Biosorption of Metal Ions by Exopolysaccharide Produced by <i>Azotobacter chroococcum</i>XU1  

作　　者：Bakhtiyor A. Rasulov Abulimiti Yili Haji A. Aisa 

机构地区：[1]1Institute of Genetics and Plant Experimental Biology, Uzbekistan Academy of Sciences, Yukori Yuz, Uzbekistan 2The Key Labora- tory of Plant Resources and Chemistry of Arid Zone, China Xinjiang Technical Institute of Physics & Chemistry, CAS, Urumqi, China [2]1The Key Labora- tory of Plant Resources and Chemistry of Arid Zone, China Xinjiang Technical Institute of Physics & Chemistry, CAS, Urumqi, China 2Central Asian Drug Discoveries and Development Center of Chinese Academy of Sciences, Urumqi, China.

出　　处：《Journal of Environmental Protection》2013年第9期989-993,共5页环境保护（英文）

摘　　要：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.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.

关 键 词：AZOTOBACTER chroococcum XU1 EXOPOLYSACCHARIDE BIOSORPTION Lead Mercury 

分 类 号：O6[理学—化学]