Roles of cation valance and exchange on the retention and colloid-facilitated transport of functionalized multi-walled carbon nanotubes in a natural soil
The retention of MWCNTs in soil was sensitive to solution IS and cation type. Both breakthrough curves and retention profiles were determined and simulated by HYDRUS 1D. The release of soil colloids and MWCNTs with IS reduction and cation exchange was investigated. The association of soil colloids and MWCNTs was determined by soil fractionation. A large amount of MWCNTs was associated with water-dispersible colloids.