Adsorption of chromium ion (VI) by acid activated carbon
The activated carbon produced from olive stones was chemically activated using sulfuric acid, (OS-S), and utilized as an adsorbent for the removal of Cr(VI) from aqueous solution in the concentration range 4-50 mg/L. Adsorption experiments were carried out in a batch process and various experimental parameters such as effect of contact time, initial chromium ion concentration, carbon dosage, and pH on percentage removal have been studied. Adsorption results obtained for activated carbon (OS-S) were compared with the acid-treated commercial activated carbon (CAC-S). The optimum efficiency shows that the Cr(VI) uptake being attained at pH 1.5. The equilibrium adsorption data was better fitted to the Langmuir adsorption model. The results of kinetic models showed that the pseudo-first-order kinetic model was found to correlate the experimental data well. It was concluded that activated carbon produced from olive stones (OS-S) has an efficient adsorption capacity compared to (CAC-S) sample.
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Brazilian Society of Chemical Engineering
2010
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oai:scielo:S0104-663220100001000162010-04-14Adsorption of chromium ion (VI) by acid activated carbonAttia,A. A.Khedr,S. A.Elkholy,S. A. Activated carbon Adsorption Kinetics of Cr(VI) removal The activated carbon produced from olive stones was chemically activated using sulfuric acid, (OS-S), and utilized as an adsorbent for the removal of Cr(VI) from aqueous solution in the concentration range 4-50 mg/L. Adsorption experiments were carried out in a batch process and various experimental parameters such as effect of contact time, initial chromium ion concentration, carbon dosage, and pH on percentage removal have been studied. Adsorption results obtained for activated carbon (OS-S) were compared with the acid-treated commercial activated carbon (CAC-S). The optimum efficiency shows that the Cr(VI) uptake being attained at pH 1.5. The equilibrium adsorption data was better fitted to the Langmuir adsorption model. The results of kinetic models showed that the pseudo-first-order kinetic model was found to correlate the experimental data well. It was concluded that activated carbon produced from olive stones (OS-S) has an efficient adsorption capacity compared to (CAC-S) sample.info:eu-repo/semantics/openAccessBrazilian Society of Chemical EngineeringBrazilian Journal of Chemical Engineering v.27 n.1 20102010-03-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322010000100016en10.1590/S0104-66322010000100016 |
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| author |
Attia,A. A. Khedr,S. A. Elkholy,S. A. |
| spellingShingle |
Attia,A. A. Khedr,S. A. Elkholy,S. A. Adsorption of chromium ion (VI) by acid activated carbon |
| author_facet |
Attia,A. A. Khedr,S. A. Elkholy,S. A. |
| author_sort |
Attia,A. A. |
| title |
Adsorption of chromium ion (VI) by acid activated carbon |
| title_short |
Adsorption of chromium ion (VI) by acid activated carbon |
| title_full |
Adsorption of chromium ion (VI) by acid activated carbon |
| title_fullStr |
Adsorption of chromium ion (VI) by acid activated carbon |
| title_full_unstemmed |
Adsorption of chromium ion (VI) by acid activated carbon |
| title_sort |
adsorption of chromium ion (vi) by acid activated carbon |
| description |
The activated carbon produced from olive stones was chemically activated using sulfuric acid, (OS-S), and utilized as an adsorbent for the removal of Cr(VI) from aqueous solution in the concentration range 4-50 mg/L. Adsorption experiments were carried out in a batch process and various experimental parameters such as effect of contact time, initial chromium ion concentration, carbon dosage, and pH on percentage removal have been studied. Adsorption results obtained for activated carbon (OS-S) were compared with the acid-treated commercial activated carbon (CAC-S). The optimum efficiency shows that the Cr(VI) uptake being attained at pH 1.5. The equilibrium adsorption data was better fitted to the Langmuir adsorption model. The results of kinetic models showed that the pseudo-first-order kinetic model was found to correlate the experimental data well. It was concluded that activated carbon produced from olive stones (OS-S) has an efficient adsorption capacity compared to (CAC-S) sample. |
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Brazilian Society of Chemical Engineering |
| publishDate |
2010 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322010000100016 |
| work_keys_str_mv |
AT attiaaa adsorptionofchromiumionvibyacidactivatedcarbon AT khedrsa adsorptionofchromiumionvibyacidactivatedcarbon AT elkholysa adsorptionofchromiumionvibyacidactivatedcarbon |
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1756411226277019648 |