Document Detail

New low-temperature applications of anaerobic wastewater treatment.
MedLine Citation:
PMID:  16702065     Owner:  NLM     Status:  MEDLINE    
Low-temperature or psychrophilic (<20 degrees C) anaerobic biological treatment of simple industrial wastewaters has recently been proven feasible as an alternative to more expensive mesophilic (ca. 37 degrees C) technology. We implemented novel expanded granular sludge bed (EGSB)-based bioreactor designs for 27 psychrophilic anaerobic digestion (PAD) trials for the treatment of a broad range of simple and complex synthetic wastewaters representing dairy, food-processing and pharmaceutical sector effluents. A variety of operating parameters, such as hydraulic retention time, organic and volumetric loading rates and upflow velocity, were tested. Chemical oxygen demand (COD) removal efficiencies were recorded, which were comparable to previous mesophilic trials. Specific methanogenic activity, toxicity and biodegradability batch assays were employed to monitor the metabolic capabilities of microbial consortia in anaerobic reactors. The prevalence of psychrotolerant communities was observed and psychrophilic populations were detected in two of the reactors. The potential of PAD with respect to global sustainable development is discussed.
Gavin Collins; Sharon McHugh; Sean Connaughton; Anne-Marie Enright; Aileen Kearney; Colm Scully; Thérèse Mahony; Pádhraig Madden; Vincent O'Flaherty
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering     Volume:  41     ISSN:  1093-4529     ISO Abbreviation:  J Environ Sci Health A Tox Hazard Subst Environ Eng     Publication Date:  2006  
Date Detail:
Created Date:  2006-05-16     Completed Date:  2006-08-25     Revised Date:  2009-08-14    
Medline Journal Info:
Nlm Unique ID:  9812551     Medline TA:  J Environ Sci Health A Tox Hazard Subst Environ Eng     Country:  United States    
Other Details:
Languages:  eng     Pagination:  881-95     Citation Subset:  IM    
Microbial Ecology Laboratory, Department of Microbiology and Environmental Change Institute (ECI), National University of Ireland, Galway (NUI, Galway), University Road, Galway, Ireland.
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MeSH Terms
Biodegradation, Environmental
Cold Temperature*
Industrial Microbiology / methods*
Methane / chemistry,  metabolism
Oxygen / chemistry,  metabolism
Sewage / chemistry,  microbiology*
Time Factors
Waste Disposal, Fluid / methods*
Reg. No./Substance:
0/Sewage; 74-82-8/Methane; 7782-44-7/Oxygen

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