Record Display for the EPA National Library Catalog


Main Title Bioflocculation and the accumulation of chemicals by floc-forming organisms /
Author Dugan, P. R. ; Dugan, P. R. (Patrick R.)
Publisher [Environmental Protection Agency], United States Government Printing Office,
Year Published 1975
Report Number EPA-600/2-75-032; EPA-17050-DFJ
Stock Number PB-245 793
OCLC Number 02589800
Subjects Biodegradation--By-products ; Sewage--Purification--Activated sludge process ; Flocculation ; Sedimentation and deposition
Additional Subjects Bacteria ; Water pollution control ; Organic wastes ; Aquatic microbiology ; Flocculating ; Aerobic processes ; Biodeterioration ; Biochemical oxygen demand ; Slimes ; Activated sludge process ; Industrial waste treatment ; Water treatment ; Adsorption ; Pseudomonadaceae ; Toxicity ; Polymers ; Radioactive waste processing ; Sewage treatment ; Taxonomy ; Metals ; Pesticides ; Colloids ; Demineralizing ; Eutrophication ; Biological industrial waste treatment ; Zoogloea ; Pseudomonas ; Acetobacter
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 600-2-75-032 Headquarters Library/Washington,DC 01/24/2014
EKBD  EPA-600/2-75-032 Research Triangle Park Library/RTP, NC 06/13/2003
ELBD ARCHIVE EPA 600-2-75-032 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ESAD  EPA 600-2-75-032 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-245 793 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation xii, 137 pages : illustrations ; 27 cm
Several floc-forming bacteria were isolated from polluted water by this and other laboratories. All organisms studied produced extracellular polymer fibrils that were related to slime matrix and flocculation. The extracellular polymers have high adsorption capacity for: soluble metal and other mineral ions, soluble organic nutrients (BOD), soluble toxic organics, insoluble mineral particles and insoluble organic particulates. The bacteria remove BOD by physical adsorption as well as by oxidative metabolism and can convert oxygen demanding organics to more extracellular polymer. Production of polymer can be stimulated nutritionally to yield amounts that have waste treatment-pollution abatement potential on a commercial scale. The relationship of bioflocculation to waste treatment and lake eutrophication is discussed and the basic mechanism of bioflocculation is considered. Biochemical activities of individual floc-forming cells is examined because of its relevance to polymer synthesis. Taxonomy of floc-formers is also considered in relationship to biochemical activities.
Report prepared by Department of Microbiology, Ohio State University, Columbus, Ohio, under Grant no. 17050 DFJ; Program element no. 1BB043. Municipal Environmental Research Laboratory, Office of Research and Development, Cincinnati, Ohio. "Grant 17050 DFJ, program element 1 BB 043. Includes list of publications and published abstracts." Includes bibliographical references (pages 126-133). For sale by the National Technical Information Service, (Price upon application). 4to.