الفهرس 
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Abstract
Application of the adsorption process of agricultural residues (rice husk) and industrial residues (tea waste) for the processing of heavy metals is of much interest. This method is more economical, environmentally friendly, and simple to remove heavy metals from effluents. The study was conducted to explore the efficiency of the adsorption process by using rice husk to remove lead and chromium from industrial wastewater.In this work, an agricultural residue (rice husk) and an industrial residue (tea waste) were also selected, a heavy element (lead) and (chromium) were selected for experiments on them for the process of adsorption of heavy elements on the surfaces of the absorbed materials to remove the remnants of heavy elements from the water to use water for other purposes, and to do this, the residues were equipped according to the nature of each residue, and also several concentrations of heavy elements (ppm) were prepared and an analysis was made to find out the content of cellulose, lignin and hemicellulose in Both residues and the percentage of fiber was higher in the residue of rice husk than the brews of tea waste The factors affecting the adsorption process were studied from the concentration of the element and also the concentration of adsorption material, temperature and the speed of shaking, where the results showed that the rice husk were higher in the process of absorbing the elements compared to the remnants of tea waste, and also the absorption of lead is higher than the absorption of chromium, as well as for the factors that affect the adsorption process, the best results for the rice husk were concentrated 2% The concentration of the element is 100 (ppm) and the speed of shaking is 100 rpm in a minute and the contact time is 30 minutes, as for the brewed dregs of tea, the best results were when using the pulpa of tea grounds, concentration of 3%, the concentration of the element is 100 ppm, the speed of shaking is 125 rpm in a minute, and the contact time is 45 minutes. A study of the mechanics of the adsorption process was carried out using. Lieberman adsorption equation, where a group of samples containing minerals at a concentration of 100 ppm and the addition of residues (rice husk and tea waste) in different concentrations (0.5 - 2.0 g) were applied in Lieberman equation. The use of tea waste and rice husk is very effective in the process of absorption of minerals under study (lead, chromium). Results were confirmed through microscopy before and after the adsorption process, as well as infrared analysis to identify the active groups responsible for binding to the element.