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Dyes removal from aqueous solution using egg shell powder | ||
| journal of al-qadisiyah for pure science(quarterly) | ||
| Article 1, Volume 11, Issue 4, 2011, Pages 73-92 PDF (0 K) | ||
| Author | ||
| Beshair j.Kahdim | ||
| Abstract | ||
| This study is concerned with the adsorption isotherms of dyes Fuchsin basic and Birlliant Green, by using Ultra-violet-visible spectroscopy technique, the results showed that the dyes isotherms of Fuchsin basic and Birlliant Green were (L3, S3) according to (Freundlich and Langmuir isotherms Giles classification ). Temperature has been investigated at (298-328k), the results obtained indicate that the adsorption of Fuchsin basic dye, increase with increase of temperature, in the other words, the adsorption process is Endothermic and ΔH is positive, while the adsorption of Birlliant Green decreased with the increase of temperature which means that the adsorption process Exothermic and ΔH in negative . The effect of the acid function was also studied, the results obtained were follows according to the sequence : in the Fuchsin basic PH 7 > 10 > 2 the Birlliant Green PH 3 > 10 > 7 . | ||
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