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Decolorization of Astrazon Green M from Aqueous Solution by Bauxite and Kaolin Materials | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 19, Issue 2, 2008, Pages 69-80 | ||
| Authors | ||
| ; | ||
| Abstract | ||
| The adsorbents bauxite and light kaolin were used for the sorption of textile dye named astrazon green M from aqueous solutions . The effect of temperature, initial dye concentration and equilibrium time of sorption of dye were studied, the equilibrium adsorption isotherms have been investigated by the Freundlich and Langmuire models . The basic thermodynamic data were obtained with a thermostatic bath shaker at five deferent temperatures (25,35,45,55 and 65 oC) . The apparent thermodynamic parameters were calculated and the obtained values show the adsorption process of dye solutions on bauxite surface is exothermic in nature . But on kaolin is endothermic in nature ,and the small mean energy values for the adsorption of astrazon green M on bauxite and kaolin shows the type of adsorption is physical in nature. | ||
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