Predominant bacteria in an activated sludge reactor for the degradation of cutting fluids

Journal Article · Sat Jan 01 00:00:00 EST 1983 · Appl. Environ. Microbiol.; (United States)

OSTI ID:5982853

Baker, C A; Claus, G W; Taylor, P A

For the first time, an activated sludge reactor, established for the degradation of cutting fluids, was examined for predominant bacteria. In addition, both total and viable numbers of bacteria in the reactor were determined so that the percentage of each predominant type in the total reactor population could be determined. Three samples were studied, and a total of 15 genera were detected. In each sample, the genus Pseudomonas and the genus Microcyclus were present in high numbers. Three other genera, Acinetobacter, Alcaligenes, and Corynebacterium, were also found in every sample but in lower numbers. In one sample, numerous appendage bacteria were present, and one of these, the genus Seliberia, was the most predominant organism in that sample. However, in the other two samples no appendage bacteria were detected. Six genera were found in this reactor which have not been previously reported in either cutting fluids in use or in other activated sludge systems. These genera were Aeromonas, Hyphomonas, Listeria, Microcyclus, Moraxella, and Spirosoma. None of the predominant bacterial belonged to groups of strict pathogens. 22 references, 6 figures, 3 tables.

• Research Organization: Virginia Polytechnic Inst. and State Univ., Blacksburg
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5982853
• Journal Information: Appl. Environ. Microbiol.; (United States), Vol. 46:5
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BACTERIA
GROWTH
CUTTING FLUIDS
BIODEGRADATION
ACTIVATED SLUDGE PROCESS
POPULATION DENSITY
SPECIES DIVERSITY
CHEMICAL REACTIONS
DECOMPOSITION
FLUIDS
MANAGEMENT
MICROORGANISMS
PROCESSING
WASTE MANAGEMENT
WASTE PROCESSING
560302* - Chemicals Metabolism & Toxicology- Microorganisms- (-1987)