Co-composting of poultry manure with other agricultural wastes : process performance and compost horticultural use
Rizzo, Pedro Federico (Ministerio de Agroindustria. Instituto De Investigación Microbiología y Zoología Agrícola (Buenos Aires))
Della Torre, Virginia (Ministerio de Agroindustria. Instituto De Investigación Microbiología y Zoología Agrícola (Buenos Aires))
Ivan Riera, Nicolás (Ministerio de Agroindustria. Instituto De Investigación Microbiología y Zoología Agrícola (Buenos Aires))
Crespo, Diana Cristina (Ministerio de Agroindustria. Instituto De Investigación Microbiología y Zoología Agrícola (Buenos Aires))
Barrena Gómez, Raquel (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Sanchez, Antoni (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)

Data:	2013
Resum:	The aim of this work was to evaluate the composting process of poultry manure mixed with other complementary organic wastes. Two mixtures (treatment 1 and 2) were prepared with corn bare cobs, sawdust, shavings and manure. Temperature, pH, electrical conductivity, organic matter loss, total organic carbon, solved organic carbon, N loss, ammonium and nitrate concentration, laccase activity and respiration indices were analyzed. These variables showed similar tendencies during the composting process in both treatments. A peak of biological activity, organic matter mineralization and salt release was observed after 6 days of the process. Treatment 2 showed a higher concentration of solved organic carbon and higher organic matter loss than in the mixture with less manure (treatment 1). Laccase activity increased when solved organic carbon decreased. Compost from treatment 1 showed lower phytotoxic effects than that from treatment 2, probably because of a low salt content. In conclusion, it was observed that 60 % content of poultry manure in the mixture does not affect the composting process. However, the final product is not as good for agricultural purposes as a mixture with a lower manure content. Finally, it can be stated that the valorization of these wastes in the form of compost adds value to the materials, closing the biogeochemical nutrient cycle.
Ajuts:	Ministerio de Economía y Competitividad CTM2012-33663
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; recerca ; Versió sotmesa a revisió
Matèria:	Poultry manure ; Decomposition ; Composting ; Compost quality
Publicat a:	Journal of material cycles and waste management, Vol. 17, issue 1 (Jan. 2015) p. 42-50, ISSN 1438-4957

DOI: 10.1007/s10163-013-0221-y

Preprint 30 p, 437.3 KB

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