Abstract
Abstract Despite the progressive decrease in emissions coming from a variety of sources, lead continues to be one of the toxic metals more often found as environmental pollutants. Of particular concern is lead migration through the soil which may result in contamination of water supplies through the leaching caused by water infiltration. Carbonate minerals are frequently found in soils and those of heavy metals are usually insoluble so carbonates in the soil could act as a sink for heavy metals for as long as the environmental conditions guarantee their stability. The influence of soil composition on the fixation of lead from aqueous solutions of this metal has been studied. Two clayey soils with different carbonate content have been used in the tests. The kinetics and equilibrium of retention of lead in the soils under different conditions of pH and salinity have been determined using batch and fixed‐bed column experiments. Carbonate precipitation and ion exchange were the main processes responsible for ...
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Schedule a callMore From: Journal of Environmental Science and Health . Part A: Environmental Science and Engineering and Toxicology
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