title: A study for evaluation of contaminant transport characteristics through fine-grained soil.
abstract: Transport of soluble toxic substances through porous media lead to some significant geoenvironmental problems, for example, leachate migration from municipal and industrial solid waste resulting from unregulated disposal. Advection, dispersion, diffusion, and decay are reported to be the principal mechanisms in such phenomena. Geotechnical properties of the soil also play a significant role in this deterioration. In the present study, laboratory tests were conducted to formulate an appropriate method for assessment of migration of metal ions, such as nickel, through the soil. Relevant kinetic and process parameters, such as aquifer data, surface area, dielectric constant, pH of zero point charge (pHzpc), and permeability were also studied. One-dimensional mathematical modeling was used to describe the dynamics of the process. The present investigation was carried out at an ash pond site of a thermal power plant situated in West Bengal, India.
authors.affiliation: Solid Waste Management Division, National Environmental Engineering Research Institute, Nagpur, India. sunil_neeri@yahoo.co.in
authors.forename: Sunil
authors.initials: S
authors.lastname: Kumar
authors.forename: S N
authors.initials: SN
authors.lastname: Mukherjee
authors.forename: S
authors.initials: S
authors.lastname: Ghosh
authors.forename: R
authors.initials: R
authors.lastname: Ray
mesh_terms: D004784:Environmental Monitoring / Q000295:instrumentation / Q000379:methods; D004787:Environmental Pollution / Q000032:analysis; D006863:Hydrogen-Ion Concentration; D019216:Metals, Heavy / Q000032:analysis*; D008962:Models, Theoretical; D009532:Nickel / Q000032:analysis; D012987:Soil / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis; D014873:Water Pollutants / Q000032:analysis
chemical_list: D019216:Metals, Heavy; D012987:Soil; D012989:Soil Pollutants; D014873:Water Pollutants; D009532:Nickel