Biosorption of Metal Ions by Exopolysaccharide Produced by <i>Azotobacter chroococcum</i> XU1
Bakhtiyor A. RasulovInstitute of Genetics and Plant Experimental Biology, Uzbekistan Academy of Sciences, Yukori Yuz, Uzbekistan;Abulimiti YiliCentral Asian Drug Discoveries and Development Center of Chinese Academy of Sciences, Urumqi, ChinaHaji Akber AisaCentral Asian Drug Discoveries and Development Center of Chinese Academy of Sciences, Urumqi, China
ABI
Аннотация
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.
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