الفهرس 
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Abstract
The effectiveness of adsorption for dye removal from wastewaters has made it an ideal alternative to other expensive treatment methods and the adsorption process is very fast and is physical in nature. In view of these facts, I was investigated in this thesis to determine the effects of condition such as initial concentration (25 to 125 mg/l), pH (2 to 11), temperature (25 to 60 oC) adsorbent dose (0.25 to 1.5 gm/l) and particle size (0.05 to 0.5 mm) have been investigated, using a batch adsorption technique to obtain information on treating effluents from the dye industry. The adsorption properties of aqueous solution of methylene blue (MB), on CSP, has been investigated by means of UV–Visible spectroscopy. The results showed that CSP was effective, for which the removal reached 92 % Methylene Blue at 25ºC. Adsorption of Methylene Blue was highly pH-dependent, the optimum pH for the removal was found to be (5-9) and at which MB exists mostly as the most easily adsorbed form aqueous solution increases as the initial MB concentration. Also increasing temperature, smaller adsorbate particle were found to increase the percentage removal of MB, for which the removal reached 95.2 % Methylene Blue at 60ºC. The results of this study show that the Adsorption of MB on CSP fits the BET model, corroborating the assumption of that the adsorbate molecules could be adsorbed in more than one layer thick on the surface of the adsorbent material. A comparison of kinetic models (pseudo first-order, the pseudo second-order, Elovich and intraparticle diffusion kinetic models) at different conditions showed that the pseudo second-order kinetic model correlate the experimental data well.