| Yazarlar |
Fikret İnal
İzmir Yüksek Teknoloji Enstitüsü, Türkiye |
Dr. Öğr. Üyesi Senem YETGİN
Kastamonu Üniversitesi, Türkiye |
|
Aksu Gulsum T
|
|
Simsek Selvi
|
|
Sofuoglu Aysun
|
|
Sofuoglu Sait C
|
| Özet |
| The aqueous phase adsorption of fuel oxygenates methyl tertiary butyl ether (MTBE) and ethyl tertiary butyl ether (ETBE) onto commercially available granular activated carbon (GAC; Norit GAC 1240) was investigated in a batch system at 27°C. The oxygenate concentrations were determined by headspace gas chromatography/mass spectrometry analyses. The experimental data were used with four two-parameter isotherm models (Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich) and two kinetic models (pseudo first-order and pseudo second-order) to determine equilibrium and kinetic parameters. Considering the correlation coefficient and root mean square error, Dubinin-Radushkevich isotherm showed better fit with the equilibrium data for MTBE. However, the performances of Langmuir and Dubinin-Radushkevich models were comparable for ETBE. The adsorption capacities were calculated as 5.50 and 6.92 mg/g for MTBE and ETBE, respectively, at an equilibrium solution concentration of 1 mg/L using Dubinin-Radushkevich isotherm. The differences between the model predictions and experimental data were similar for the pseudo first-order and pseudo second-order kinetic models. Gibbs free-energy changes of adsorption were found to be -22.59 and -28.55 kJ/mol for MTBE-GAC and ETBE-GAC systems, respectively, under the experimental conditions studied. © 2009 Springer Science+Business Media B.V. |
| Anahtar Kelimeler |
| Adsorption,Fuel oxygenate,MTBE,ETBE |
| Makale Türü | Özgün Makale |
| Makale Alt Türü | SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale |
| Dergi Adı | Water, Air, and Soil Pollution |
| Dergi ISSN | 0049-6979 |
| Dergi Tarandığı Indeksler | SCI-Expanded |
| Makale Dili | İngilizce |
| Basım Tarihi | 11-2009 |
| Cilt No | 204 |
| Sayı | 1 |
| Sayfalar | 155 / 163 |
| Doi Numarası | 10.1007/s11270-009-0034-8 |
| Makale Linki | http://link.springer.com/10.1007/s11270-009-0034-8 |
| Atıf Sayıları | |
| WoS | 21 |
| SCOPUS | 23 |
