Archaebacterial Involvement in Microbial Metal Corrosion

Abstract

Our objectives have been to understand the role that methanogenic bacteria play in metal corrosion. We have demonstrated their ability to use Fe, A1, Zn, Co and Ni (to some degree) as electron donors in methanogenesis, which suggests their possible role in biocorrosion; we have further studied the environmental conditions affecting the rates of metal oxidation. We have also studied key methanogenic enzymes involving in electron consumption (format dehydrogenase, hydrogenase and methylene THMP Dehydrogenase). The effects of alkyl tins on methanogens was examined, due to the use of one such compound, tributyl tin, in anticorrosion paints as a biocide. We find that many organotins are more toxic to methanogens than tributyl tin and that the relationship of hydrophobicity of the organotin to toxicity is quite different than observed by others in studies of aerobic organisms. Keywords: Biocorrosion; Marine biotechnology.

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Document Details

Document Type
Technical Report
Publication Date
Mar 19, 1990
Accession Number
ADA219982

Entities

People

  • Lacy Daniels

Organizations

  • University of Iowa

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Anaerobic Bacteria
  • Bacteria
  • Classification
  • Contracts
  • Corrosion
  • Electron Donors
  • Electron Transfer
  • Electrons
  • Elements
  • Hydrogen
  • Inhibition
  • Microbiology
  • Microorganisms
  • Military Research
  • Students
  • Tributyl Tin
  • Universities

Fields of Study

  • Biology

Readers

  • Microbial Pathology
  • Organic Chemistry
  • Surface Coatings Technology.

Technology Areas

  • Biotechnology
  • Microelectronics