Mercury Adsorption-Desorption and Transport in Soils.

Autor: Lixia Liao, Selim, H. M.1 mselim@agctr.lsu.edu, DeLaune, R. D.1
Předmět:
Zdroj: Journal of Environmental Quality. Jul/Aug2009, Vol. 38 Issue 4, p1608-1616. 9p.
Abstrakt: The article discusses research investigating the adsorption-desorption of mercury (Hg) and its transport in soil. The team performed kinetic sorption and column miscible displacement transport experiments to quantify the mobility of Hg in varying soil types and its retention/release in each. The adsorption of Hg was rapid and nonlinear with sorption capacities following a specific sequence of soil types from Sharkey clay to Olivier loam to Windsor sand. The removal of soil organic material decreased Hg adsorption in all of the soils. The team used a nonlinear Freundlich model to describe the adsorption with limited success. Results from the transport experiments indicated that the mobility of Hg was hindered and highly immobile in all the soils investigated.
Databáze: GreenFILE