Equilibrium and Thermodynamic Studies of Stearic Acid Adsorption on Sepiolite
Yazarlar (2)
Prof. Dr. Ömer IŞILDAK
Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Karadeniz Teknik Üniversitesi, Türkiye
| Makale Türü | Özgün Makale |
| Makale Alt Türü | SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale |
| Dergi Adı | Asian Journal of Chemistry |
| Dergi ISSN | 0970-7077 Wos Dergi Scopus Dergi |
| Dergi Tarandığı Indeksler | SCI-Expanded |
| Dergi Grubu | Q4 |
| Makale Dili | İngilizce |
| Basım Tarihi | 01-2008 |
| Cilt No | 20 |
| Sayı | 3 |
| Sayfalar | 2099 / 2104 |
| DOI Numarası | 10.14233/ajchem.2015.17118 |
| Makale Linki | http://www.asianjournalofchemistry.co.in/user/journal/viewarticle.aspx?ArticleID=27_3_3 |
| Özet |
| This study presents the equilibrium and thermodynamic parameters of the adsorption of stearic acid on sepiolite as a function of temperature. The equilibrium data were applied to linear Langmuir and Freundlich models and the coefficients of determination (r2 = 0.849-0.935 for linear Langmuir model and r2 = 0.990-0.995 for linear Feundlich model), indicating that the second model was more applicable in the evaluation of equilibrium data at studied conditions. Thermodynamic parameters such as free energy (ΔG°), enthalpy (ΔH°) and entropy of adsorption (ΔS°) were also calculated. These parameters revealed that the adsorption of stearic acid on sepiolite was feasible, spontaneous and exothermic in nature. On the basis of the results, it can be concluded that the sepiolite has a considerable potential for removal of stearic acid from the main sources such as raw and edible soybean, sunflower and olive oils. |
| Anahtar Kelimeler |
| Adsorption isotherm | Sepiolite | Stearic acid | Thermodynamic parameters |
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| SCOPUS | 2 |