title: Energy-environmental benefits and economic feasibility of anaerobic codigestion of Iberian pig slaughterhouse and tomato industry wastes in Extremadura (Spain).
abstract: Anaerobic digestion of Iberian pig slaughterhouse and tomato industry wastes, as well as codigestion operations from such residues, are reported to achieve 54-80% reduction in Chemical Oxygen Demand and 6-19 N m(3)/m(3) substrate methane production. Furthermore, 0.79-0.88 m(3)water/m(3) substrate is seen to be recovered after the above mentioned operations, which might be used as irrigation water, and 0.12-0.21 m(3)agricultural amendment/m(3) substrate with 91-98% moisture content. The present paper also reports on the economic feasibility of both an anaerobic codigestion plant operating with 60% slaughterhouse wastes/40% tomato industry wastes (optimal ratio obtained in previous laboratory-scaled experiments), and an anaerobic digestion plant for Iberian pig slaughterhouse waste. Payback times are reported as 14.86 and 3.73 years, respectively.
authors.affiliation: Department of Applied Physics, University of Extremadura, Avenida de Elvas S/N, 06006 Badajoz, Spain. almudenagg@unex.es
authors.forename: A
authors.initials: A
authors.lastname: González-González
authors.forename: F
authors.initials: F
authors.lastname: Cuadros
authors.forename: A
authors.initials: A
authors.lastname: Ruiz-Celma
authors.forename: F
authors.initials: F
authors.lastname: López-Rodríguez
mesh_terms: D000003:Abattoirs; D000468:Alkalies / Q000032:analysis; D000693:Anaerobiosis; D000818:Animals; D001673:Biodegradation, Environmental; D019149:Bioreactors; D003246:Conservation of Energy Resources / Q000191:economics*; D003365:Costs and Cost Analysis; D004560:Electricity; D005232:Fatty Acids, Volatile / Q000032:analysis; D005240:Feasibility Studies; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste / Q000032:analysis* / Q000191:economics*; D018551:Solanum lycopersicum / Q000737:chemistry*; D012037:Refuse Disposal / Q000191:economics* / Q000379:methods*; D034421:Sus scrofa
chemical_list: D000468:Alkalies; D005232:Fatty Acids, Volatile; D007220:Industrial Waste