Conversion of biomass residual to acid-modified bio-chars for efficient adsorption of organic pollutants from industrial phosphoric acid: an experimental,kinetic and thermodynamic study |
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| Authors: | Mohamed H. Taha Samir A. Abdel Maksoud Mohsen M. Ali Ahmed M. A. El Naggar Asmaa S. Morshedy Amir A. Elzoghby |
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| Affiliation: | 1. Nuclear Materials Authority, P.O. Box 530, El Maddi, Cairo, Egyptdr.mohamedp@gmail.com;3. Chemistry Department, Faculty of Science, Port Said University, Port Said, Egypt;4. Nuclear Materials Authority, P.O. Box 530, El Maddi, Cairo, Egypt;5. Egyptian Petroleum Research Institute (EPRI), 1 Ahmed El-Zomor St., Nasr City, Cairo, Egypt |
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| Abstract: | ABSTRACTThis study reports the removal of organic matters from phosphoric acid using waste-produced bio-charcoal structures. Particularly, the freshly made bio-char species via pyrolysis and two sub-driven acids activated charcoals were applied during the removal process. The treated charcoal with hydrochloric and nitric acids had attained a higher adsorption rate for organic matters than that of the non-treated one. Removal percentages of 70% and 60% were, respectively, attained by acid-modified chars. The kinetics of the adsorption process was fitted via pseudo-first/second-order and Morris–Weber models. The thermodynamic parameters of the presented sorption process indicate that organic matter removal has been endothermic, physical and spontaneous. |
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| Keywords: | Organic matters adsorption phosphoric acid purification activated charcoal separation processes |
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