الفهرس 
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Abstract
The aim of this study is to take advantage of some agricultural waste, ”pith bagasse, rice straw and corn stalks” to remove the oil spill. Bagasse and rice straw is one of the wastes of sugar & rice, industries respectively, and for the corn stalk it is considered as waste of corn cultivation.Properties of these agricultural wastes were specified using a scanning electronic microscope to show the exterior and interior, and to clarify the properties of the surface, the wrinkles and pores which allow penetration of oil or dye molecules, and also the cross¬section; as well as the use of an infrared spectroscopy to identify the functional groups affecting the absorption of oil and water and dye, and finally identify the nature of these molecules using X-ray it was found that these agricultural wastes have a crystalline stmcture.Experiments were canied out on raw agricultural wastes to study the oil sorption efficiency from water in the framework to simulate field conditions. Number of factors has been changed to study their impact on the efficiency of sorption like particle size, time of sorption, oil film thickness, temperature, weight of agriculture wastes. It was found that the best conditions are for the particle size equal to 0.7 mm for bagasse and rice straw and of particle size equal to 0.9 mm for corn stalk at sorption time equal to 15 minutes for pith bagasse and rice straw for all types of oil and for corn stalk the sorption time equal to 25 minutes and 15 minutes for seven days and one day weathered oil and oil layer thickness equal to 5 mm. Experiments were canied out on raw agricultural waste to study the dye adsorption efficiency from water in the framework to simulate field conditions. Number of factors has been changed to study their impact on the efficiency of sorption like particle size, adsorption. time, initial dye concentration, temperature, weight of adsorbent and the pH of the solution.It was found that the best conditions to be grains of equal size for 1.8 mm for both the waste of farm at the time of absorption is equal to 120 minutes and at a size of 0.5 g of agricultural waste. Batch kinetics studies were conducted by using kinetic equations (Lagergren and Ho et al) and batch isothenn studies was conducted by using isothenn models (Langmuir, Freundlich, Tempkin, Dubinin- Radushkevich and Hal’kin-Jura isothenn). The equiliblium data were examined by two well-known adsorption isothenn models, namely, Langmuir, Freundlich, Tempkin, Dubinin- Radushkevich and Harkin-Jura isothenn niodels.The adsorption data exhibited a better fit to Harkin-Jura and Temkin models. This indicates that the adsorption reaction is endothennic and multilayer adsorption and can be explained by the existence of a heterogeneous pore distribution. The intrapalticle diffusion model was applied to understand the mechanism of MB adsorption. from the experimental results it was detennined that intrapalticle diffusion is not the only rate controlling step and other processes may also be occuning simultaneously.