Dr. Ingeniería Ambiental

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Journal of Environmental Science and Health, Part A: Toxic/Hazardous Substances and Environmental Engineering
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Effect of low temperature thermal pre-treatment on the solubilization of organic matter, pathogen inactivation and mesophilic anaerobic digestion of poultry sludge
Juan E. Ruiz-Espinoza , Juan M. Méndez-Contreras , Alejandro Alvarado-Lassman & Sergio A. Martínez-Delgadillo
a a a b bDepartamento de Ciencias Básicas, Universidad Autónoma Metropolitana - Azcapotzalco, Distrito Federal, México
b

Division de Estudios de Posgrado e Investigación, Instituto Tecnológico de Orizaba, Orizaba, México Version of record first published: 04 Jul 2012

To cite this article: Juan E. Ruiz-Espinoza, Juan M. Méndez-Contreras, Alejandro Alvarado-Lassman & Sergio A. MartínezDelgadillo (2012):Effect of low temperature thermal pre-treatment on the solubilization of organic matter, pathogen inactivation and mesophilic anaerobic digestion of poultry sludge, Journal of Environmental Science and Health, Part A: Toxic/Hazardous Substances and Environmental Engineering, 47:12, 1795-1802 To link to this article: http://dx.doi.org/10.1080/10934529.2012.689237

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Journal of Environmental Science and Health, Part A (2012) 47, 1795–1802 Copyright C Taylor & Francis Group, LLC ISSN: 1093-4529 (Print); 1532-4117 (Online) DOI: 10.1080/10934529.2012.689237

Effect of low temperature thermal pre-treatment on the solubilization of organic matter, pathogen inactivation and mesophilic anaerobic digestion of poultry sludge
´ JUANE. RUIZ-ESPINOZA1, JUAN M. MENDEZ-CONTRERAS2, ALEJANDRO ALVARADO-LASSMAN2 ´NEZ-DELGADILLO1 and SERGIO A. MARTI
1 2

Departamento de Ciencias B´ sicas, Universidad Aut´ noma Metropolitana - Azcapotzalco, Distrito Federal, M´ xico a o e Division de Estudios de Posgrado e Investigaci´ n, Instituto Tecnol´ gico de Orizaba, Orizaba, M´ xico o o e

Downloaded by [Juan Enrique Ruiz Espinoza] at 10:4404 July 2012

Treatment of poultry industry effluents produces wastewater sludge with high levels of organic compounds and pathogenic microorganisms. In this research, the thermal pre-treatment of poultry slaughterhouse sludge (PSS) was evaluated for low temperatures in combination with different exposure times as a pre-hydrolysis strategy to improve the anaerobic digestion process. Organiccompounds solubilization and inactivation of pathogenic microorganisms were evaluated after treatment at 70, 80 or 90◦ C for 30, 60 or 90 min. The results showed that 90◦ C and 90 min were the most efficient conditions for solubilization of the organic compounds (10%). In addition, the bacteria populations and the more resistant structures, such as helminth eggs (HE), were completely inactivated....