Adsorption Study for Chromium (VI) on Iraqi Bentonite
The subject of this research involves studying adsorption to remove hexavalent chromium Cr(VI) from aqueous solutions. Adsorption process on bentonite clay as adsorbent was used in the Cr(VI) concentration range (10-100) ppm at different temperatures (298, 303, 308 and 313)K, for different periods o...
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| Language: | English |
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University of Baghdad, College of Science for Women
2010-03-01
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| Series: | مجلة بغداد للعلوم |
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| Online Access: | http://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/2918 |
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| author | Baghdad Science Journal |
| author_facet | Baghdad Science Journal |
| author_sort | Baghdad Science Journal |
| collection | DOAJ |
| description | The subject of this research involves studying adsorption to remove hexavalent chromium Cr(VI) from aqueous solutions.
Adsorption process on bentonite clay as adsorbent was used in the Cr(VI) concentration range (10-100) ppm at different temperatures (298, 303, 308 and 313)K, for different periods of time.
The adsorption isotherms were obtained by obeying Langmuir and Freundlich adsorption isotherm with R2 (0.9921-0.9060) and (0.994-0.9998), respectively.
The thermodynamic parameters were calculated by using the adsorption process at four different temperatures the values of ?H, ?G and ?S was [(+6.582 ? +6.547) kJ.mol-1, (-284.560 ? -343.070) kJ.mol-1 and (+0.977 ? +1.117) kJ.K-1.mol-1] respectively. This data indicates the spontaneous sorption process.
The kinetic study of adsorption process was studied depending on three kinetic equations:
1- Lagergren equation
2- Morris-Weber equation
3- Reichenberg equation |
| format | Article |
| id | doaj-art-7dfc84edd1be4836a3cc91663a714d6e |
| institution | DOAJ |
| issn | 2078-8665 2411-7986 |
| language | English |
| publishDate | 2010-03-01 |
| publisher | University of Baghdad, College of Science for Women |
| record_format | Article |
| series | مجلة بغداد للعلوم |
| spelling | doaj-art-7dfc84edd1be4836a3cc91663a714d6e2025-08-20T03:14:54ZengUniversity of Baghdad, College of Science for Womenمجلة بغداد للعلوم2078-86652411-79862010-03-017110.21123/bsj.7.1.745-756Adsorption Study for Chromium (VI) on Iraqi BentoniteBaghdad Science JournalThe subject of this research involves studying adsorption to remove hexavalent chromium Cr(VI) from aqueous solutions. Adsorption process on bentonite clay as adsorbent was used in the Cr(VI) concentration range (10-100) ppm at different temperatures (298, 303, 308 and 313)K, for different periods of time. The adsorption isotherms were obtained by obeying Langmuir and Freundlich adsorption isotherm with R2 (0.9921-0.9060) and (0.994-0.9998), respectively. The thermodynamic parameters were calculated by using the adsorption process at four different temperatures the values of ?H, ?G and ?S was [(+6.582 ? +6.547) kJ.mol-1, (-284.560 ? -343.070) kJ.mol-1 and (+0.977 ? +1.117) kJ.K-1.mol-1] respectively. This data indicates the spontaneous sorption process. The kinetic study of adsorption process was studied depending on three kinetic equations: 1- Lagergren equation 2- Morris-Weber equation 3- Reichenberg equationhttp://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/2918"Study, Adsorption, Chromium, Bentonite." |
| spellingShingle | Baghdad Science Journal Adsorption Study for Chromium (VI) on Iraqi Bentonite مجلة بغداد للعلوم "Study, Adsorption, Chromium, Bentonite." |
| title | Adsorption Study for Chromium (VI) on Iraqi Bentonite |
| title_full | Adsorption Study for Chromium (VI) on Iraqi Bentonite |
| title_fullStr | Adsorption Study for Chromium (VI) on Iraqi Bentonite |
| title_full_unstemmed | Adsorption Study for Chromium (VI) on Iraqi Bentonite |
| title_short | Adsorption Study for Chromium (VI) on Iraqi Bentonite |
| title_sort | adsorption study for chromium vi on iraqi bentonite |
| topic | "Study, Adsorption, Chromium, Bentonite." |
| url | http://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/2918 |
| work_keys_str_mv | AT baghdadsciencejournal adsorptionstudyforchromiumvioniraqibentonite |