Bisorption of chromium(VI) from aqueous solutions by Sargassum thunbergii Kuntze
The potential to remove Cr(VI) from aqueous solutions through biosorption using dried Sargassum thunbergii Kuntze was investigated with respect to initial pH, amount of biosorbent, initial Cr(VI) concentrations and temperature. Cr(VI) removal efficiency was influenced significantly by the variation...
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Taylor & Francis
2014
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| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4434090/ |
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pubmed-44340902015-05-25 Bisorption of chromium(VI) from aqueous solutions by Sargassum thunbergii Kuntze Wang, Yun Li, Yingxia Zhao, Feng Juan Article; Agriculture and Environmental Biotechnology The potential to remove Cr(VI) from aqueous solutions through biosorption using dried Sargassum thunbergii Kuntze was investigated with respect to initial pH, amount of biosorbent, initial Cr(VI) concentrations and temperature. Cr(VI) removal efficiency was influenced significantly by the variation of pH, and the optimum pH was about 2.0. Moreover, the biosorption kinetics followed the pseudo-second-order model. The adsorption equilibrium was well described by the Langmuir and Freundlich isotherm models. The maximum adsorption capacity was 1.855 mmol/g at 318 K and pH 2.0. The adsorption processes were endothermic and the biosorption heat was 15.8 kJ/mol. Furthermore, the Fourier transform infrared spectroscopy suggested that amido-, hydroxyl-, C = O and C—O groups were involved in the biosorption of Cr(VI) onto S. thunbergii. Taylor & Francis 2014-03-04 2014-07-03 /pmc/articles/PMC4434090/ /pubmed/26019511 http://dx.doi.org/10.1080/13102818.2014.907028 Text en © 2014 The Author(s). Published by Taylor & Francis. http://creativecommons.org/licenses/by/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The moral rights of the named author(s) have been asserted. |
| repository_type |
Open Access Journal |
| institution_category |
Foreign Institution |
| institution |
US National Center for Biotechnology Information |
| building |
NCBI PubMed |
| collection |
Online Access |
| language |
English |
| format |
Online |
| author |
Wang, Yun Li, Yingxia Zhao, Feng Juan |
| spellingShingle |
Wang, Yun Li, Yingxia Zhao, Feng Juan Bisorption of chromium(VI) from aqueous solutions by Sargassum thunbergii Kuntze |
| author_facet |
Wang, Yun Li, Yingxia Zhao, Feng Juan |
| author_sort |
Wang, Yun |
| title |
Bisorption of chromium(VI) from aqueous solutions by Sargassum thunbergii Kuntze |
| title_short |
Bisorption of chromium(VI) from aqueous solutions by Sargassum thunbergii Kuntze |
| title_full |
Bisorption of chromium(VI) from aqueous solutions by Sargassum thunbergii Kuntze |
| title_fullStr |
Bisorption of chromium(VI) from aqueous solutions by Sargassum thunbergii Kuntze |
| title_full_unstemmed |
Bisorption of chromium(VI) from aqueous solutions by Sargassum thunbergii Kuntze |
| title_sort |
bisorption of chromium(vi) from aqueous solutions by sargassum thunbergii kuntze |
| description |
The potential to remove Cr(VI) from aqueous solutions through biosorption using dried Sargassum thunbergii Kuntze was investigated with respect to initial pH, amount of biosorbent, initial Cr(VI) concentrations and temperature. Cr(VI) removal efficiency was influenced significantly by the variation of pH, and the optimum pH was about 2.0. Moreover, the biosorption kinetics followed the pseudo-second-order model. The adsorption equilibrium was well described by the Langmuir and Freundlich isotherm models. The maximum adsorption capacity was 1.855 mmol/g at 318 K and pH 2.0. The adsorption processes were endothermic and the biosorption heat was 15.8 kJ/mol. Furthermore, the Fourier transform infrared spectroscopy suggested that amido-, hydroxyl-, C = O and C—O groups were involved in the biosorption of Cr(VI) onto S. thunbergii. |
| publisher |
Taylor & Francis |
| publishDate |
2014 |
| url |
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4434090/ |
| _version_ |
1613224356419207168 |