MICROBIAL ECOLOGY OF ACTIVATED SLUDGE. I. DOMINANT BACTERIA.

Applied microbiology ·Vol. 12 ·1964-09-00 ·Pages 412-7

DIAS FF, BHAT JV

Abstract

Over 300 bacterial strains were isolated from seven samples of activated sludge by plating on sewage agar. Gram-negative bacteria of the genera Zoogloea and Comamonas predominated. Many isolates (51%) showed sudanophilic inclusions of poly-beta-hydroxybutyric acid, whereas 34% accumulated iodophilic material on media containing starch. A large number required either vitamins or amino acids, or both, for growth. None of the isolates tested for their ability to bring about changes in autoclaved sewage produced an effluent comparable in quality to the activated sludge control, although the Zoogloea did produce activated sludgelike flocs. A study of 150 bacterial strains isolated from raw sewage revealed that they differed from the sludge isolates in several respects. Coliforms, which constitute nearly a quarter of the sewage isolates, were rarely encountered in sludge.

Keywords

ACHROMOBACTER AEROBACTER ALCALIGENES AMINO ACIDS BACILLUS BACTERIA BREVIBACTERIUM CORYNEBACTERIUM EXPERIMENTAL LAB STUDY FLAVOBACTERIUM HYDROXYBUTYRATES METABOLISM MICROCOCCUS PSEUDOMONAS SEWAGE SPIRILLUM VITAMINS YEASTS

MeSH Terms

Achromobacter Alcaligenes Amino Acids Bacillus Bacteria Brevibacterium Corynebacterium Enterobacter Flavobacterium Hydroxybutyrates Metabolism Micrococcus Polyesters Pseudomonas Research Sewage Spirillum Vitamins Yeasts Zoogloea

Chemicals

Amino Acids Hydroxybutyrates Polyesters Sewage Vitamins poly-beta-hydroxybutyrate

Authors & Affiliations

2 authors, click to expand affiliations / ORCID

DIAS F F

BHAT J V

References (12)

12 references, click to expand

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A taxonomic study of certain bacteria currently classified as Vibrio species.
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Metachromatic granules of microorganisms.
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Isolation of the floc-forming organism Zoogloea ramigera and its culture in complex and synthetic media.
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[Intensification of biochemical processes in the purification of industrial sewage. I. Microbiological characteristics of active silts purifying various types of industrial sewage].
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The taxonomic significance of fermentative versus oxidative metabolism of carbohydrates by various gram negative bacteria.
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Isolation and identification of the sudanophilic granules of Sphaerotilus natans.
J Bacteriol. 1962 Feb;83:343-7 PMID: 14494507
Occurrence of poly-beta-hydroxybutyrate in Pseudomonas pseudomallei.
J Bacteriol. 1960 Feb;79:305-6 PMID: 14416257
Isolation of floc-producing bacteria from activated sludge.
Appl Microbiol. 1953 Sep;1(5):259-61 PMID: 13092854
The isolation and estimation of the poly-beta-hydroxybutyrate inclusions of Bacillus species.
J Gen Microbiol. 1958 Aug;19(1):198-209 PMID: 13575768
Intracellular starch formation in corynebacteria.
J Bacteriol. 1962 May;83:1029-36 PMID: 13876866
Role of poly-beta-hydroxybutyric acid in the assimilation of organic carbon by bacteria.
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Article Info

Journal

Applied microbiology

Abbr.

Appl Microbiol

ISSN

0003-6919

DOI

10.1128/am.12.5.412-417.1964

Published

1964-09-00

Pages

412-7

Language

English

Region

United States

NLM ID

7605802

PMCID

PMC1058146

Subset

External Links

PubMed source DOI: 10.1128/am.12.5.412-417.1964 PMC Full Text

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