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Please use this identifier to cite or link to this item: http://hdl.handle.net/10651/29088

Title: Anaerobic Mesophilic Treatment of Cattle Manure in an Upflow Anaerobic Sludge Blanket Reactor with Prior Pasteurization
Author(s): Marañón Maison, María Elena
Castrillón Peláez, Leonor
Fernández, Juan José
Fernández Nava, Yolanda
Peláez Andrés, Ana Isabel
Sánchez Martín, Jesús
Keywords: Anaerobic treatment
Cattle manure
UASB
Pasteurization
Issue date: 2006
Publisher: Taylor & Francis
Publisher version: http://dx.doi.org/10.1080/10473289.2006.10464448
Citation: Journal of the Air & Waste Management Association, 56(2), p. 137-143 (2006); doi:10.1080/10473289.2006.10464448
Format extent: p. 137-143
Abstract: Different autonomous communities located in northern Spain have large populations of dairy cattle. In the case of Asturias, the greatest concentration of dairy farms isfound in the areas near the coast, where the elimination of cattle manure by means of its use as a fertilizer may lead to environmental problems. The aim of the present research work was to study the anaerobic treatment of the liquid fraction of cattle manure at mesophilic temperature using an upflow anaerobic sludge blanket (UASB)reactor combined with a settler after a pasteurization process at 70 °C for 2 hr. The manure used in this study came from two different farms, with 40 and 200 cows, respectively.The manure from the smaller farm was pretreated in the laboratory by filtration through a 1-mm mesh, and the manure from the other farm was pretreated on the farm by filtration through a separator screw press (0.5-mm mesh). The pasteurization process removed the pathogenic microorganisms lacking pores, such as Enterococcus,Yersinia, Pseudomonas, and coliforms, but bacterial spores are only reduced by this treatment, not removed. The combination of a UASB reactor and a settler proved to be effective for the treatment of cattle manure. In spite of the variation in the organic loading rate and total solids in the influent during the experiment, the chemical oxygen demand (COD) of the effluent from the settler remained relatively constant, obtaining reductions in the COD of 85%.
URI: http://hdl.handle.net/10651/29088
ISSN: 1096-2247
Sponsored: Spanish Ministry of Science and Technology, contract no. REN2002–01969 TECNO.
Project id.: EN2002–01969 TECNO
Appears in Collections:Artículos
Ingeniería Química y Tecnología del Medio Ambiente

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