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https://hdl.handle.net/1822/7124
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Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Gonçalves, M. M. | - |
dc.contributor.author | Bastos, E. | - |
dc.contributor.author | Alves, M. M. | - |
dc.contributor.author | Correia, J. P. | - |
dc.contributor.author | Marques, I. P. | - |
dc.date.accessioned | 2007-11-12T17:57:35Z | - |
dc.date.available | 2007-11-12T17:57:35Z | - |
dc.date.issued | 2006-11 | - |
dc.identifier.citation | "Environmental Technology". ISSN 0959-3330. 27:11 (Nov. 2006) 1289-1295. | eng |
dc.identifier.issn | 0959-3330 | eng |
dc.identifier.uri | https://hdl.handle.net/1822/7124 | - |
dc.description.abstract | Electrochemical pre-treatment of oleate on anaerobic digestion was investigated using two anaerobic filters (AF and AFm) working, respectively, with increasing concentrations of electrochemically pre-treated oleate and oleate. Influents containing 25% and 50% of chemical oxygen demand (COD) of these substrates did not cause relevant alterations in either digester's performance. Comparatively, the pre-treated oleate unit (AF) showed a higher gas production but a lower COD removal than AFm (2.0 vs 1.5 m3 CH4 m−3 d−1; 76-85 vs 91-93% COD removal). The raised AFm COD removal together with the larger proportion of VSS in its effluent than in AF (5.69 vs 0.26 kg m−3) indicate that the biomass washout can be a consequence of the encapsulated solids by lipidic compounds that were not fairly degraded. Further increases of oleate in AFm feed (75 and 100% COD) led to decreases of biogas production to half and COD removal from values higher than 90% to 83-75%. The simultaneous increase of effluent VSS concentrations to 10-12 kg m−3 emphasizes the oleate negative effect. The use of pre-treated oleate as the only carbon source did not influence negatively the AF behaviour in terms of methane production. COD removal was maintained at values higher than 80% and the effluent VSS at low concentrations (0.15 kg m−3). The significantly higher methane yield achieved by AF than AFm indicates a higher accumulation of oleate than pre-treated oleate. Therefore, electrochemical process stands for a suitable pre-treatment for lipid rich effluents, allowing the application of higher organic loads keeping a higher methane yield. | eng |
dc.description.sponsorship | Fundação para a Ciência e a Tecnologia (FCT Eltech Systems Corporation. | por |
dc.language.iso | eng | eng |
dc.publisher | Selper | eng |
dc.rights | openAccess | eng |
dc.subject | Electroxidation of oleic acid | eng |
dc.subject | Anaerobic treatment | eng |
dc.subject | Lipids | eng |
dc.subject | Oleate | eng |
dc.subject | Anaerobic filter | eng |
dc.subject | electrooxidation of oleic acid | por |
dc.title | Effect of electrochemical treatment of oleic acid on anaerobic digestion | eng |
dc.type | article | por |
dc.peerreviewed | yes | eng |
sdum.number | 11 | eng |
sdum.pagination | 1289-1295 | eng |
sdum.publicationstatus | published | eng |
sdum.volume | 27 | eng |
oaire.citationStartPage | 1289 | por |
oaire.citationEndPage | 1295 | por |
oaire.citationIssue | 11 | por |
oaire.citationVolume | 27 | por |
dc.identifier.doi | 10.1080/09593332708618745 | por |
dc.identifier.pmid | 17203612 | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Environmental Technology | por |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |