摘要
The Agrobacterium sp.HN1 was isolated from the soil and used to adsorb rare earth ions La3＋ and Ce3＋.The results showed that the pretreatments of Agrobacterium sp.HN1 did not enhance the adsorption of La3＋ and Ce3＋.The pH,temperature,time and bacterial age affected the dynamics of adsorption of La3＋ and Ce3＋.The optimum adsorption conditions for Agrobacterium sp.HN1 were as follows：15 mg/L La3＋ of initial concentration,10 mg/L Ce3＋,300 mg/L（dry wt.cell） biomass for sorption,6.8 pH,30 oC temperature,150 r/min rotational speed,2 h adsorption time and 28 h bacterial age.The adsorption kinetics of La3＋ and Ce3＋ for Agrobacterium sp.HN1 followed the pseudo-second order equation.
The Agrobacterium sp.HN1 was isolated from the soil and used to adsorb rare earth ions La3＋ and Ce3＋.The results showed that the pretreatments of Agrobacterium sp.HN1 did not enhance the adsorption of La3＋ and Ce3＋.The pH,temperature,time and bacterial age affected the dynamics of adsorption of La3＋ and Ce3＋.The optimum adsorption conditions for Agrobacterium sp.HN1 were as follows：15 mg/L La3＋ of initial concentration,10 mg/L Ce3＋,300 mg/L（dry wt.cell） biomass for sorption,6.8 pH,30 oC temperature,150 r/min rotational speed,2 h adsorption time and 28 h bacterial age.The adsorption kinetics of La3＋ and Ce3＋ for Agrobacterium sp.HN1 followed the pseudo-second order equation.
基金
supported by the Natural Science Research Program of Henan Province,China(2007180025)
