The impact of mesophilic and thermophilic anaerobic digestion on biogas production

• Autorzy: Vindis P. , Mursec B. , Janzekovic M. , Cus F.
• Języki publikacji: EN

Abstrakty

EN

Purpose: of this paper is to compare mesophilic and thermophilic anaerobic digestion of three maize varieties. Parameters such as biogas production and biogas composition from maize silage were measured and calculated. The amount of biogas production (methane) was observed by the mini digester. Design/methodology/approach: Biogas production and composition in mesophilic (35 degrees C) and thermophilic (55 degrees C) conditions were measured and compared. The measurements were performed with mini digester according to DIN 38414 part 8. We used three different maize varieties (NK PAKO, PR34N43 and RAXXIA). Findings: Biogas yields ranged between 315 - 409 Nl kg VS-1 in mesophilic conditions and 494 – 611 Nl kg VS-1 in thermophilic conditions. The highest biogas yield was in case of NK PAKO (611 NI kg VS-1) in thermophilic conditions. The lowest biogas yield was in case of PR34N43 (315 NI kg VS-1) in mesophilic conditions. Biogas quality produced in thermophilic temperature range is better than biogas quality produced in mesophilic temperature range. Thermophilic digestion is 4 times more intense, has higher VSS removal efficiency and yields more biogas. Research limitations/implications: Thermophilic stabilization of energy plants at 55°C is truly economical, more biogas is produced. The only disadvantage of thermophilic stabilization is that more energy is used for heating fermenters. Therefore, further researches are necessary. Practical implications: For biogas plants with mesophilic digesters we suggest an upgrade of existing mesophilic digesters (35°C) to thermophilic digesters (55°C), which is an economically beneficial solution compared to construction of additional mesophilic digesters. Originality/value: The mini digester for biogas production was built as special equipment. It can be used in mesophilic and thermophilic conditions. The quality of the produced biogas is determined with a gas analyser GA 45.

Słowa kluczowe

EN

mini digester; biogas

PL

mini warnik; biogaz

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2009
• Tom: Vol. 36, nr 2
• Strony: 192--198
• Opis fizyczny: Bibliogr. 15 poz., rys., tabl.

Twórcy

autor

Vindis P.

autor

Mursec B.

autor

Janzekovic M.

autor

Cus F.

• Faculty of Agriculture and Life Sciences, University of Maribor, Pivola 10, 2311 Hoce, Slovenia,

Bibliografia

• [1] A. Tiehm, K. Nickel, M. Zellhorn, U. Neis, Ultrasonic waste activated sludge disintegration for improving anaerobic stabilization, Water Research 35 (2001) 2003.2009.
• [2] J. P. Delgenes, V. Penaud, R. Moletta, Pretreatments for enhancement of anaerobic digestion of solid waste, J. Mata-Alvarez Ed., Biomethanization of the Organic Fraction of Municipal Solid Wastes, Chapter 8. London: IWA Publishing, 2003, 201.
• [3] P. Vindis, B. Mursec, M. Janzekovic, F. Cus, Processing of soybean meal into concentrates and testing for Genetically Modified Organism (GMO), Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 507-510.
• [4] C. Bougrier, H. Carrere, J. P. Delgenes, Solubilisation of waste-activated sludge by ultrasonic treatment, Chemical Engineering 106 (2005) 163.
• [5] J. Winter, U. Temper, Microbiology of the anaerobic wastewater treatment, Sewage Waste Recycle 38 (1987) 14-21.
• [6] AG. Hashimoto, VH. Varel, YR. Chen, Ultimate methane yield from beef cattle manure: effect of temperature, constitute, antibiotics and manure age, Agriculture Waste 3 (1981) 241-256.
• [7] B. Mursec, M. Janzekovic, F. Cus, U. Zuperl, Comparison of rollers after sowing of buckwheat, Journal of Achievements in Materials and Manufacturing Engineering 17 (2006) 269-272.
• [8] T. Amon, B. Amon, V. Kryvoruchko, W. Zollitsch, K. Mayer, L. Gruber, Biogas production from maize and dairy cattle manure—Influence of biomass composition on the methane yield, Agriculture, Ecosystems and Environment 118 (2007) 173-182.
• [9] F. P. Gene, Fundamentals of anaerobic, Environmental Engineering 112 (1986) 867-920.
• [10] E. J. Cook, Anaerobic sludge digestion: Manual of practice Alexandria VA: Water pollution control federation: Task force on Sludge stabilization, No. 16, 1986,
• [11] DIN 38 414, 1985. Determination of digestion behavior ‘‘sludge and sediments’’. Beuth Verlag, Berlin (in German).
• [12] B. Mursec, F. Cus, Integral model of selection of optimal cutting conditions from different databases of tool makers, Journal of Materials Processing Technology 133 (2003) 158-165.
• [13] B. Mursec, F. Cus, J. Balic, Organization of tool supply and determination of cutting conditions, Journal of Materials Processing Technology 100 (2000) 241-249.
• [14] P. Weiland, Production and energetic use of biogas from energy crops and wastes in Germany, Applied Biochemistry and Biotechnology 109 (2003) 263-274.
• [15] K. Navickas, Biogas for farming, energy conversion and environment protection, International symposium, Biogas, technology and environment, University of Maribor, Faculty of Agriculture, 2007, 25-29.