Equilibrium and thermodynamic studies of stearic acid adsorption on Celtek clay
This paper presents the equilibrium and thermodynamic parameters of the adsorption of stearic acid on Celtek clay as a function of temperature. It was found that the adsorption of stearic acid on Celtek clay decreased with increasing temperature from 293 to 313 K. The equilibrium modelled data fitte...
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| Format: | Article |
| Language: | English |
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Serbian Chemical Society
2007-01-01
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| Series: | Journal of the Serbian Chemical Society |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0352-5139/2007/0352-51390705485S.pdf |
| _version_ | 1818864799541362688 |
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| author | Sari Ahmet Soylak Mustafa |
| author_facet | Sari Ahmet Soylak Mustafa |
| author_sort | Sari Ahmet |
| collection | DOAJ |
| description | This paper presents the equilibrium and thermodynamic parameters of the adsorption of stearic acid on Celtek clay as a function of temperature. It was found that the adsorption of stearic acid on Celtek clay decreased with increasing temperature from 293 to 313 K. The equilibrium modelled data fitted well with the linear forms of both the Langmuir and the Freundlich models (R2 = 0.99 in both cases). The R L and 1/n values determined from the isotherm models proved that Celtek clay is a suitable adsorbent for stearic acid. The Dubinin-Radushkevich (D-R) isotherm was applied to describe the nature of the adsorption of stearic acid on Celtek clay and it was found that the adsorption occurred physically. Thermodynamic parameters of adsorption, such as Gibbs free energy change (ΔG0), enthalpy change (ΔH0) and enthropy change (ΔS0) were also calculated. These parameters showed that the adsorption of stearic acid on Celtek clay was feasible, spontaneous, and exothermic in nature. On the basis of the results, it can be concluded that Celtek clay has considerable potential for the removal of stearic acid from the main sources, such as raw and edible soybean, sunflower and olive oils. |
| first_indexed | 2024-12-19T10:37:24Z |
| format | Article |
| id | doaj.art-c7036db7ff02443ab2b573f60cf63736 |
| institution | Directory Open Access Journal |
| issn | 0352-5139 1820-7421 |
| language | English |
| last_indexed | 2024-12-19T10:37:24Z |
| publishDate | 2007-01-01 |
| publisher | Serbian Chemical Society |
| record_format | Article |
| series | Journal of the Serbian Chemical Society |
| spelling | doaj.art-c7036db7ff02443ab2b573f60cf637362022-12-21T20:25:34ZengSerbian Chemical SocietyJournal of the Serbian Chemical Society0352-51391820-74212007-01-0172548549410.2298/JSC0705485S0352-51390705485SEquilibrium and thermodynamic studies of stearic acid adsorption on Celtek claySari Ahmet0Soylak Mustafa1Department of Chemistry, Gaziosmanpaõa University, Tokat, TurkeyDepartment of Chemistry, Erciyes University, Kayseri, TurkeyThis paper presents the equilibrium and thermodynamic parameters of the adsorption of stearic acid on Celtek clay as a function of temperature. It was found that the adsorption of stearic acid on Celtek clay decreased with increasing temperature from 293 to 313 K. The equilibrium modelled data fitted well with the linear forms of both the Langmuir and the Freundlich models (R2 = 0.99 in both cases). The R L and 1/n values determined from the isotherm models proved that Celtek clay is a suitable adsorbent for stearic acid. The Dubinin-Radushkevich (D-R) isotherm was applied to describe the nature of the adsorption of stearic acid on Celtek clay and it was found that the adsorption occurred physically. Thermodynamic parameters of adsorption, such as Gibbs free energy change (ΔG0), enthalpy change (ΔH0) and enthropy change (ΔS0) were also calculated. These parameters showed that the adsorption of stearic acid on Celtek clay was feasible, spontaneous, and exothermic in nature. On the basis of the results, it can be concluded that Celtek clay has considerable potential for the removal of stearic acid from the main sources, such as raw and edible soybean, sunflower and olive oils.http://www.doiserbia.nb.rs/img/doi/0352-5139/2007/0352-51390705485S.pdfstearic acidceltek clayadsorptionisothermthermodynamic parameter |
| spellingShingle | Sari Ahmet Soylak Mustafa Equilibrium and thermodynamic studies of stearic acid adsorption on Celtek clay Journal of the Serbian Chemical Society stearic acid celtek clay adsorption isotherm thermodynamic parameter |
| title | Equilibrium and thermodynamic studies of stearic acid adsorption on Celtek clay |
| title_full | Equilibrium and thermodynamic studies of stearic acid adsorption on Celtek clay |
| title_fullStr | Equilibrium and thermodynamic studies of stearic acid adsorption on Celtek clay |
| title_full_unstemmed | Equilibrium and thermodynamic studies of stearic acid adsorption on Celtek clay |
| title_short | Equilibrium and thermodynamic studies of stearic acid adsorption on Celtek clay |
| title_sort | equilibrium and thermodynamic studies of stearic acid adsorption on celtek clay |
| topic | stearic acid celtek clay adsorption isotherm thermodynamic parameter |
| url | http://www.doiserbia.nb.rs/img/doi/0352-5139/2007/0352-51390705485S.pdf |
| work_keys_str_mv | AT sariahmet equilibriumandthermodynamicstudiesofstearicacidadsorptiononceltekclay AT soylakmustafa equilibriumandthermodynamicstudiesofstearicacidadsorptiononceltekclay |