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- Title
Removal of Cr(VI) from aqueous solutions by the culm of bamboo grass treated with concentrated sulfuric acid.
- Authors
Koroki, M.; Saito, S.; Hashimoto, H.; Yamada, T.; Aoyama, Masakazu
- Abstract
We prepared a carbonaceous sorbent for Cr(VI) from the culm of Sasa kurilensis by dehydration with concentrated H2SO4. The removal of Cr(VI) by the sorbent was highly solution pH dependent and mainly governed by physicochemical sorption. The equilibrium data fit well in the Langmuir isotherm model and indicate the endothermic nature of the Cr(VI) sorption. The desorption experiments suggest that the Cr(VI) sorption is generally irreversible, owing to strong interaction of HCrO with the active sites of the sorbent.
- Subjects
HEXAVALENT chromium; HYMENACHNE amplexicaulis; SULFURIC acid; ABSORPTION; HYDROGEN-ion concentration
- Publication
Environmental Chemistry Letters, 2010, Vol 8, Issue 1, p59
- ISSN
1610-3653
- Publication type
Article
- DOI
10.1007/s10311-008-0191-9