الفهرس 
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Abstract
Oil shale is a sedimentary rock including the organic matter that yields considerable amounts of oil and combustible gas upon distillation. The present study is focused onthe efficiency of spent oil shale to remove the methyl red (MR) from an aqueous solution under different conrtditions. The adsorption kinetics were measured via thepseudo-first-order and pseudo-second-order models. The results showed that the amount of dye removed from the solution increased by the increase in the level of adsorbent dosage. The thermodynamic factors ΔG,ΔH, and ΔS were studied from the results obtained it is found that the reaction is non-spontaneous at low temperature but at high temperature become spontaneous The majority of the dye was adsorbed in 90 min. Pseudo-first-order model is followed. The character of the treated oil shale wasexamined by different analytical methods such as energy-dispersive X-ray spectroscopy(EDX), Fourier-transform infrared spectroscopy (FTIR), and electronic scanning microscopy (SEM). The treated oil shale appeared high adsorption capacity against MR in polluted wastewater.