Use of water retention curves predicted from particle-size distribution data for simulation of transport of Benzo[a]pyrene in soil

  • Cho Young-A (Graduate School of Environmental Studies, Seoul National University) ;
  • Hwang Sang-Il (Korea Environment Institute) ;
  • Jang Yong-Chul (Division of Civil and Environmental Engineering, Chungnam National University) ;
  • Lee Dong-Soo (Graduate School of Environmental Studies, Seoul National University)
  • Published : 2006.04.01

Abstract

Water retention curve (WRC), one of soil hydraulic properties, is often approximated by property-transfer models (PTMs). Using the PTMs, we can estimate the WRCs from other physical properties such as particle-size distribution (PSD). The objective of this work was to investigate the performance of two PTMs with different origins for numerical simulations on transport of Benzo[a]pyrene in a soil. To do this, we chose both PTMs with different origins, i.e., (1) the lognormal distribution model (L anti NL models), and (2) the modified $Kov\'{a}cs$ model (MK model). The MK model showed tile worse performance in estimation of the WRCs. When transport of B[a]P was simulated, the MK model predicted to move farther than the L and NL models did, indicating that transport of B[a]P in a soil can be greatly influenced by the choice of PTMs.