title: Life cycle assessment of swine and dairy manure: pyrolysis and combustion processes.
abstract: The valorization of three different manure samples via pyrolysis and combustion processes was evaluated. Dairy manure (sample Pre) was biologically pretreated by anaerobic digestion (sample Dig R) whereas swine manure (sample SW) was pretreated by a biodrying process. Thermal behavior of manure samples were studied by means of thermogravimetric analysis coupled with mass spectrometry (TGA-MS). These processes could be divided into four general stages: dehydration, devolatilization, char transformation (oxidation for combustion) and inorganic matter decomposition. The main differences observed among the samples were attributed to their different composition and pretreatment. The economic feasibility, energetic and environmental impacts of pyrolysis and combustion technologies for dairy samples were carried out by means of life cycle assessment (LCA) methodology. Four different scenarios were analyzed. The economic feasibility of the pyrolysis process was demonstrated, being sample Dig R the best environmental option. However, the combustion of sample Pre was the best energetic option.
authors.affiliation: Department of Chemical Engineering, University of Castilla-La Mancha, Ciudad Real, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Fernandez-Lopez
authors.affiliation: Department of Chemical Engineering, University of Castilla-La Mancha, Ciudad Real, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Puig-Gamero
authors.affiliation: CNRS, IRCELYON, Institut de recherches sur la catalyse et l'environnement de Lyon, France.
authors.forename: D
authors.initials: D
authors.lastname: Lopez-Gonzalez
authors.affiliation: Centre National en Électrochimie et en Technologies Environnementales, Québec, Canada.
authors.forename: Antonio
authors.initials: A
authors.lastname: Avalos-Ramirez
authors.affiliation: Department of Chemical Engineering, University of Castilla-La Mancha, Ciudad Real, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Valverde
authors.affiliation: Department of Chemical Engineering, University of Castilla-La Mancha, Ciudad Real, Spain. Electronic address: marialuz.sanchez@uclm.es.
authors.forename: L
authors.initials: L
authors.lastname: Sanchez-Silva
mesh_terms: D000383:Agriculture / Q000191:economics; D000818:Animals; D056804:Biofuels; D018533:Biomass; D002245:Carbon Dioxide / Q000032:analysis; D003612:Dairying; D004777:Environment; D017752:Greenhouse Effect; D006859:Hydrogen / Q000032:analysis; D008372:Manure / Q000032:analysis; D013058:Mass Spectrometry / Q000379:methods; D008697:Methane / Q000032:analysis; D013552:Swine; D013818:Thermogravimetry / Q000379:methods; D018505:Waste Management / Q000191:economics / Q000379:methods
chemical_list: D056804:Biofuels; D008372:Manure; D002245:Carbon Dioxide; D006859:Hydrogen; D008697:Methane
keywords: Combustion; LCA; Manure; Pyrolysis; TGA–MS