Document Detail


Treatment of screened dairy manure by upflow anaerobic fixed bed reactors packed with waste tyre rubber and a combination of waste tyre rubber and zeolite: effect of the hydraulic retention time.
MedLine Citation:
PMID:  18280149     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Two laboratory-scale anaerobic fixed bed reactors were evaluated while treating dairy manure at upflow mode and semicontinuous feeding. One reactor was packed with a combination of waste tyre rubber and zeolite (R1) while the other had only waste tyre rubber as a microorganism immobilization support (R2). Effluent quality improved when the hydraulic retention time (HRT) increased from 1.0 to 5.5 days. Higher COD, BOD5, total and volatile solids removal efficiencies were always achieved in the reactor R1. No clogging was observed during the operation period. Methane yield was also a function of the HRT and of the type of support used, and was 12.5% and 40% higher in reactor R1 than in R2 for HRTs of 5.5 and 1.0 days, respectively. The results obtained demonstrated that this type of reactor is capable of operating with dairy manure at a HRT 5 times lower than that used in a conventional reactor.
Authors:
Oscar Umaña; Svetlana Nikolaeva; Enrique Sánchez; Rafael Borja; Francisco Raposo
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Publication Detail:
Type:  Journal Article     Date:  2008-02-14
Journal Detail:
Title:  Bioresource technology     Volume:  99     ISSN:  0960-8524     ISO Abbreviation:  Bioresour. Technol.     Publication Date:  2008 Oct 
Date Detail:
Created Date:  2008-06-03     Completed Date:  2008-09-03     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  7412-7     Citation Subset:  IM    
Affiliation:
Laboratorio de Materiales Industriales (LAMI), Universidad Nacional de Costa Rica (UNA), P.O. Box 86-3000, Heredia, Costa Rica.
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MeSH Terms
Descriptor/Qualifier:
Anaerobiosis*
Animals
Bioreactors*
Cattle
Dairying*
Manure*
Rubber / chemistry*
Zeolites / chemistry*
Chemical
Reg. No./Substance:
0/Manure; 1318-02-1/Zeolites; 9006-04-6/Rubber

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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