Mechanisms of the removal of hexavalent chromium by biomaterials or biomaterial-based activated carbons
SCIE
SCOPUS
- Title
- Mechanisms of the removal of hexavalent chromium by biomaterials or biomaterial-based activated carbons
- Authors
- Park, D; Park, JM; Yun, YS
- Date Issued
- 2006-09-21
- Publisher
- ELSEVIER SCIENCE BV
- Abstract
- Three papers published during recent 2 years in Journal of Hazardous Materials made a mistake in analyzing chromium species in aqueous solution, resulting in incorrect elucidation of Cr(VI) biosorption; the Cr(VI) was removed from aqueous solution systems by 'anionic adsorption'. However, it has been proved that Cr(VI) is easily reduced to Cr(Ill) by contact with organic materials under acidic conditions because of its high redox potential value (above +1.3 V at standard condition). Therefore, it is strongly possible that the mechanism of Cr(VI) removal by biomaterials or biomaterial-based activated carbons is not "anionic adsorption" but "adsorption-coupled reduction". Thus, for researches of Cr(VI) biosorption, researchers have to analyze not only Cr(VI) but also total Cr in aqueous solution and to check the oxidation state of chromium bound on the biomaterials or activated carbons. (c) 2006 Elsevier B.V. All rights reserved.
- Keywords
- hexavalent chromium; biosorption; reduction; biomaterial; activated carbon; LENTINUS-SAJOR-CAJU; DEAD FUNGAL BIOMASS; AQUEOUS-SOLUTIONS; AEROMONAS-CAVIAE; TREATED BIOMASS; CR(VI) REMOVAL; BROWN SEAWEED; ECKLONIA SP; BIOSORPTION; ADSORPTION
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/23786
- DOI
- 10.1016/j.jhazmat.2006.04.007
- ISSN
- 0304-3894
- Article Type
- Article
- Citation
- JOURNAL OF HAZARDOUS MATERIALS, vol. 137, no. 2, page. 1254 - 1257, 2006-09-21
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.