Highly improved chromium (III) uptake capacity in modified sugarcane bagasse using different chemical treatments
The present paper focuses on improving chromium (III) uptake capacity of sugarcane bagasse through its chemical modification with citric acid and/or sodium hydroxide. The chemical modifications were confirmed by infrared spectroscopy, with an evident peak observed at 1730 cm-1, attributed to carbonyl groups. Equilibrium was reached after 24 h, and the kinetics followed the pseudo-second-order model. The highest chromium (III) maximum adsorption capacity (MAC) value was found when using sugarcane bagasse modified with sodium hydroxide and citric acid (58.00 mg g-1) giving a MAC value about three times greater (20.34 mg g-1) than for raw sugarcane bagasse.
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Sociedade Brasileira de Química
2012
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oai:scielo:S0100-404220120008000212012-09-04Highly improved chromium (III) uptake capacity in modified sugarcane bagasse using different chemical treatmentsSantos,Vanessa Cristina Gonçalves DosSalvado,Antonio de Pádua AndradeDragunski,Douglas CardosoPeraro,Débora Nobile ClausenTarley,César Ricardo TeixeiraCaetano,Josiane biosorption chromium sugarcane bagasse The present paper focuses on improving chromium (III) uptake capacity of sugarcane bagasse through its chemical modification with citric acid and/or sodium hydroxide. The chemical modifications were confirmed by infrared spectroscopy, with an evident peak observed at 1730 cm-1, attributed to carbonyl groups. Equilibrium was reached after 24 h, and the kinetics followed the pseudo-second-order model. The highest chromium (III) maximum adsorption capacity (MAC) value was found when using sugarcane bagasse modified with sodium hydroxide and citric acid (58.00 mg g-1) giving a MAC value about three times greater (20.34 mg g-1) than for raw sugarcane bagasse.info:eu-repo/semantics/openAccessSociedade Brasileira de QuímicaQuímica Nova v.35 n.8 20122012-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012000800021en10.1590/S0100-40422012000800021 |
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Santos,Vanessa Cristina Gonçalves Dos Salvado,Antonio de Pádua Andrade Dragunski,Douglas Cardoso Peraro,Débora Nobile Clausen Tarley,César Ricardo Teixeira Caetano,Josiane |
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Santos,Vanessa Cristina Gonçalves Dos Salvado,Antonio de Pádua Andrade Dragunski,Douglas Cardoso Peraro,Débora Nobile Clausen Tarley,César Ricardo Teixeira Caetano,Josiane Highly improved chromium (III) uptake capacity in modified sugarcane bagasse using different chemical treatments |
| author_facet |
Santos,Vanessa Cristina Gonçalves Dos Salvado,Antonio de Pádua Andrade Dragunski,Douglas Cardoso Peraro,Débora Nobile Clausen Tarley,César Ricardo Teixeira Caetano,Josiane |
| author_sort |
Santos,Vanessa Cristina Gonçalves Dos |
| title |
Highly improved chromium (III) uptake capacity in modified sugarcane bagasse using different chemical treatments |
| title_short |
Highly improved chromium (III) uptake capacity in modified sugarcane bagasse using different chemical treatments |
| title_full |
Highly improved chromium (III) uptake capacity in modified sugarcane bagasse using different chemical treatments |
| title_fullStr |
Highly improved chromium (III) uptake capacity in modified sugarcane bagasse using different chemical treatments |
| title_full_unstemmed |
Highly improved chromium (III) uptake capacity in modified sugarcane bagasse using different chemical treatments |
| title_sort |
highly improved chromium (iii) uptake capacity in modified sugarcane bagasse using different chemical treatments |
| description |
The present paper focuses on improving chromium (III) uptake capacity of sugarcane bagasse through its chemical modification with citric acid and/or sodium hydroxide. The chemical modifications were confirmed by infrared spectroscopy, with an evident peak observed at 1730 cm-1, attributed to carbonyl groups. Equilibrium was reached after 24 h, and the kinetics followed the pseudo-second-order model. The highest chromium (III) maximum adsorption capacity (MAC) value was found when using sugarcane bagasse modified with sodium hydroxide and citric acid (58.00 mg g-1) giving a MAC value about three times greater (20.34 mg g-1) than for raw sugarcane bagasse. |
| publisher |
Sociedade Brasileira de Química |
| publishDate |
2012 |
| url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012000800021 |
| work_keys_str_mv |
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| _version_ |
1756387493127651328 |