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Journal of Food Science and Nutrition | Volume 2
December 09-10, 2019 | Dubai, UAE
Nutrition, Food Science and Technology
8
th
International Conference on
J Food Sci Nutr, Volume:2
Biological pretreatment of lignocellulosic material for increased biogas production
by Anaerobic digestion
Jaron C Hansen
Brigham Young University, USA
W
ithout pretreatment, anaerobic digestion of
lignocellulosic material typically converts only
one-third of the carbon into biogas which is typically only
60% methane. Physical and chemical pretreatments to
increase biogas production from biomass have proven
to be uneconomical. The anaerobic thermophile,
Caldicellulosiruptor bescii
, has been shown to be capable
of solubilizing up to 90% of lignocellulose, thus making
the carbon accessible for anaerobic digestion. Preliminary
experiments show C. bescii is capable of solubilizing a wide
range of lignocellulosic materials. Anaerobic digestion
readily and rapidly converts the soluble products into biogas
with 70-80% methane. Isothermal microbiocalorimetry
measurements have provided a thermodynamic
understanding of the process. We have applied the
pretreatment/anaerobic digestion process to giant king
grass, corn mash, corn stover, waste activated sludge
(WAS), almond shells and algae and found the biogas yield
significantly improved. Results from experiments conducted
using isothermal microbiocalorimetry as well as larger-scale
30L and 60L reactor pretreatment/anaerobic digestion
experiments will be presented.
e
:
jhansen@chem.byu.edu