The objective of this study is to quantify the effects of humic acid solution infiltration on the transport of organochlorine pesticides (OCPs) in soil columns using a three-phase transport model. From experimental results, it is found that the dissolved organic carbon enhances the transport of OCPs in the soil columns. In the OCPs-only column, the concentration profiles of OCPs can be simulated well using a two-phase transport model with numerical method or analytical solution. In the OCPs-DOC column, the migrations of aldrin, DDT and its daughter compounds are faster than those in the OCPs-only column. The simulation with the three-phase model is more accurate than that with the two-phase model. In addition, significant decrease of the fluid pore velocities of the OCPs-DOC column was found. When DOC leachate is applied for remediation of soil or groundwater pollution, the decrease of mean pore velocities will be a crucial affecting factor.
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Research Article| April 01 1997
Transport of organochlorine pesticides in soil columns enhanced by dissolved organic carbon
Water Sci Technol (1997) 35 (7): 139–145.
Jiann-Yuan Ding, Shian-Chee Wu; Transport of organochlorine pesticides in soil columns enhanced by dissolved organic carbon. Water Sci Technol 1 April 1997; 35 (7): 139–145. doi: https://doi.org/10.2166/wst.1997.0270
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