Author(s)

H.R. Khan & T. Adachi

Abstract

Laboratory column-leaching experiments were carried out by using soil sediments to evaluate the influence of soil microorganisms (SMO), duration of oxidation, rainfall and groundwater on the development of soil acidity and associated ion dynamics in the soils and percolating solutions. The soil contained 6.5 g kg* pyrite, 43 g kg* organic carbon and had pH 8.0 (sticky). The development of soil acidity at > 150 % water (40± 2 % air v.) contents was mainly controlled by SMO but below 150 % water content and/or beyond the pH range of 3.5 to 5.8, it depends mainly on chemical oxi

Keywords