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Please use this identifier to cite or link to this item: http://hdl.handle.net/10651/29083

Title: Anaerobic thermophilic treatment of cattle manure in UASB reactors
Author(s): Castrillón Peláez, Leonor
Vázquez, Ignacio
Marañón Maison, María Elena
Sastre Andrés, Herminio
Keywords: Cattle manure
Anaerobic thermophilic treatment
Upflow anaerobic sludge blanket (UASB)
Issue date: 2002
Publisher: Sage
Publisher version: http://dx.doi.org/10.1177/0734247X0202000406
Citation: Waste Management & Research, 20(4), p. 350-356 (2002); doi:10.1177/0734247X0202000406
Format extent: p. 350-356
Abstract: Cattle manure was characterised after filtration through a 1-mm sieve and subsequently treated in a 9-l volume UASB reactor made of transparent PVC at a thermophilic temperature (55°C). Different Hydraulic Retention Times (22.5, 16, 10.6, 8.9 and 7.3 days) were employed and organic matter, total solids and metals were determined,as was the production of biogas. After screening,the COD of the manure subjected to anaerobic thermophilic treatment varied between values of 33,382 and 45,513 mgO2 l–1. The highest percentage of COD removal obtained was 79.7% for an HRT of 22.5 days and there was a fraction refractory to Biodegradation of 11%, calculated using Chen & Hashimoto’s model. Finally, the results obtained at a thermophilic temperature were compared with those obtained at a mesophilic temperature (obtained in a previous work). The reduction in COD was slightly greater under mesophilic conditions, though the main advantage of thermophilic anaerobic treatment is the faster inactivation of viruses and bacteria.
URI: http://hdl.handle.net/10651/29083
ISSN: 0734-242X
1096-3669
Appears in Collections:Artículos
Ingeniería Química y Tecnología del Medio Ambiente

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