The effect of a biofilm-forming bacterium Tenacibaculum mesophilum D-6 on the passive film of stainless steel in the marine environment

Dong，Yuqiao1; Feng，Danqing2; Song，Guang Ling1,3,4; Su，Pei2; Zheng，Dajiang1

2022-04-01

10.1016/j.scitotenv.2021.152909

SCIENCE OF THE TOTAL ENVIRONMENT   影响因子和分区

0048-9697

1879-1026

The microbiologically influenced corrosion of 304 stainless steel in the presence of a marine biofilm-forming bacterium Tenacibaculum mesophilum D-6 was systematically investigated by means of electrochemical techniques and surface analyses to reveal the effect of the selective attachment and adsorption of the biofilms on the passivity breakdown of the stainless steel. It was found that the T. mesophilum D-6 was electroactive and could oxidize low valent cations and metal, facilitating the local dissolution of the passive film and the substrate in the film defects, nearly doubling the surface roughness. The biofilms of T. mesophilum D-6 with mucopolysaccharide secreta and chloride ions tended to preferentially adsorb at the defects of the passive film on the steel, yielding non-homogeneous microbial aggregates and local Cl enrichment there. The adsorption of the bacteria and chloride ions reduced the thickness of passive film by 23.9%, and generate more active sites for pitting corrosion on the passive film and more semiconducting carrier acceptors in the film. The maximum current density of the 304 SS in the presence of T. mesophilum D-6 was over one order of magnitude higher than that in the sterile medium, and the largest pit was deepened 3 times.

Biofilm-forming bacterium Failure mechanism In situ Raman spectroscopy Passive film Scanning vibration electrochemical technique

SCI ; EI

英语

其他

National Key Research and Development Program of China[2017YFB0702100] ; National Natural Science Foundation of China[51731008,51671163,51901198]

Environmental Sciences & Ecology

Environmental Sciences

WOS:000767231800012

ELSEVIER

20220311466504

Biofilms ; Chlorine compounds ; Failure (mechanical) ; Pitting ; Seawater corrosion ; Steel corrosion ; Surface roughness

Biomaterials (including synthetics):462.5 ; Seawater, Tides and Waves:471.4 ; Metals Corrosion:539.1 ; Steel:545.3 ; Physical Properties of Gases, Liquids and Solids:931.2

ENVIRONMENT/ECOLOGY

2-s2.0-85122657122

Scopus

1.Center for Marine Materials Corrosion and Protection,College of Materials,Xiamen University,Xiamen,361005,China
2.State-Province Joint Engineering Laboratory of Marine Bioproducts and Technology,College of Ocean and Earth Sciences,Xiamen University,Xiamen,361102,China
3.Department of Ocean Science and Engineering,Southern University of Science and Technology,China
4.The University of Queensland,School of Mechanical and Mining Engineering,Division of Materials Engineering,St Lucia,4072,Australia

Dong，Yuqiao,Feng，Danqing,Song，Guang Ling,et al. The effect of a biofilm-forming bacterium Tenacibaculum mesophilum D-6 on the passive film of stainless steel in the marine environment[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,815.

Dong，Yuqiao,Feng，Danqing,Song，Guang Ling,Su，Pei,&Zheng，Dajiang.(2022).The effect of a biofilm-forming bacterium Tenacibaculum mesophilum D-6 on the passive film of stainless steel in the marine environment.SCIENCE OF THE TOTAL ENVIRONMENT,815.

Dong，Yuqiao,et al."The effect of a biofilm-forming bacterium Tenacibaculum mesophilum D-6 on the passive film of stainless steel in the marine environment".SCIENCE OF THE TOTAL ENVIRONMENT 815(2022).