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作者:

Jia, Ru (Jia, Ru.) | Yang, Dongqing (Yang, Dongqing.) | Zlotkin, Amir (Zlotkin, Amir.) | Li, Yingchao (Li, Yingchao.) | Gu, Tingyue (Gu, Tingyue.)

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EI Scopus

摘要:

Microbiologically influenced corrosion (MIC) is caused by problematic biofilms in many industries, especially the oil and gas industry. In this work, a novel peptide (labeled as 'Peptide A') was used to enhance tetrakis hydroxymethyl phosphonium sulfate (THPS) biocide to treat the corrosive sulfate reducing bacterium (SRB) Desulfovibrio vulgaris and a tough field biofilm consortium (labeled as 'Consortium II') on C1018 carbon steel coupons. This peptide was synthesized based on the active sequence derived from an anti-biofilm protein produced by a sea anemone. Only 10 nM Peptide A or 18 ppb (w/w) was used in the biofilm prevention test and 10-100 nM was tested in the biofilm removal test. The cocktail of 50 ppm THPS + 10 nM Peptide A achieved 2 extra log reduction of SRB sessile cell count in the 7-day biofilm prevention test compared with 50 ppm THPS treatment alone. In the 3hour biofilm removal test that started with mature biofilms, the combination of 50 ppm THPS + 100 nM Peptide A achieved 2 extra log reduction compared with 50 ppm THPS treatment alone. Peptide A alone showed no log reduction in the mitigation of biofilm Consortium II. However, in the D. vulgaris biofilm removal test, 10 nM Peptide A achieved 1-log reduction and 100 nM achieved 2 logs. © 2017 by NACE International.

关键词:

Biocides Biofilms Biosynthesis Gas industry Microbial corrosion Peptides Petroleum industry Steel corrosion Sulfur compounds Testing

作者机构:

  • [ 1 ] [Jia, Ru]Dept. of Chemical and Biomolecular Engineering, Institute for Corrosion and Multiphase Technology, Ohio University, Athens; OH; 45701, United States
  • [ 2 ] [Yang, Dongqing]Dept. of Chemical and Biomolecular Engineering, Institute for Corrosion and Multiphase Technology, Ohio University, Athens; OH; 45701, United States
  • [ 3 ] [Zlotkin, Amir]Hutchison Water Israel Limited, 11 Galgalei Haplada Street, Herzelia; 46733, Israel
  • [ 4 ] [Li, Yingchao]College of Mechanical Engineering and Applied, Electronics Technology, Beijing University of Technology, Beijing; 100124, China
  • [ 5 ] [Gu, Tingyue]Dept. of Chemical and Biomolecular Engineering, Institute for Corrosion and Multiphase Technology, Ohio University, Athens; OH; 45701, United States

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ISSN: 0361-4409

年份: 2017

卷: 5

页码: 3579-3590

语种: 英文

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