Effect of exopolymers on oxidative dissolution of natural rhodochrosite by Pseudomonas putida strain MnB1: An electrochemical study | |
Huawei Wang; Daoyong Zhang; Wenjuan Song; Xiangliang Pan; Fahad A. Al-Misned; M. Golam Mortuza | |
刊名 | Applied Geochemistry
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2015 | |
卷号 | 59页码:95-103 |
英文摘要 | Oxidative dissolution of natural rhodochrosite by the Mn(II) oxidizing bacterium Pseudomonas putida strain MnB1 was investigated based on batch and electrochemical experiments using natural rhodochrosite as the working electrode. Tafel curves and batch experiments revealed that bacterial exopolymers (EPS) significantly increased dissolution of natural rhodochrosite. The corrosion current significantly increased with reaction time for EPS treatment. However, the corrosion process was blocked in the presence of cells plus extra EPS due to formation of the passivation layer. Moreover, the scanning electron microscopy and the energy dispersive spectroscopy (SEM–EDS) results showed that the surface of the natural rhodochrosite was notably changed in the presence of EPS alone or/and bacterial cells. This study is helpful for understanding the role of EPS in bacterially oxidation of Mn(II). It also indicates that the Mn(II) oxidizing bacteria may exert their effects on Mn(II) cycle and other biological and biogeochemical processes much beyond their local ambient environment because of the catalytically dissolution of solid Mn(II) by EPS and the possible long distance transport of the detached EPS. |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.gyig.ac.cn/handle/42920512-1/9577] ![]() |
专题 | 地球化学研究所_环境地球化学国家重点实验室 |
作者单位 | 1.Laboratory of Environmental Pollution and Bioremediation, State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China 2.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China 3.University of Chinese Academy of Sciences, Beijing 100049, China 4.Department of Zoology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia 5.Department of Zoology, Faculty of Life and Earth Science, Rajshahi University, Rajshahi 6205, Bangladesh |
推荐引用方式 GB/T 7714 | Huawei Wang;Daoyong Zhang;Wenjuan Song; Xiangliang Pan;Fahad A. Al-Misned;M. Golam Mortuza. Effect of exopolymers on oxidative dissolution of natural rhodochrosite by Pseudomonas putida strain MnB1: An electrochemical study[J]. Applied Geochemistry,2015,59:95-103. |
APA | Huawei Wang;Daoyong Zhang;Wenjuan Song; Xiangliang Pan;Fahad A. Al-Misned;M. Golam Mortuza.(2015).Effect of exopolymers on oxidative dissolution of natural rhodochrosite by Pseudomonas putida strain MnB1: An electrochemical study.Applied Geochemistry,59,95-103. |
MLA | Huawei Wang;Daoyong Zhang;Wenjuan Song; Xiangliang Pan;Fahad A. Al-Misned;M. Golam Mortuza."Effect of exopolymers on oxidative dissolution of natural rhodochrosite by Pseudomonas putida strain MnB1: An electrochemical study".Applied Geochemistry 59(2015):95-103. |
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