title: Optimisation of a microwave pretreatment of wheat straw for methane production.
abstract: This study aims at the optimisation of a microwave pretreatment for wheat straw solubilisation and anaerobic biodegradability. The maximum yield of methane production was obtained at 150°C with an improvement of 28% compared to an untreated sample. In addition, at this temperature, the time to reach 80% of the methane volume obtained from untreated straw was about 35%. The study of ramp time and holding time at targeted temperature showed that they had no improvement effect. Thus, the best conditions are the highest heating rate for a final temperature 150°C without any holding time. The reading of energy consumed by pretreatment and energy overproduced by pretreated samples showed that increasing tVS amount and heating rate led to a saving of energy consumption. Nevertheless, to obtain a positive energy balance, a microwave device should consume less than 2.65 kJ/g(tVS).
authors.affiliation: Institut Polytechnique LaSalle Beauvais, 19 rue Pierre Waguet, 60026 Beauvais, France.
authors.forename: D
authors.initials: D
authors.lastname: Jackowiak
authors.forename: D
authors.initials: D
authors.lastname: Bassard
authors.forename: A
authors.initials: A
authors.lastname: Pauss
authors.forename: T
authors.initials: T
authors.lastname: Ribeiro
mesh_terms: D001421:Bacteria, Anaerobic / Q000378:metabolism*; D056804:Biofuels; D057919:Biological Oxygen Demand Analysis; D002849:Chromatography, Gas; D008031:Lignin / Q000378:metabolism*; D008697:Methane / Q000096:biosynthesis*; D008872:Microwaves; D012037:Refuse Disposal / Q000379:methods*; D013997:Time Factors; D014908:Triticum / Q000378:metabolism*
chemical_list: D056804:Biofuels; C036909:lignocellulose; D008031:Lignin; D008697:Methane