Document Detail

Improved aerobic biodegradation of abietic acid in ECF bleached kraft mill effluent due to biomass adaptation.
MedLine Citation:
PMID:  16386835     Owner:  NLM     Status:  MEDLINE    
Kraft pulp mill effluents contain elevated concentrations of resin acids, chiefly abietic and dehydroabietic acid, and other lipophilic wood constituents. Resin acids, if not efficiently removed during wastewater treatment, can be responsible for chronic toxicity in aquatic systems. The objective of this study was to investigate the biological removal of abietic acid (AbA) during the treatment of elemental chlorine free (ECF) kraft mill effluents in aerobic lagoons and to assess its improvement with time as a result of biomass adaptation. Under these conditions, the average removal efficiencies of AbA and BOD(5) attained in the aerobic lagoon were high and exceeded 80% and 95%, respectively. Microbial inhibition of non-acclimated and acclimated biomass by AbA was not detected in batch bioassays. Kinetic studies showed that the K(s) and V(m) values equalled 76.7 mg AbA/l and 0.011 l/h, respectively, for the non-acclimated biomass, and 1678 mg AbA/l and 0.13 l/h, respectively, for the acclimated biomass.
M Belmonte; C Xavier; J Decap; M Martinez; R Sierra-Alvarez; G Vidal
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-01-18
Journal Detail:
Title:  Journal of hazardous materials     Volume:  135     ISSN:  0304-3894     ISO Abbreviation:  J. Hazard. Mater.     Publication Date:  2006 Jul 
Date Detail:
Created Date:  2006-05-30     Completed Date:  2006-10-26     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9422688     Medline TA:  J Hazard Mater     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  256-63     Citation Subset:  IM    
Environmental Science Centre, EULA-Chile, Universidad de Concepcion, P.O. Box 160-C, Concepcion, Chile.
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MeSH Terms
Acids / chemistry
Biodegradation, Environmental
Chlorine / chemistry*
Diterpenes, Abietane / metabolism*
Phenanthrenes / metabolism*
Water Pollutants, Chemical / metabolism
Reg. No./Substance:
0/Acids; 0/Diterpenes, Abietane; 0/Phenanthrenes; 0/Water Pollutants, Chemical; 514-10-3/abietic acid; 7782-50-5/Chlorine

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