Transport of ions in quartz sand

摘要: Contamination of environment with heavy metals is widely increasing due to their industrial applications development. Cr used as daily basis in i.e. the metallurgic, tanning, and plating industries [1]. (III), which more environmentally stable, considered be less mobile than toxic (VI) [2]. Decreased mobility (III) contributed strong adsorption onto negatively charged surfaces ability form complex molecules organics well formation oxides hydroxides other insoluble minerals soils [3]. Concentration lead has increased during last sixty years mainly because its use antiknock additives petroleum. In ionic forms have been found most persistent [4]. Nickel concern many parts world. The concentration nickel very high, especially near metal refineries dry sludges [5]. Deposits naturally existing are complex. Therefore studies on simple systems so important. Results presented below were received from one-dimensional studies. However pH changes measured only along main axis tested deposit overall concentrations measured. This allowed for observing differences movement under investigated conditions susceptibility these conditions.