In this thesis, the feasibility of utilizing energy crops (willow and
miscanthus) and agriculture residues (wheat straw and corn stalker)
in an anaerobic digestion process for biogas production was
evaluated. Potential energy crops and agriculture residues were
screened according to their suitability for biogas production.
Moreover, pretreatment of these biomasses by using wet explosion
method was studied and the effect of the wet explosion process was
evaluated based on the increase of (a) sugar release and (b) methane
potential when comparing the pretreated biomass and raw biomass.
Ensiling of perennial crops was tested as a storage method and
pretreatment method for enhancement of the biodegradability of the
crops. The efficiency of the silage process was evaluated based on
(a) the amount of biomass loss during storage and (b) the effect of
the silage on methane potential. Co-digestion of raw and wet
explosion pretreated energy crops and agriculture residues with
swine manure at various volatile solids (VS) ratio between crop and
manure was carried out by batch tests and continuous experiments.
The efficiency of the co-digestion experiment was evaluated based
on (a) the methane potential in term of ml CH4 produced per g of
VS-added and (b) the amount of methane produced per m3 of
- Bio refinery
- Bio systems