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Nusret Imamović, Š. Goletić
0 2016.

MODELLING OF DAILY METHANE YIELD FROM THE LABORATORY SCALE PLUG FLOW ANAEROBIC BIOREACTOR

This paper deals with the assessment of daily methane yield from anaerobic digestion (AD) of slaughterhouse waste using mathematical modelling based on data obtained from 15 days long experimental period. The experiment is carried out using laboratory scale Plug Flow Reactor (PF) operated under different temperature and inclination conditions. The waste mixture was composed of manure from cattle depots and vehicles for cattle transport (labelled as O1) and inedible offal, stomach contents, sludge from washing and cleaning, and the meat leftovers (labelled as O2). The ratio used was O1:O2=80:20. The result of the experiment shows that the higher the bioreactor inclination is, the higher is the methane yield regardless of the temperature. For both experimental levels carried out at lower temperatures, daily methane yield is variable indicting problems with mesophilic bacteria adaptation to lower temperature zones.

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