TITLE:
Biosorption of Metal Ions by Exopolysaccharide Produced by Azotobacter chroococcum XU1
AUTHORS:
Bakhtiyor A. Rasulov, Abulimiti Yili, Haji A. Aisa
KEYWORDS:
Azotobacter chroococcum XU1; Exopolysaccharide; Biosorption; Lead; Mercury
JOURNAL NAME:
Journal of Environmental Protection,
Vol.4 No.9,
September
11,
2013
ABSTRACT:
This paper deals with adsorption of Pb
and Hg on the exopolysaccharide produced by Azotobacter
chroococcum XU1. The adsorption of metal ions was significantly affected by
the pH of metal solutions (Pb(NO3)2 and Hg(NO3)2),
metal ions concentration and exopolysaccharide concentrations. At optimum pH
the uptakes of the metals were 40.48% and 47.87%
respectively. The metal ions biosorption was high at 4, 5-5.