title: Economic analyses of pig manure treatment options in Ireland.
abstract: An economic analysis was performed on treatment options for pig manure in Ireland. Costs were based on a 500 sow integrated pig farm producing 10,500 m(3) of manure per year at 4.8% dry matter. The anaerobic digestion of pig manure and grass silage (1:1; volatile solids basis) was unviable under the proposed tariffs, with costs at € 5.2 m(-3) manure. Subsequent solid-liquid separation of the digestate would cost an additional € 12.8 m(-3) manure. The treatment of the separated solid fraction by composting and of the liquid fraction by integrated constructed wetlands, would add € 2.8 and € 4.6 m(-3) manure, respectively to the treatment costs. The cost analysis presented showed that the technologies investigated are currently not cost effective in Ireland. Transport and spreading of raw manure, at € 4.9 m(-3) manure (15 km maximum distance from farm) is the most cost effective option.
authors.affiliation: Teagasc, Pig Development Department, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, Ireland. terezacota@gmail.com
authors.forename: Tereza
authors.initials: T
authors.lastname: Nolan
authors.forename: Shane M
authors.initials: SM
authors.lastname: Troy
authors.forename: Stephen
authors.initials: S
authors.lastname: Gilkinson
authors.forename: Peter
authors.initials: P
authors.lastname: Frost
authors.forename: Sihuang
authors.initials: S
authors.lastname: Xie
authors.forename: Xinmin
authors.initials: X
authors.lastname: Zhan
authors.forename: Caolan
authors.initials: C
authors.lastname: Harrington
authors.forename: Mark G
authors.initials: MG
authors.lastname: Healy
authors.forename: Peadar G
authors.initials: PG
authors.lastname: Lawlor
mesh_terms: D000693:Anaerobiosis; D000818:Animals; D003365:Costs and Cost Analysis; D004867:Equipment Design; D006358:Hot Temperature; D007494:Ireland; D008372:Manure / Q000032:analysis*; D008697:Methane / Q000032:analysis; D018803:Models, Economic; D009584:Nitrogen / Q000032:analysis; D006109:Poaceae; D012037:Refuse Disposal / Q000379:methods*; D059205:Renewable Energy; D013552:Swine
chemical_list: D008372:Manure; D009584:Nitrogen; D008697:Methane