Cleaning oil-contaminated vessels with .alpha.-emulsans

Details Cleaning oil-contaminated vessels with .alpha.-emulsans Cleaning oil-contaminated vessels with .alpha.-emulsans

1979-12-21

1981-06-30

Caroff, Marc L.

Cleaning and liquid contact with solids

Processes

Including regeneration, purification, recovery or separation...

134 22R, 134 22C, 134 40, B08B 900

Patent

active

042760941

ABSTRACT:
Growth of Acinitobacter Sp. ATCC 31012 on certain substrates produces a new class of extracellular microbial protein-associated lipopolysaccharides (the ".alpha.-emulsans"). .alpha.-Emulsans exhibit a high degree of specificity in the emulsification of hydrocarbon substrates which contain both aliphatic and aromatic or cyclic components, which are typical of the hydrocarbonaceous residues found in oil-contaminated vessels, such as tankers, barges, storage tanks, tank cars and trucks, pipelines and other oil-contaminated containers used to transport or store crude oil in petroleum fractions. These oil-contaminated vessels may be cleaned by washing the oil-contaminated surfaces of such vessels with an aqueous solution in sea water or fresh water containing from about 10 mcg/ml to about 20 mg/ml of .alpha.-emulsans and from about 5 mM or higher of at least one divalent cation, thereby forming an oil-in-water emulsion of such hydrocarbonaceous residues from which the oil may be recovered for fuel value or for refining.

REFERENCES:
patent: 2742398 (1956-04-01), Zobell
patent: 3769164 (1973-10-01), Azarowicz
patent: 3871956 (1975-03-01), Azarowics
patent: 3941692 (1976-03-01), Gutnick et al.
patent: 3997398 (1976-12-01), Zajic et al.
Horowitz et al., Appl. Microbiol., "Sequential Growth of Bacteria on Crude Oil", vol. 30 (No. 1), Jul. 1975, pp. 10-19.

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