title: Biochemical methane potential of two-phase olive mill solid waste: influence of thermal pretreatment on the process kinetics.
abstract: The effect of thermal pretreatment on two-phase olive mill solid waste was evaluated by chemical oxygen demand solubilisation and biochemical methane potential (BMP) tests. Temperatures of 100, 120, 160 and 180°C were applied during 60, 120 and 180 min for each temperature studied. The highest chemical oxygen demand solubilisation after pretreatment (42%) was found for 120 and 180°C during 180 min in both cases. These two conditions were selected for the BMP tests. BMP tests showed two different stages: a first exponential stage and a sigmoidal zone after a lag period. No influence of the pretreatment was observed on the kinetic constant of the first-stage. Clear difference was observed in the maximum methane production rate of the second stage, 76.8 mL CH4/(g VS day) was achieved after pretreatment at 180°C (180 min), value 22% and 40% higher than that obtained for the untreated and pretreated OMSW at 120°C, respectively.
authors.affiliation: Instituto de la Grasa (CSIC), Avda. Padre García Tejero, 4.41012 Sevilla, Spain.
authors.forename: B
authors.initials: B
authors.lastname: Rincón
authors.forename: L
authors.initials: L
authors.lastname: Bujalance
authors.forename: F G
authors.initials: FG
authors.lastname: Fermoso
authors.forename: A
authors.initials: A
authors.lastname: Martín
authors.forename: R
authors.initials: R
authors.lastname: Borja
mesh_terms: D000693:Anaerobiosis; D057919:Biological Oxygen Demand Analysis; D019149:Bioreactors / Q000382:microbiology; D001709:Biotechnology / Q000379:methods*; D002482:Cellulose / Q000032:analysis; D007220:Industrial Waste; D007700:Kinetics; D008031:Lignin / Q000032:analysis; D008697:Methane / Q000378:metabolism*; D008956:Models, Chemical; D031658:Olea / Q000737:chemistry*; D011134:Polysaccharides / Q000032:analysis; D062611:Solid Waste; D013696:Temperature; D014835:Volatilization
chemical_list: D007220:Industrial Waste; D011134:Polysaccharides; D062611:Solid Waste; C007916:hemicellulose; D002482:Cellulose; D008031:Lignin; D008697:Methane