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https://hdl.handle.net/1822/3664
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Campo DC | Valor | Idioma |
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dc.contributor.author | Neves, L. | - |
dc.contributor.author | Ribeiro, R. | - |
dc.contributor.author | Oliveira, Rosário | - |
dc.contributor.author | Alves, M. M. | - |
dc.date.accessioned | 2005-12-16T12:51:10Z | - |
dc.date.available | 2005-12-16T12:51:10Z | - |
dc.date.issued | 2005 | - |
dc.identifier.citation | INTERNATIONAL IWA SYMPOSIUM ON ANAEROBIC DIGESTION OF SOLID WASTE, 4, Copenhagen, 2005 - "Proceedings Fourth International IWA Symposium on Anaerobic Digestion of Solid Waste". Copenhagen : Technical University of Denmark, 2005. vol 1, p. 527-534. | eng |
dc.identifier.uri | https://hdl.handle.net/1822/3664 | - |
dc.description.abstract | The anaerobic co-digestion of five different by-products from instant coffee substitutes production was studied in mesophilic conditions. The co-substrate was the excess of sewage sludge from the wastewater treatment plant located in the same coffee factory. Four of the tested wastes produced methane in the range of 0.24-0.28 m³CH4(STP)/kgVSinitial . Reduction of 50-73% in total solids and 75-80% in volatile solids were obtained and the hydrolysis rate constants were in the range of 0.035-0.063 dֿ¹. After 40 days, one waste, composed of 100% barley, achieved a methane yield as low as 0.02 m³CH4(STP)/kgVSinitial and 31% and 40% total and volatile solids reduction, respectively,. Two different strategies were applied to enhance the biodegradability of this waste. An alkaline hydrolysis pre-treatment, that increased the methane production up to 0,22 m³CH4(STP)/kgVSinitial and the total and volatile solids reductions up to 67 and 84%, respectively. A co-digestion with kitchen waste, that increased the methane production up to 0,36 m³CH4(STP)/kgVSinitial and the total and volatile solids reductions up to 61 and 67%, respectively. | eng |
dc.language.iso | eng | eng |
dc.rights | openAccess | eng |
dc.subject | Alkaline hydrolysis pre-treatment | eng |
dc.subject | Biogas | eng |
dc.subject | Hydrolysis rate constant | eng |
dc.subject | Instant coffee substitutes | eng |
dc.subject | Kitchen waste | eng |
dc.title | Anaerobic digestion of coffee waste | eng |
dc.type | conferencePaper | eng |
dc.peerreviewed | yes | eng |
Aparece nas coleções: | CEB - Artigos em Livros de Atas / Papers in Proceedings |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Anaerobic Digestion of Coffee waste-adsw-ab-121[1].pdf | 229,16 kB | Adobe PDF | Ver/Abrir |