Biodelignification of agricultural and forest wastes: Effect on anaerobic digestion
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URI: http://hdl.handle.net/10835/14967
ISSN: 0961-9534
DOI: https://doi.org/10.1016/j.biombioe.2013.10.021
ISSN: 0961-9534
DOI: https://doi.org/10.1016/j.biombioe.2013.10.021
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López López, María Josefa; Suárez Estrella, Francisca; Vargas García, María Del Carmen; López González, Juan Antonio; Verstichel, Steven; [et al.]Fecha
2013-10-26Resumen
Four lignocellulosic wastes (wood fiber, grass, corn stover and wheat straw) were treated
with the ligninolytic fungus Phanerochaete flavido-alba to improve their anaerobic digestion.
After 21 days solid substrate culture, lignin content was depleted in all materials by fungus
in a range between 5 and 20%, but cellulose and hemicellulose were also biodegraded.
Anaerobic biodegradability of corn stover, grass and wood fiber increased as a consequence
of fungal treatment. Biogas production was enhanced only in wood fiber. Fungal delignified
wood fiber produced 124 NL biogas kg 1 dry wood fiber with a 64% methane, after 21 days
anaerobic digestion; while non-inoculated controls did not produce any biogas. Predigestion
of agricultural wastes (corn stover, grass and wheat straw) before biodelignification
treatment failed to improve subsequent biogas production.
Palabra/s clave
Biogas
Methane
Biodegradability
Lignocellulose
Ligninolytic
Phanerochaete flavido-alba