The impact of organic residues on lead adsorption in two types of calcareous soils

The experiment was conducted in the laboratories of the University of Agriculture in Basra University. The study included investigating the behavior of lead adsorption in soil samples at equilibrium conditions and factors affecting adsorption by organic residues (animal and plant) Soil samples were taken from two different locations in Basra State (Al-Zubair and Kutayban). A laboratory experiment was conducted in which five volumes of mg L -1 of lead (20-40-80-160-200) were added to each soil sample, with three modified for the Langmuir and Freundlich equations of the adsorption system was used to describe the nature of lead adsorption in the soil sample under investigation. The study concluded that the rate of adsorption increased with increasing amount of lead added, and the change in soil adsorption capacity was responsible for differences in chemical and physical properties of experimental soil of the species, represented by calcium carbonate concentration, organic matter, clay content and type, pH, and ionic strength. EDN: OIJERN