title: Effects of high-temperature isochoric pre-treatment on the methane yields of cattle, pig and chicken manure.
abstract: Cattle manure, dewatered pig manure and chicken manure were pre-treated in a high-temperature reactor under isochoric conditions for 15 min at temperatures between 100 and 225 degrees C with 25 degrees C intervals to study the effect on their methane yield. After 27 days of batch incubation, cattle manure showed a significant improvement in its biochemical methane potential (BMP) of 13% at 175 degrees C and 21% at 200 degrees C. Pig manure showed improvements at temperatures of 125 degrees C and above, with a maximum 29% increase in yield at 200 degrees C. The BMP of chicken manure was reduced by 18% at 225 degrees C, but at lower temperatures there were no significant changes. It was found that this method of pre-treatment could be feasible if sufficient surplus energy was available or if the energy used in the pre-treatment could be recovered.
authors.affiliation: Department of Engineering, Aarhus University, Tjele, Denmark. chitras.raju@agrsci.dk
authors.forename: Chitra Sangaraju
authors.initials: CS
authors.lastname: Raju
authors.forename: Sutaryo
authors.initials: S
authors.lastname: Sutaryo
authors.forename: Alastair James
authors.initials: AJ
authors.lastname: Ward
authors.forename: Henrik Bjarne
authors.initials: HB
authors.lastname: Møller
mesh_terms: D000818:Animals; D056804:Biofuels; D002417:Cattle; D002645:Chickens; D006358:Hot Temperature; D008372:Manure; D008697:Methane / Q000032:analysis*; D013552:Swine
chemical_list: D056804:Biofuels; D008372:Manure; D008697:Methane