Removal of Malachite green dye (MG) from water by using residual tea leaves (RTL) as adsorbent
Author
al-Karagoli, Bassim Muhammad H.
Source
Issue
Vol. 2009, Issue 36 (31 Dec. 2009), pp.690-699, 10 p.
Publisher
University of Babylon College of Sciences
Publication Date
2009-12-31
Country of Publication
Iraq
No. of Pages
10
Main Subjects
Topics
Abstract AR
يعني هذا البحث في إزالة الملونات.
و قد تم في هذه الدراسة امتزاز صبغة المليخايت الخضراء (MG) على سطح ألياف الشاي و ذلك كدالة مع درجة الحرارة، و كمية الصبغة، و الدالة الحامضية.
كمية الامتزاز حددت باستخدام المطيافية المرئية، و من ثم تم مواءمة النتائج مع معادلات كل من لانكماير، و فرندلج، و ثوابت كلتا المعادلتين تم احتسابها من خلال الميل و نقطة التقاطع مع الإحداثيات المقابلة لكل حالة.
ايسوثرمات الامتزاز تم حسابها عند درجات حرارية مطلق مختلفة (318-298)، و وجد إن كمية الامتزاز تزداد مع زيادة درجات الحرارة ضمن هذا المدى.
كذلك تم حساب ايسوثرمات الامتزاز عند دوال حامضية مختلفة (7,5,3) و وجد أن كمية الامتزاز تقل مع زيادة الدالة الحامضية .
تم حساب الدوال الثرموديناميكية ∆G°، ∆H°، ∆S° و من خلالها تم دراسة سلوكية التركيب الكيميائي للمادة الممتزة، بينت النتائج أن عملية الامتزاز هي ماصة للحرارة.
Abstract EN
The present study is related to the removal of colorants.
Adsorption of Malachite green dye on residual tea leaves was studied as a function of temperature, amount of adsorbent and pH. A spectrophotometer technique was used for measuring the extent of adsorption.
The data were fitted with Langmuir and Freundlich, isotherm equations and their corresponding constants were calculated from the slopes and intercepts of their respective lines. The measured adsorption isotherms at the different temperatures 298 K, 308 K and 318 K were found that adsorption increase as the temperature increase within this range.
from the measured adsorption isotherms at different pHs 3, 5 and 7it was found that the adsorbed amount of MG dye increases with increased acidity. Thermodynamic parameters such as standard enthalpy change (ΔHo), standard Gibbs energy change (ΔGo), and standard entropy change (ΔSo) of adsorption were calculated, and were explained in the mean of the chemical structure of the adsorbate. Results are showed that the adsorption process is endothermic.
American Psychological Association (APA)
al-Karagoli, Bassim Muhammad H.. 2009. Removal of Malachite green dye (MG) from water by using residual tea leaves (RTL) as adsorbent. National Journal of Chemistry،Vol. 2009, no. 36, pp.690-699.
https://search.emarefa.net/detail/BIM-240997
Modern Language Association (MLA)
al-Karagoli, Bassim Muhammad H.. Removal of Malachite green dye (MG) from water by using residual tea leaves (RTL) as adsorbent. National Journal of Chemistry No. 36 (2009), pp.690-699.
https://search.emarefa.net/detail/BIM-240997
American Medical Association (AMA)
al-Karagoli, Bassim Muhammad H.. Removal of Malachite green dye (MG) from water by using residual tea leaves (RTL) as adsorbent. National Journal of Chemistry. 2009. Vol. 2009, no. 36, pp.690-699.
https://search.emarefa.net/detail/BIM-240997
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 699
Record ID
BIM-240997