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Article
Study the Adsorption of Yellow (W6GS) dye from Aqueous Solutions by using Attapulgite Clay

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Abstract

Abstract The study is concerned with the adsorption of terasil yellow (W-6GS) dye from aqueous solution by using attapulgite clay , where the effects of initial concentration of dye, pH and the equilibrium contact time, were investigated, also studies the effect of acid, base and salt concentrations on the adsorption process. Isotherm of it’s adsorption was measured.

الخلاصة في هذه الدراسة تم استخدام طين الاتابلكايت كمادة مازة لصبغة terasil yello(W-6GS) المنتشرة من محاليلها المائية حيث تضمن البحث تعيين زمن الاتزان ودراسة تأثير كل من الدالة الحامضية وكذلك تأثير تركيز ونوع الحامض والقاعدة والاملاح على عملية الامتزاز ، كما تم قياس ايزوثيرم الامتزاز .


Article
Adsorption Study For Removal Of Rhodamine 6G From Aqueous Solutions By Using Iraqi Attapulgite And Flint Clays

Authors: Sadiq .J. Baqir --- Zahraa. H. Athab --- Suaad. T. Saad
Journal: Journal of University of Babylon مجلة جامعة بابل ISSN: 19920652 23128135 Year: 2013 Volume: 21 Issue: 5 Pages: 1854-1861
Publisher: Babylon University جامعة بابل

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Abstract

In this study attapulgite (AT) and filnt (FLN) clays are used as low cost adsorbents for adsorption of (R(6G)) in aqueous solution, and the factors affecting the adsorption process were studied, including the effect of pH which shows increase with increase of pH values to all clays in this study .The effect of equilibrium time was also studied and it was found that the best time was at (30 minutes) for (AT) , (40 minutes) for (FLN), then the effect of clay weight was studied , The results indicate that the percentage removal at equilibrium for (R(6G)) by using (AT) and (FLN) clay were 88% and 85% respectively. The adsorption isotherm was found to be similar to S-shape according to Gilles classification, and that obeys Freundlich isotherm model.

في هذه الدراسة تم استخدام طين الاتبلغايت وطين الفلنت كمواد امتزاز رخيصة لامتزاز (R(6G)) من محلولها المائي , حيث تم دراسة تاثير العوامل المؤثرة على الامتزاز وتتضمن تأثير pH و وجد ان الامتزاز يزداد مع زيادة قيمة pH لجميع الاطيان قيد الدراسة , ودرس ايضا تأثير زمن الاتزان حيث وجد ان زمن الاتزان هو( 30 دقيقة ) بالنسبة لطين الاتبلغايت و40) دقيقة ) بالنسبة لطين الفلنت، وكذلك درس تأثير وزن الطين.النتائج دلت ان النسبة المئوية للإزالة عند الاتزان لصبغة الرودامين بواسطة استخدام طيني الاتبلغايت والفلنت هي 88% ,85% على التوالي. ايزوثيرم الامتزاز ايضا درس ووجد ان الامتزاز على شكل S حسب تصنيف Gillesوهذا يتفق مع معادلة فرندلش للامتزاز .


Article
Evaluation of The Potential of Using Attapulgite Clay as Adsorbent For Removal of P-Chloroaniline(PCA) From Aqueous Solutions

Authors: Al-Sharify A.N --- Athab Z. H.*
Journal: Journal of University of Babylon مجلة جامعة بابل ISSN: 19920652 23128135 Year: 2012 Volume: 22 Issue: 1 Pages: 454-463
Publisher: Babylon University جامعة بابل

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Abstract

In this study used an attapulgite clay as low cost adsorbents for adsorption of p- chloroaniline from aqueous solutions. The factors affecting of adsorption process such as pH , temperature , and equilibrium time were studied, was found the adsorption was increase at the pH values decrease and the optimum adsorption at pH (2), the effect of equilibrium time was also studied and it was found that the best contact equilibrium time at (80) min, and study effect of initial concentration of (PCA). The effect of temperature on the equilibrium adsorption of PCA from aqueous solution using Attapulgite was investigated. Thermodynamic parameters, such as ΔG, ΔH, and ΔS were calculated and the results suggested that the PCA adsorption on Attapulgite clay was a spontaneous and endothermic process. The isotherm of this adsorption was investigated and the adsorption isotherm was found similar to S-shape according to Gilles classification, and that obeys Freundlich isotherm model .

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