Acta Univ. Agric. Silvic. Mendelianae Brun. 2012, 60(3), 19-24 | DOI: 10.11118/actaun201260030019

Analysis of production tests in processing the mixture of solid and liquid biologically degradable wastes by anaerobic fermentation

Jiří Fryč1, Josef Los1, Tomáš Lošák2
1 Ústav zemědělské, potravinářské a environmentální techniky, Mendelova univerzita v Brně, Zemědělská 1, 613 00 Brno, Česká republika
2 Ústav agrochemie, půdoznalství, mikrobiologie a výživy rostlin, Mendelova univerzita v Brně, Zemědělská 1, 613 00 Brno, Česká republika

This study concerns the analysis of operating anaerobic fermentation systems of agricultural biogas station and implementing a suitable system enabling the use of a mixture of solid and liquid biowaste. The tests made use of liquid substrates commercially offered to biogas station operators. The study evaluates practical measurements at an agricultural biogas station in order to evaluate the biogas production from these substrates and the efficiency of transforming input material to usable energy. The use of such treated substrates for the anaerobic fermentation technology may have a substantial influence on the volume of dosed energy crops. The mixture of input substrates consisting of liquid cattle excrements, silage corn, solid and liquid waste from food processing, animal waste and glycerine water was experimentally validated. This mixture was compared with the operation using liquid cattle excrements and silage corn. It was concluded that the proposed composition of input raw materials makes it possible to increase the production of biogas and el. power. On the other hand, it was identified that the energy content of the input raw materials is not optimally transformed into usable energy. This is why the proposed mixture of input materials with biowaste is not recommended for use at the used proportion.

Keywords: biogas, anaerobic fermentation, biologically degradable waste, biogas station
Grants and funding:

This study was financed by the Internal Grant Agency of the Faculty of Agronomy MENDELU in Brno No. TP 9/2011 and by the Research plan No. MSM6215648905 'Biological and technological aspects of sustainability of controlled ecosystems and their adaptability to climate change', which is financed by the Ministry of Education, Youth and Sports of the Czech Republic.

Received: March 5, 2012; Published: August 28, 2013  Show citation

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Fryč, J., Los, J., & Lošák, T. (2012). Analysis of production tests in processing the mixture of solid and liquid biologically degradable wastes by anaerobic fermentation. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 60(3), 19-24. doi: 10.11118/actaun201260030019
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