|
|
|
| COMPOSITION OF BACTERIA IN CORROSION PRODUCT OF CARBON STEEL WITH DIFFERENT CARBON CONTENT IMMERSED IN SEAWATER FOR DIFFERENT TIME |
| YANG Yuhui1,2, XIAO Weilong1, CHAI Ke1, WU Jinyi1 |
1. Key Laboratory of Ministry of Education for Application Technology of Chemical Materials in Hainan Superior Resources, Material and Chemical Engineering College, Hainan University, Haikou 570228
2. Agricultural College, Hainan University, Haikou 570228 |
|
|
|
|
Abstract Bacterial adhesion and biofilm formation on the surface of carbon steel are common in seawater. The heterogeneous biofilm and the associated bacteria form complex biological systems that impact the physical and chemical characters of the metal/biofilm interface, such as pH, dissolved oxygen, chloride and sulfate, etc., and change the corrosion mechanism of carbon steel. Accordingly, it is important to investigate the bacteria composition in the corrosion product of carbon steel. In this work, the bacteria compositions in the corrosion product of different carbon steel emerged in seawater for different periods were researched by bacteria isolating and identifying methods. The results show that the contents of aerobe and facultative anaerobe reach the maximum value when the corrosion time is 91 d. However, the content of sulfate reducing bacteria reaches the maximum value when the corrosion time is 184 d. The contents of iron bacteria and sulfur bacteria change irregularly. For different carbon steel, except 7 d corrosion time, the contents of aerobe and facultative anaerobe in biofilm increase with increasing the content of carbon, but that of sulfate reducing bacteria descends. Aerobe and facultative anaerobe mainly compose pseudomonas and vibrio. When the corrosion time is 365 d, flavobacterium also exists in the corrosion product. The aerobe is predominant in the initial stage of experiment and facultative anaerobe is predominant in later stage. The major composition of iron bacteria includes naumanniella and siderocapsa. The different bacteria produce the different metabolic products that influence corrosion process of carbon steel.
|
|
Received: 13 May 2010
|
|
|
|
Corresponding Authors:
WU Jinyi
E-mail: wujinyi1976@yahoo.com.cn
|
| [1] Dexter S C, LaFontaine J P. Effect of natural marine biofilms on galvanic corrosion [J]. Corrosion,1998, 54(11): 851-861[2] Jahn A, Nielsen P H. Cell bimass and exopolymer composition in sewer biofilms [J]. Wat. Sci.Technol., 1998, 37(1): 17-24[3] Mathiyarasu J, Palaniswamy N, Muralidharan V S. Corrosion resistance of cupronickels-An overview [J].Corros. Rev., 2000, 18(1): 65-103[4] Busalmen J P, Vazquez M, de Sanchez S R. New evidences on the catalase mechanism of microbial corrosion [J]. Electrochim. Acta, 2002, 47(12): 1857[5] de Damborenea J J, Cristobal A B, Arenas M A, et al. Selective dissolution of austenite in AISI 304 stainless steel by bacterial activity [J]. Mater.Lett., 2007, 61(3): 821-823[6] Mansfeld F, Little B. Electrochemical techniques applied to microbiologically induced corrosion [J].Corros. Sci., 1991, 32(3): 247-272[7] Wu J Y, Chai K, Xiao W L, et al. The single effect of microbe on the corrosion behaviors of 25 steel in seawater [J]. Acta Metall. Sin., 2010,46(6): 755-760 (吴进怡, 柴柯, 肖伟龙等. 25钢在海水中的微生物单因素腐蚀 [J]. 金属学报, 2010, 46(6): 755-760)[8] Jung H G, Yoo J Y, Woo J S. The microbiologically influenced corrosion behavior of C-Mn ship structural steel with different manufacturing processes [J]. ISIJ Int., 2003, 43(10): 1603-1610[9] Liu D Y, Wei K J, Li W J, et al. Influence of environmental factors in Yulin area of the south china sea on localized corrosion of steels [J]. J.Chin. Soc. Corros. Prot., 2003, 23(4): 211-216 (刘大扬, 魏开金, 李文军等. 南海榆林海域环境因素对 钢局部腐蚀的影响 [J]. 中国腐蚀与防护学报, 2003, 23(4): 211-216)[10] Cristobal A B, Arenas M A, Conde A, et al. Corrosion of stainless steels covered by exopolymers [J]. Electrochim. Acta, 2006, 52: 546-551[11] Sand W. Microbial mechanisms of deterioration of inorganic substrates--A general mechanistic overview [J]. Int. Biodeterior. Biodegrad., 1997,40: 183-190[12] Wang Q F, Song S Z. Progress in marine biologically influenced corrosion study [J]. J. Chin.Soc. Corros. Prot., 2002, 22(3): 184-188 (王庆飞, 宋诗哲. 金属材料海洋环境生物污损腐蚀研究进展 [J]. 中国腐蚀与防护学报, 2002, 22(3): 184188)[13] Buchanan R E, Gibbons N E. Bergey's Manual of Determinative Bacteriology 8th Ed., [M]. Baltimore, Maryland: The Williams and Wilkins Company, 1974, 7[14] Li H R, Fu Y B, Li J, et al. Composition of marine bacteria in micro-biofilm formed on four different artificial substrata [J]. J. Ocean Univ. Qingdao, 2001, 31(3): 401-406 (李会荣, 付玉斌, 李筠等. 海洋细菌在不同基质表面微生物粘膜中的组成 [J]. 青岛海洋大学学报,2001, 31(3): 401-406)[15] Sreekumari K R, Nandakumar K, Takao K, et al.Silver containing stainless steel as a new outlook to abate bacterial adhesion and microbiologically influenced corrosion [J]. ISIJ Int., 2003, 43(11): 1799-1806[16] Wu J Y, Xiao W L, Chai K, et al. The single effect of microbe on the corrosion behaviors of 45 steel in seawater in tropic condition [J]. Acta Metall. Sin., 2010, 46(1): 118-122 (吴进怡, 肖伟龙, 柴柯等. 热带海洋环境下海水中微生物对45钢腐蚀行为的单因素影响 [J]. 金属学报, 2010,46(1): 118-122) |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
