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Position: Home > Articles > Assaying Mn~(2+) biosorption of Anabaena sp. strain PCC 7120 Journal of Huazhong Agricultural University 2018 (1) 1-6

鱼腥蓝细菌PCC 7120对Mn~(2+)的吸附

作  者:
李敏;徐韶足;陈雯莉;王莉
单  位:
华中农业大学农业微生物学国家重点实验室
关键词:
鱼腥蓝细菌;Mn2+;重金属污染;生物吸附
摘  要:
为寻找新型生物吸附剂用于重金属污染环境的修复,本研究通过设置不同时间、质量浓度以及氮源缺乏等条件,检测了鱼腥蓝细菌PCC 7120对Mn~(2+)的吸附情况。结果表明:在Mn~(2+)质量浓度低于10mg/L时,PCC 7120对Mn~(2+)的去除率最高能达到80%,并且PCC 7120对Mn~(2+)的吸附过程符合Freundlich等温吸附模型和准二级吸附动力学方程。缺氮后,PCC 7120对Mn~(2+)的耐受力降低且吸附能力大大减弱。
译  名:
Assaying Mn~(2+) biosorption of Anabaena sp. strain PCC 7120
作  者:
LI Min;XU Shaozu;CHEN Wenli;WANG Li;State Key Laboratory of Agricultural Microbiology,Huazhong Agricultural University;
关键词:
Anabaena sp.;;Mn2+;;the heavy metal pollution;;biosorption
摘  要:
Bacteria are widely used for studying the heavy metal biosorption recently.In the study,the removal rate of Mn~(2+)under normal concentration and law of biosorption about Mn~(2+)using PCC 7120 were obtained.The results showed that a high desorption efficiency(above 80%)was obtained under the low concentation(10 mg/L)of Mn~(2+).The biosorption equilibrium data are fitted well with the Freundlich adsorption isotherm and kinetic studies,indicating that the biosorption follows the pseudo second-order model.The tolerance of PCC 7120 to Mn~(2+)is impaired and the adsorption capacity is greatly diminished after nitrogen deficiency.

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