MECHANISM OF MICROBIOLOGICAL CONTAMINATION OF JET FUEL AND DEVELOPMENT OF TECHNIQUES FOR DETECTION OF MICROBIOLOGICAL CONTAMINATION. PART II. THE ROLE OF MICROORGANISMS IN ALUMINUM CORROSION, EMULSION FORMATION, SLUDGE FORMATION AND SEALANT DEGRADATION
Abstract
Progress has been made in defining the role that microorganisms can play in the processes of aluminum alloy corrosion, emulsion formation, sludge formation, and sealant and topcoat degradation during the oxidation of jet fuel hydrocarbons for growth. It was demonstrated that bacteria can cause aerobic aluminum alloy corrosion by changing the ionic composition of the growth medium, by growth in proteinaceous media, and by bringing about corrosion in media containing electron mediators coupled to cell metabolism. Fractionation of growth media made corrosive by microorganisms growing on fuel has yielded two particularly corrosive fractions; one fraction contains cations and the other fraction contains colored organic compounds. Fungi caused corrosion by concentrating corrosive metals, i.e., copper and iron, in their mycelium. This metal reacted with aluminum when organisms were deposited upon it. Fungi also caused corrosion by their ability to penetrate coatings, thus exposing the aluminum to corrosive growth media.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1966
- Accession Number
- AD0479104
Entities
People
- Charles R. Goucher
- Gordon C. Blanchard
Organizations
- Melpar