Document Detail

Nitrogen removal from aquaculture pond water by heterotrophic nitrogen assimilation in lab-scale sequencing batch reactors.
MedLine Citation:
PMID:  18842400     Owner:  NLM     Status:  MEDLINE    
The potential use of sequencing batch reactors (SBRs) as an alternative bio-flocs technology (BFT) approach in aquaculture was explored. One SBR was dosed with glycerol and one with acetate for the decrease of the nitrogen concentration in simulated aquaculture water by microbial assimilation. At an optimal C/N ratio between 10 and 15, the nitrogen removal efficiency reached up to 98% (=110 mg N L(-1) reactor day(-1)) for both SBRs. The estimated biomass productivity reached 0.62-0.94 g C L(-1)r eactor day(-1) for the glycerol SBR and 0.54-0.82 g C L(-1) reactor day(-1) for the acetate SBR. The floc protein content, indicating biomass quality, reached up to 57% if grown on glycerol. With acetate, it attained a value of 61%. The highest average poly-beta-hydroxybutyrate (PHB) content was 16% on a dry weight basis for the acetate biomass.
Peter De Schryver; Willy Verstraete
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-10-07
Journal Detail:
Title:  Bioresource technology     Volume:  100     ISSN:  1873-2976     ISO Abbreviation:  Bioresour. Technol.     Publication Date:  2009 Feb 
Date Detail:
Created Date:  2008-11-12     Completed Date:  2008-12-29     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  1162-7     Citation Subset:  IM    
Laboratory of Microbial Ecology and Technology, Ghent University, Ghent, Belgium.
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MeSH Terms
Aquaculture / instrumentation*
Bacteria, Anaerobic / metabolism*
Bioreactors / microbiology*
Equipment Design
Equipment Failure Analysis
Fresh Water / microbiology*
Nitrogen / isolation & purification,  metabolism*
Pilot Projects
Water Pollutants, Chemical / isolation & purification,  metabolism*
Water Purification / instrumentation*
Reg. No./Substance:
0/Water Pollutants, Chemical; 7727-37-9/Nitrogen

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