissolution rate.Smaller grain size medium gives higher MTBE dissolution rate because of higher permeability.The addition of trichloroethylene enhances MTBE dissolution,with an optimal mass ratio of 10:2,while the presence of p-xylene prolongs complete dissolution of MTBE.Mass transfer correlations are developed for MTBE dissolution rate based on the degree of MTBE saturation Sn.Mass transfer rate is characterized by Re' with a high exponent for 0.3000<Sn<0.5482,while it is related to medium grain size and Sn for Sn≤0.3000.This study aims to investigate methyl tert-butyl ether（MTBE） dissolution in saturated porous media.A series of1 D column experiments were conducted in laboratory to obtain MTBE dissolution data with different groundwater velocity,initial MTBE saturation and grain size of porous medium,and in the presence of other nonaqueous liquids.Results indicate that higher groundwater velocity increases MTBE dissolution rate and higher initial MTBE saturation reduces effective permeability to slow MTBE dissolution rate.Smaller grain size medium gives higher MTBE dissolution rate because of higher permeability.The addition of trichloroethylene enhances MTBE dissolution,with an optimal mass ratio of 10：2,while the presence of p-xylene prolongs complete dissolution of MTBE.Mass transfer correlations are developed for MTBE dissolution rate based on the degree of MTBE saturation Sn.Mass transfer rate is characterized by Re’ with a high exponent for 0.3000〈Sn〈0.5482,while it is related to medium grain size and Sn for Sn≤0.3000.

关 键 词：MTBE DISSOLUTION Mass transfer Porous media Organic compounds 

分 类 号：O623.423[理学—有机化学]