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Bacterial metabolism of chlorinated dehydroabietic acids occurring in pulp and paper mill effluents

Applied and Environmental Microbiology, 1997-08, Vol.63 (8), p.3014-3020 [Peer Reviewed Journal]

1997 INIST-CNRS ;Copyright American Society for Microbiology Aug 1997 ;ISSN: 0099-2240 ;EISSN: 1098-5336 ;DOI: 10.1128/AEM.63.8.3014-3020.1997 ;PMID: 16535663 ;CODEN: AEMIDF

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  • Title:
    Bacterial metabolism of chlorinated dehydroabietic acids occurring in pulp and paper mill effluents
  • Author: Mohn, W.W ; Stewart, G.R
  • Subjects: Acids ; Biological and medical sciences ; Biology of microorganisms of confirmed or potential industrial interest ; Biotechnology ; environmental degradation ; Environmental protection ; forest products ; forestry ; Fundamental and applied biological sciences. Psychology ; Industrial wastes ; Mission oriented research ; Physiology and metabolism ; pollution ; pulp and paper products ; Pulp mills ; waste management
  • Is Part Of: Applied and Environmental Microbiology, 1997-08, Vol.63 (8), p.3014-3020
  • Description: Chlorinated dehydroabietic acids are formed during the chlorine bleaching of wood pulp and are very toxic to fish. Thus, destruction of these compounds is an important function of biological treatment systems for pulp and paper mill effluents. In this study, 12 strains of diverse, aerobic resin acid-degrading bacteria were screened for the ability to grow on on chlorinated dehydroabietic acids as sole organic substrates. All seven strains of the class Proteobacteria able to use dehydroabietic acid were also able to use a mixture of 12- and 14-chlorodehydroabietic acid (Cl-DhA). None of the strains used 12,14-dichlorodehydroabietic acid. Sphingomonas sp. strain DhA-33 grew best on Cl-DhA-33 simultaneously removed both Cl-DhA isomers. Ralstonia sp. strain BKME-6 was typical of most of the strains tested, growing more slowly on Cl-DhA and leaving higher residual concentrations of Cl-DhA than DhA-33 did. Strains DhA-33 and BKME-6 mineralized (converted to CO2 plus biomass) 32 and 43%, respectively, of carbon in Cl-DhA consumed. Strain DhA-33 produced a metabolite from Cl-DhA, tentatively identified as 3-oxo-14-chlorodehydroabietin, and both strains produced dissolved organic carbon which may include unidentified metabolites. Cl-DhA removal was inducible in both DhA-33 and BKME-6, and induced DhA-33 cells also removed 12,14-dichlorodehydroabietic acid. Based on activities of strains DhA-33 and BKME-6, chlorinated DhAs, and potentially toxic metabolite(s) of these compounds, are relatively persistent in biological treatment systems and in the environment.
  • Publisher: Washington, DC: American Society for Microbiology
  • Language: English
  • Identifier: ISSN: 0099-2240
    EISSN: 1098-5336
    DOI: 10.1128/AEM.63.8.3014-3020.1997
    PMID: 16535663
    CODEN: AEMIDF
  • Source: PubMed Central
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