Adsorption of Diclofenac Sodium and Ibuprofen by Bentonite Polyureaformaldehyde Thermodynamics and Kinetics Study
Iraqi Journal of Chemical and Petroleum Engineering
View Archive Info| Field | Value | |
| Title |
Adsorption of Diclofenac Sodium and Ibuprofen by Bentonite Polyureaformaldehyde Thermodynamics and Kinetics Study
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| Creator |
Abdel Majeed, Basma Abbas
Muhseen, Raheem Jameel |
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| Description |
An increasing number of emerging contaminants have been detected in surface waters, sediment, soil and ground water in different locations in the world, which is a new environmental challenges need an actual concern for international scientific and legislative communities. The nonprescription and huge used pharmaceuticals ibuprofen and diclofenac sodium will be focused in this study. New adsorbent developed using cheap inorganic clay material (bentonite) and organic polymer polyureaformaldehyde (PUF), the combination of these two materials gave the surface more roughness with wide active site distribution. Batch adsorption experiment performed to each pharmaceutical individually to determine the optimum separation parameters and understanding the adsorption process pathway. Both pharmaceuticals adsorbed on bentonite –PUF adsorbent in short time ranges from 15 min for ibuprofen to 30 min for diclofenac sodium .Thermodynamic analysis indicates the adsorption process is endothermic in nature and fall in the region of physical adsorption for tested pharmaceuticals (ΔH˚=23.33 and 14.69 KJ/Mol for both ibuprofen and diclofenac sodium respectively).Elovichs equation for describing kinetics of adsorption seemed a good fit with adsorption of both pharmaceuticals .The effect of pH had a significant effect for both pharmaceuticals with high removal (99.8% for diclofenac and 99.2 % for ibuprofen) at acidic pH=2 below Pka value. Isotherm studied at different initial concentration, the results showed that the Dubinin-Radushkevich model suitable for describing ibuprofen adsorption, and Freundlich's isotherm for diclofenac sodium. |
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| Publisher |
University of Baghdad/ College of Engineering
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| Date |
2018-03-31
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| Type |
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion |
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| Format |
application/pdf
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| Identifier |
http://ijcpe.uobaghdad.edu.iq/index.php/ijcpe/article/view/223
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| Source |
Iraqi Journal of Chemical and Petroleum Engineering; Vol 19 No 1 (2018): Iraqi Journal of Chemical and Petroleum Engineering; 29-43
المجلة العراقية للهندسة الكيمياوية وهندسة النفط; مجلد 19 عدد 1 (2018): Iraqi Journal of Chemical and Petroleum Engineering; 29-43 2618-0707 1997-4884 |
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| Language |
eng
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| Relation |
http://ijcpe.uobaghdad.edu.iq/index.php/ijcpe/article/view/223/219
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