Reproduction of breakthrough curves for reactive transport experiment in the heterogeneous seepage tank by use of Continuous Time Random Walk (CTRW)

Abstract

BTCs (Break Through Curves) obtained with 2-dimensional reactive transport experiments in heterogeneous infiltration field were reproduced by CTRW (Continues Time Random Walk). General form and tailing of Mono-peak BTCs were well reproduced by CTRW. Parameter for the degree of anonymous dispersion，β were in the range of 0.8<β<2.0. It means obtained BTCs were close to realistic anonymous dispersion occurred in porous media. Multi-peak BTCs are corresponding to multiple flow paths. In this case, each curve should be fitting with CTRW, individually.