Use of biogas biscuit meal EKPO-EB for agricultural biogas plant for substitution of energy crops utilization with organic waste

摘要

A laboratory experiment of two-stage mesophilic, low-dry mass, anaerobic digestion was carried out, focusedon verifying the benefi t of processing the biscuit meal EKPO-EB instead of triticale silage Agostino (GPS) andcorn silage LG3266 in a regular batch for the agricultural biogas station in Pustějov. While anaerobic digestionof ensilages is largely diffi cult due to the content of lignocellulose, biscuit meal provides a high yield of biogasor methane, respectively, thanks to its high content of simple saccharides and lipids. When the original GPS (orthe replacement EKPO-EB, respectively) represented 0.81% of weight of the daily input mixture dose for thefi rst stage, the rise in volumetric methane production was 20% which is signifi cant. The biscuit meal EKPO-EBdecomposes almost completely in the fi rst stage. Later, when the EKPO-EB represented 1.63% of weight of thedaily input mixture dose for the fi rst stage, the rise in volumetric methane production was 54% in the fi rst stageand 16% in the second stage.