期刊
JOURNAL OF ENVIRONMENTAL MANAGEMENT
卷 235, 期 -, 页码 224-230出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2019.01.060
关键词
Biosorption; Biotransformation; Chelate copper; Ionic copper; Ochrobactrum; SMPs
资金
- Guangdong Provincial Special Science and Technology Fund for Practical Research and Development [2015B020235006]
- Water Resource Science and Technology Innovation Program of Guangdong Province [2017-20]
To study the biosorption behaviors of bacteria on heavy metal chelators, the biosorption kinetics, biosorption thermodynamics and pH influence tests of the Ochrobactrum MT180101 on ionic and chelate copper were investigated. Furthermore, the biosorption mechanisms of the Ochrobactrum MT180101 on ionic copper and chelate copper were explained by means of an excitation emission matrix as well as infrared and X-ray photo-electron spectroscopy. The results indicated the following. 1) The biosorption on chelate copper was needed to destroy the complexation group first through metabolic and secretory activities. 2) The biosorption mechanism of the Ochrobactrum MT180101 on copper involved surface biosorption, extracellular chelation and bienzyme-mediated biotransformation. The results suggested that Ochrobactrum had a superior biosorption efficiency to ionic and chelate copper.
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