title: Anaerobic co-digestion plants for the revaluation of agricultural waste: Sustainable location sites from a GIS analysis.
abstract: The aim of this study was to establish sustainably feasible areas for the implementation of anaerobic co-digestion plants for agricultural wastes (cattle/swine slurries and cereal crop wastes). The methodology was based on the use of geographic information systems (GIS), the analytic hierarchy process (AHP) and map algebra generated from hedges related to environmental, social and economic constraints. The GIS model obtained was applied to a region of Chile (Bío Bío Region) as a case study showing the energy potential (205 MW-h) of agricultural wastes (swine/cattle manures and cereal crop wastes) and thereby assessing its energy contribution (3.5%) at country level (Chile). From this model, it was possible to spatially identify the influence of each factor (environmental, economic and social) when defining suitable areas for the siting of anaerobic co-digestion plants. In conclusion, GIS-based models establish appropriate areas for the location of anaerobic co-digestion plants in the revaluation of agricultural waste from the production of energy through biogas production.
authors: Center for Water Resources in Agriculture and Mining CRHIAM, University of Concepción, Chile cvillamar@udec.cl.
authors: Cristina Alejandra
authors: CA
authors: Villamar
authors: Center for Water Resources in Agriculture and Mining CRHIAM, University of Concepción, Chile.
authors: Diego
authors: D
authors: Rivera
authors: Environmental Science Faculty and EULA-Chile Center, University of Concepción, Chile.
authors: Mauricio
authors: M
authors: Aguayo
mesh_terms: D000383:Agriculture; D000818:Animals; D056804:Biofuels; D019149:Bioreactors; D002417:Cattle; D002677:Chile; D003247:Conservation of Natural Resources / Q000379:methods*; D040362:Geographic Information Systems; D007220:Industrial Waste; D008372:Manure; D008697:Methane / Q000096:biosynthesis; D008962:Models, Theoretical; D012037:Refuse Disposal / Q000295:instrumentation / Q000379:methods; D059205:Renewable Energy; D013552:Swine
chemical_list: D056804:Biofuels; D007220:Industrial Waste; D008372:Manure; D008697:Methane
keywords: Anaerobic co-digestion; GIS model; biogas; cereal crop wastes; energy; manure