Abstract
The adsorption of hexavalent chromium onto bone charcoal was studied as a function of time, amount of charcoal, pH, concentration of chromium and sample volume. The cross interference with other elements was also investigated. Tests were carried out with solutions of chromium(VI) at concentrations between 5 and 25 mg · L–1. Chromium removal efficiencies higher than 90% were achieved at pH = 1 using 2 g of bone charcoal and a stirring time in the order of 30 min. Acid and alkaline pretreatments of bone charcoal did not improve the sorption capacity of bone charcoal against Cr(VI). The presence of other ions had practically no influence on the chromium removal. The presence of a matrix of tannery effluents did not reduce the removal capacity of bone charcoal for Cr(VI), but it was confirmed that only 47% of Cr(III) can be removed using these conditions.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
Author information
Authors and Affiliations
Additional information
Received: 20 July 1998 / Revised: 4 October 1998 / Accepted: 10 October 1998
Rights and permissions
About this article
Cite this article
Dahbi, S., Azzi, M. & de la Guardia, M. Removal of hexavalent chromium from wastewaters by bone charcoal. Fresenius J Anal Chem 363, 404–407 (1999). https://doi.org/10.1007/s002160051210
Issue Date:
DOI: https://doi.org/10.1007/s002160051210