1. Chromium Adsorption by Three Yeast Strains Isolated from Sediments in Morocco.
- Author
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Bahafid, Wifak, Joutey, NezhaTahri, Sayel, Hanane, Iraqui-Houssaini, Mohamed, and El Ghachtouli, Naïma
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TOXICOLOGY of chromium , *HEAVY metals removal (Sewage purification) , *HEAVY metal content of sediments , *HEAVY metal content of sewage , *HEAVY metal toxicology , *YEAST research - Abstract
Biosorption is an effective method to remove heavy metals from wastewater. In this work, Biosorption of Cr(VI) has been investigated by live and dead cells of three yeasts species:Cyberlindnera fabianii, Wickerhamomyces anomalusandCandida tropicalis. Sorption experiments were conducted in aqueous solutions at various pH conditions. Cr(VI) adsorption was highly pH dependent and the results indicated that the most effective pH range was found to be between 2 and 4 for the three species. Adsorption isotherms were modeled with the Langmuir and Freundlich equations and isotherm constants were calculated. The adsorption capacity calculated from Langmuir isotherm was 18.9 mg, 28.14 mg and 29.1 mg Cr(VI) g−1Cr(VI) g−1forC. fabianii, W. anomalusandC. tropicalis,respectively. The results suggest that the three yeasts could be used as effective adsorbents for the removal of Cr(VI) ions from contaminated sites. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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