title: Effects of ultrasonic and thermo-chemical pre-treatments on methane production from fat, oil and grease (FOG) and synthetic kitchen waste (KW) in anaerobic co-digestion.
abstract: The effects of ultrasonic and thermo-chemical pre-treatments on the methane production potential of anaerobic co-digestion with synthetic kitchen waste (KW) or fat, oil and grease (FOG) were investigated. Non-linear regressions were fitted to accurately assess and compare the methane production from co-digestion under the various pre-treatment conditions and to achieve representative simulations and predictions. Ultrasonic pre-treatment was not found to improve methane production effectively from either FOG co-digestion or KW co-digestions. Thermo-chemical pre-treatment could increase methane production yields from both FOG and KW co-digestions. COD solubilization was found to effectively represent the effects of pre-treatment. A comprehensive evaluation indicated that the thermo-chemical pre-treatments of pH=10, 55°C and pH=8, 55°C provided the best conditions to increase methane production from FOG and KW co-digestions, respectively. The most effective enhancement of biogas production (288±0.85mLCH(4)/g TVS) was achieved from thermo-chemically pre-treated FOG co-digestion, which was 9.9±1.5% higher than FOG co-digestion without thermo-chemical pre-treatment.
authors.affiliation: Department of Civil Engineering, Queen's University, Kingston, ON, Canada K7L 3N6.
authors.forename: Chenxi
authors.initials: C
authors.lastname: Li
authors.forename: Pascale
authors.initials: P
authors.lastname: Champagne
authors.forename: Bruce C
authors.initials: BC
authors.lastname: Anderson
mesh_terms: D000693:Anaerobiosis; D056804:Biofuels; D005735:Garbage; D008697:Methane; D012044:Regression Analysis; D012722:Sewage; D013016:Sound
chemical_list: D056804:Biofuels; D012722:Sewage; D008697:Methane