|本期目录/Table of Contents|

[1]白红娟,张肇铭,李保珍,等.固定化球形红细菌去除镉的动力学及其与质粒的关系[J].应用与环境生物学报,2008,14(02):249-252.
 BAI Hongjuan,et al..Kinetics of Cadmium Removal by Immobilized Rhodobacter sphaeroides and Its Relation with Plasmid[J].Chinese Journal of Applied & Environmental Biology,2008,14(02):249-252.
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固定化球形红细菌去除镉的动力学及其与质粒的关系()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
14卷
期数:
2008年02期
页码:
249-252
栏目:
综述
出版日期:
2008-02-15

文章信息/Info

Title:
Kinetics of Cadmium Removal by Immobilized Rhodobacter sphaeroides and Its Relation with Plasmid
作者:
白红娟张肇铭李保珍杨官娥李琦
Author(s):
BAI Hongjuanet al.
(1College of Life Science and Technology, Shanxi University, Taiyuan 030006, China) (2Chemical Industry and Ecology Institute, North University of China, Taiyuan 030051, China)
关键词:
关键词 固定化球形红细菌动力学质粒
Keywords:
Keywords immobilization Rhodobacter sphaeroides cadmium kinetics plasmid
Abstract:
Abstract Rhodobacter sphaeroides was acclimated and immobilized in polyvinylalcohol gel beads, and the immobilized R. sphaeroides was used to remove Cd2+ from aqueous solution. The kinetic characteristics of Cd2+ removal by the immobilized R. sphaeroides were studied. The experimental results demonstrated that the immobilized R. sphaeroides was effective in removing Cd2+ from aqueous solution, and the removal rate could reach more than 75% in presence of 20~160 mg/L of cadmium. The kinetics of Cd2+ removal by the immobilized R. sphaeroides followed pseudosecond order equation -dC/dt=k2C2+k1C+k0, and the correlation coefficient values R2=0.957 7~0.993 8. The maximum removal rates p of Cd2+ decreased while the values of half life T1/2 prolonged, and inhibition effect of Cd2+ increased greatly with the increasing of initial concentration of Cd2+. Also, the strain had a big plasmid, and its Cdresistance and Cdremoval genes were located on the plasmid. Fig 3, Tab 1, Ref 19

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更新日期/Last Update: 2008-04-23