Abstract:Two parallel plug-flow reactors were successfully applied as a hydrolysis stage for the anaerobic pre-digestion of maize silage and recalcitrant bedding straw (30 % and 66 % w/w) under variations of the hydraulic retention time (HRT) and thin-sludge recirculation.
The study proved that the hydrolysis rate profits from shorter HRTs while the hydrolysis yield remained similar and was limited by a low pH-value and reached values of 264 - 310 and 180 - 200 gO2 kgVS-1 for 30 % and 66 % of bedding straw correspondin… Show more
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