Adsorption of Cr(VI) onto Activated Carbons Prepared from Indigenous Materials
The adsorption of chromium(VI) on activated carbons prepared from low cost materials has been studied by batch process. The influences of various parameters like contact time, dosage, pH, pHzpc and co-ions were experimentally verified. The adsorption of Cr(VI) is maximum at strongly acidic medium (p...
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| Format: | Article |
| Language: | English |
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Wiley
2008-01-01
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| Series: | E-Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2008/109398 |
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| author | G. Karthikeyan S. Siva Ilango |
| author_facet | G. Karthikeyan S. Siva Ilango |
| author_sort | G. Karthikeyan |
| collection | DOAJ |
| description | The adsorption of chromium(VI) on activated carbons prepared from low cost materials has been studied by batch process. The influences of various parameters like contact time, dosage, pH, pHzpc and co-ions were experimentally verified. The adsorption of Cr(VI) is maximum at strongly acidic medium (pH 3). Adsorption is explained using Langmuir and Freundlich isotherms with help of chi-square analysis. Thermodynamic parameters like ΔG°, ΔH° and ΔS° were calculated to understand the nature of adsorption. The surface morphology of the three activated carbons before and after metal sorption was verified using scanning electron microscope (SEM) and X-ray diffraction studies (XRD). |
| format | Article |
| id | doaj-art-e935e36f97354e3da8b083c2eb4690d5 |
| institution | OA Journals |
| issn | 0973-4945 2090-9810 |
| language | English |
| publishDate | 2008-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | E-Journal of Chemistry |
| spelling | doaj-art-e935e36f97354e3da8b083c2eb4690d52025-08-20T02:21:53ZengWileyE-Journal of Chemistry0973-49452090-98102008-01-015466667810.1155/2008/109398Adsorption of Cr(VI) onto Activated Carbons Prepared from Indigenous MaterialsG. Karthikeyan0S. Siva Ilango1Department of Chemistry, Gandhigram Rural University, Gandhigram-624 302, Tamilnadu, IndiaDepartment of Chemistry, Gandhigram Rural University, Gandhigram-624 302, Tamilnadu, IndiaThe adsorption of chromium(VI) on activated carbons prepared from low cost materials has been studied by batch process. The influences of various parameters like contact time, dosage, pH, pHzpc and co-ions were experimentally verified. The adsorption of Cr(VI) is maximum at strongly acidic medium (pH 3). Adsorption is explained using Langmuir and Freundlich isotherms with help of chi-square analysis. Thermodynamic parameters like ΔG°, ΔH° and ΔS° were calculated to understand the nature of adsorption. The surface morphology of the three activated carbons before and after metal sorption was verified using scanning electron microscope (SEM) and X-ray diffraction studies (XRD).http://dx.doi.org/10.1155/2008/109398 |
| spellingShingle | G. Karthikeyan S. Siva Ilango Adsorption of Cr(VI) onto Activated Carbons Prepared from Indigenous Materials E-Journal of Chemistry |
| title | Adsorption of Cr(VI) onto Activated Carbons Prepared from Indigenous Materials |
| title_full | Adsorption of Cr(VI) onto Activated Carbons Prepared from Indigenous Materials |
| title_fullStr | Adsorption of Cr(VI) onto Activated Carbons Prepared from Indigenous Materials |
| title_full_unstemmed | Adsorption of Cr(VI) onto Activated Carbons Prepared from Indigenous Materials |
| title_short | Adsorption of Cr(VI) onto Activated Carbons Prepared from Indigenous Materials |
| title_sort | adsorption of cr vi onto activated carbons prepared from indigenous materials |
| url | http://dx.doi.org/10.1155/2008/109398 |
| work_keys_str_mv | AT gkarthikeyan adsorptionofcrviontoactivatedcarbonspreparedfromindigenousmaterials AT ssivailango adsorptionofcrviontoactivatedcarbonspreparedfromindigenousmaterials |