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题名: Bacillus sp Acting as Dual Role for Corrosion Induction and Corrosion Inhibition with Carbon Steel (CS)
作者: Karn, Santosh K.1,2,3; Fang, Guan1; Duan, Jizhou1
刊名: FRONTIERS IN MICROBIOLOGY
出版日期: 2017-10-24
卷号: 8
关键词: Bacillus sp corrosion inhibition ; corrosion induction ; peroxidase ; catalsae ; biofilms
DOI: 10.3389/fmicb.2017.02038
文章类型: Article
英文摘要: Present work investigated the role of five different bacteria species as a corrosion inducer as well as corrosion inhibitor with carbon steel (CS). We observed the ability of different bacteria species on the metal surface attachment, biofilm formation, and determined Peroxidase. Catalase enzyme activity in the detached biofilm from the CS surface. We found that each strain has diverse conduct for surface attachment like DS1 3.3, DS2 2.5, DS3 4.3, D34 4.0, and D35 4.71 log cfu/cm(2) and for biofilm 8.3 log cfu/cm(2). The enzyme Peroxidase. Catalase was found in huge concentration inside the biofilm Peroxidase was maximum for DS4 36.0 U/ml and least for DS3 19.54 U/ml. Whereas, Catalase was highest for DS4. DS5 70.14 U/ml and least 57.2 U/ml for DS2. Scanning electron microscopy (SEM) was conducted to examine the biofilm and electrochemical impedance spectroscopy (EIS) were utilized to observe corrosion in the presence of bacteria. The electrochemical results confirmed that DS1, DS3, DS4, and DS5 strains have statistically significant MIC-factors (Microbially Influenced Corrosion) of 5.46, 8.51, 2.36, and 1.04, while DS2 protective effect factor of 0.89. Weight reduction results with carbon steel likewise supports that corrosion was initiated by DS1 and DS3, while DS2 and DS5 have no any impact though with DS4 we watched less weight reduction however assumed no role in the corrosion. We established the relation of Peroxidase enzyme activity of the isolates. DS1. DS3 and having Peroxidase in the range 22.18, 19.54 U/ml which induce the corrosion whereas DS2 and DS5 having 28.57 and 27.0 U/ml has no any effect and DS4 36 U/ml has inhibitory effect, increasing concentration inhibiting the corrosion. For Catalase DS1, D33 have 67.28, 61.57 U/ml which induce corrosion while DS2 and DS5 57.71 and 59.14 U/ml also has no effect whereas DS4 70.14 U/ml can inhibit corrosion. Results clearly express that in a specific range both enzymes can induce the corrosion. Our goals are to pursuit and locate the potential role of the enzyme in corrosion induction and inhibition. There is still further work is proceeded for the more profound perception.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000413521700001
Citation statistics:
内容类型: 期刊论文
版本: 出版稿
URI标识: http://ir.qdio.ac.cn/handle/337002/143235
Appears in Collections:海洋腐蚀与防护研究发展中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao, Peoples R China
2.Natl Inst Technol, Dept Biotechnol, Raipur, Madhya Pradesh, India
3.Sardar Bhagwan Singh Post Grad Inst Biomed Sci &, Dept Biochem & Biotechnol, Dehra Dun, India

Recommended Citation:
Karn, Santosh K.,Fang, Guan,Duan, Jizhou. Bacillus sp Acting as Dual Role for Corrosion Induction and Corrosion Inhibition with Carbon Steel (CS)[J]. FRONTIERS IN MICROBIOLOGY,2017,8.
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