The Removal of Phenol and Its Derivatives from Aqueous Solutions by Adsorption on Petroleum Asphaltene
This research describes the adsorption of phenol and o-substituted phenols and xylenol isomers on petroleum asphaltenes from aqueous solution. The results revealed that the adsorption equilibrium data were best fitted with the generalized and Freundlich isotherms. For o-substituted phenols, it was f...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2013/694029 |
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| author | Omer El-Amin Ahmed Adam Ammar Hani Al-Dujaili |
| author_facet | Omer El-Amin Ahmed Adam Ammar Hani Al-Dujaili |
| author_sort | Omer El-Amin Ahmed Adam |
| collection | DOAJ |
| description | This research describes the adsorption of phenol and o-substituted phenols and xylenol isomers on petroleum asphaltenes from aqueous solution. The results revealed that the adsorption equilibrium data were best fitted with the generalized and Freundlich isotherms. For o-substituted phenols, it was found that electron-withdrawing groups increase the adsorption capacity. The uptake of these phenols decreases in the order: o-nitrophenol > o-chlorophenol > o-aminophenol > o-cresol > phenol, while the adsorption of xylenol isomers decreases in the order: 2,6-xylenol > 2,5-xylenol > 3,5-xylenol > 3,4-xylenol. Batch equilibrium results at different temperatures suggest that the adsorption of 2,6-xylenol and 3,5-xylenol onto asphaltene is an endothermic process, values obtained were positive indicating a nonspontaneous process with increasing randomness at the solid-solution interface. The influence of solution pH on the adsorption of 3,5-xylenol on asphaltenes was also investigated. The adsorption process was found to be independent on the solution pH. The adsorption capacity of 3,5-xylenol was found to increase with the decrease in particle size of the adsorbent. |
| format | Article |
| id | doaj-art-3720baf70eb640dc81f8fcb9c0ab81f6 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-3720baf70eb640dc81f8fcb9c0ab81f62025-02-03T01:32:30ZengWileyJournal of Chemistry2090-90632090-90712013-01-01201310.1155/2013/694029694029The Removal of Phenol and Its Derivatives from Aqueous Solutions by Adsorption on Petroleum AsphalteneOmer El-Amin Ahmed Adam0Ammar Hani Al-Dujaili1Department of Chemistry, Faculty of Education for Pure Science/Ibn Al-Haitham, University of Baghdad, P.O. Box 4150, Baghdad, IraqDepartment of Chemistry, Faculty of Education for Pure Science/Ibn Al-Haitham, University of Baghdad, P.O. Box 4150, Baghdad, IraqThis research describes the adsorption of phenol and o-substituted phenols and xylenol isomers on petroleum asphaltenes from aqueous solution. The results revealed that the adsorption equilibrium data were best fitted with the generalized and Freundlich isotherms. For o-substituted phenols, it was found that electron-withdrawing groups increase the adsorption capacity. The uptake of these phenols decreases in the order: o-nitrophenol > o-chlorophenol > o-aminophenol > o-cresol > phenol, while the adsorption of xylenol isomers decreases in the order: 2,6-xylenol > 2,5-xylenol > 3,5-xylenol > 3,4-xylenol. Batch equilibrium results at different temperatures suggest that the adsorption of 2,6-xylenol and 3,5-xylenol onto asphaltene is an endothermic process, values obtained were positive indicating a nonspontaneous process with increasing randomness at the solid-solution interface. The influence of solution pH on the adsorption of 3,5-xylenol on asphaltenes was also investigated. The adsorption process was found to be independent on the solution pH. The adsorption capacity of 3,5-xylenol was found to increase with the decrease in particle size of the adsorbent.http://dx.doi.org/10.1155/2013/694029 |
| spellingShingle | Omer El-Amin Ahmed Adam Ammar Hani Al-Dujaili The Removal of Phenol and Its Derivatives from Aqueous Solutions by Adsorption on Petroleum Asphaltene Journal of Chemistry |
| title | The Removal of Phenol and Its Derivatives from Aqueous Solutions by Adsorption on Petroleum Asphaltene |
| title_full | The Removal of Phenol and Its Derivatives from Aqueous Solutions by Adsorption on Petroleum Asphaltene |
| title_fullStr | The Removal of Phenol and Its Derivatives from Aqueous Solutions by Adsorption on Petroleum Asphaltene |
| title_full_unstemmed | The Removal of Phenol and Its Derivatives from Aqueous Solutions by Adsorption on Petroleum Asphaltene |
| title_short | The Removal of Phenol and Its Derivatives from Aqueous Solutions by Adsorption on Petroleum Asphaltene |
| title_sort | removal of phenol and its derivatives from aqueous solutions by adsorption on petroleum asphaltene |
| url | http://dx.doi.org/10.1155/2013/694029 |
| work_keys_str_mv | AT omerelaminahmedadam theremovalofphenolanditsderivativesfromaqueoussolutionsbyadsorptiononpetroleumasphaltene AT ammarhanialdujaili theremovalofphenolanditsderivativesfromaqueoussolutionsbyadsorptiononpetroleumasphaltene AT omerelaminahmedadam removalofphenolanditsderivativesfromaqueoussolutionsbyadsorptiononpetroleumasphaltene AT ammarhanialdujaili removalofphenolanditsderivativesfromaqueoussolutionsbyadsorptiononpetroleumasphaltene |