Mesophilic anaerobic digestion of broadleaf cattail suspensions using the fermented residues of yeast production as inoculum
2023
Myroslav Malovanyy | Ivan Tymchuk | Volodymyr Zhuk | Viktoria Kochubei | Iurii Balandiukh | Ruslan Grechanik | Maria Kopiy
Mesophilic anaerobic digestion of broadleaf cattail suspensions using the inoculum sampled from yeast residues digester was studied experimentally. Two-parameter lab-scale experiment was realized using the suspensions with total solids (TS) content 5 wt% and 10 wt% and with inoculum TS based fractions 0.05 and 0.2. Maximum specific biogas yield was obtained for suspension with TS 10 wt% and inoculum fraction 0.2. Biogas output intensified with increasing both TS content and inoculum mass fraction, and the effect of inoculum was stronger. Thermo-gravimetric analysis showed the increasing of the content of thermally unstable components in digestate with an increase of inoculum content.
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