Studies on Adsorption of Some Organic Dyes from Aqueous Solution onto Graphene Nanosheets
Graphene, a new member of the carbon family, was used as an adsorbent due to its exceptional capability to remove Rhodamine B (RB) and Malachite Green (MG), two organic dyes, from aqueous solutions. Adsorption kinetics of RB and MG onto graphene and adsorption capacity of the adsorbent were studied....
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| Format: | Article |
| Language: | English |
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Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
2015-06-01
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| Series: | Iranian Journal of Chemistry & Chemical Engineering |
| Subjects: | |
| Online Access: | http://www.ijcce.ac.ir/article_14096_1a85443c2d83a7f7369b22b490b7a105.pdf |
| _version_ | 1811265556749221888 |
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| author | Abdolhossein Naseri Roghayyeh Barati Farzaneh Rasoulzadeh Morteza Bahram |
| author_facet | Abdolhossein Naseri Roghayyeh Barati Farzaneh Rasoulzadeh Morteza Bahram |
| author_sort | Abdolhossein Naseri |
| collection | DOAJ |
| description | Graphene, a new member of the carbon family, was used as an adsorbent due to its exceptional capability to remove Rhodamine B (RB) and Malachite Green (MG), two organic dyes, from aqueous solutions. Adsorption kinetics of RB and MG onto graphene and adsorption capacity of the adsorbent were studied. Also the effects of parameters, including pH, contact time, temperature, and adsorbent dosage were studied. The adsorption process was followed using UV-visible spectroscopy. The isotherm analysis indicated that Freundlich and Langmuir isotherms are suitable for RB and MG, respectively. Pseudo-first- and pseudo-second-order models were considered to evaluate rate parameters. The kinetic experimental results fitted well the pseudo-second-order model for the two dyes, with correlation coefficients being greater than 0.99. Thermodynamic studies indicated that the adsorption processes is spontaneous for both the dyes, and exothermic for RB and endothermic for MG. |
| first_indexed | 2024-04-12T20:25:47Z |
| format | Article |
| id | doaj.art-3958833125944d02b4ec279e6e18d335 |
| institution | Directory Open Access Journal |
| issn | 1021-9986 1021-9986 |
| language | English |
| last_indexed | 2024-04-12T20:25:47Z |
| publishDate | 2015-06-01 |
| publisher | Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR |
| record_format | Article |
| series | Iranian Journal of Chemistry & Chemical Engineering |
| spelling | doaj.art-3958833125944d02b4ec279e6e18d3352022-12-22T03:17:52ZengIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry & Chemical Engineering1021-99861021-99862015-06-01342516014096Studies on Adsorption of Some Organic Dyes from Aqueous Solution onto Graphene NanosheetsAbdolhossein Naseri0Roghayyeh Barati1Farzaneh Rasoulzadeh2Morteza Bahram3Departments of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, P.O. Box 51666-16471 Tabriz, I.R. IRANDepartment of Chemistry, Payame Nour University, Urmia, I.R. IRANDrug Applied Research Center, Tabriz University of Medical Sciences, P.O. Box 51644-14766 Tabriz, I.R. IRANDepartment of Chemistry, Faculty of Science, Urmia University, Urmia, I.R. IRANGraphene, a new member of the carbon family, was used as an adsorbent due to its exceptional capability to remove Rhodamine B (RB) and Malachite Green (MG), two organic dyes, from aqueous solutions. Adsorption kinetics of RB and MG onto graphene and adsorption capacity of the adsorbent were studied. Also the effects of parameters, including pH, contact time, temperature, and adsorbent dosage were studied. The adsorption process was followed using UV-visible spectroscopy. The isotherm analysis indicated that Freundlich and Langmuir isotherms are suitable for RB and MG, respectively. Pseudo-first- and pseudo-second-order models were considered to evaluate rate parameters. The kinetic experimental results fitted well the pseudo-second-order model for the two dyes, with correlation coefficients being greater than 0.99. Thermodynamic studies indicated that the adsorption processes is spontaneous for both the dyes, and exothermic for RB and endothermic for MG.http://www.ijcce.ac.ir/article_14096_1a85443c2d83a7f7369b22b490b7a105.pdfgraphene nanosheetsadsorptionrhodamine bmalachite greenisothermskinetic |
| spellingShingle | Abdolhossein Naseri Roghayyeh Barati Farzaneh Rasoulzadeh Morteza Bahram Studies on Adsorption of Some Organic Dyes from Aqueous Solution onto Graphene Nanosheets Iranian Journal of Chemistry & Chemical Engineering graphene nanosheets adsorption rhodamine b malachite green isotherms kinetic |
| title | Studies on Adsorption of Some Organic Dyes from Aqueous Solution onto Graphene Nanosheets |
| title_full | Studies on Adsorption of Some Organic Dyes from Aqueous Solution onto Graphene Nanosheets |
| title_fullStr | Studies on Adsorption of Some Organic Dyes from Aqueous Solution onto Graphene Nanosheets |
| title_full_unstemmed | Studies on Adsorption of Some Organic Dyes from Aqueous Solution onto Graphene Nanosheets |
| title_short | Studies on Adsorption of Some Organic Dyes from Aqueous Solution onto Graphene Nanosheets |
| title_sort | studies on adsorption of some organic dyes from aqueous solution onto graphene nanosheets |
| topic | graphene nanosheets adsorption rhodamine b malachite green isotherms kinetic |
| url | http://www.ijcce.ac.ir/article_14096_1a85443c2d83a7f7369b22b490b7a105.pdf |
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