Biogas production from maize hybrids.

Abstract There is an increasing world wide demand for energy crops and animal manures for biogas production. This research project was aimed at optimising anaerobic digestion of maize, using a laboratory digester, and finding out which maturity class of corn and which hybrid of a particular maturity class produces the highest rate of biogas and biomethane. Also the chemical composition of gases was studied. The corn hybrids of FAO 300 – FAO 400, FAO 400 – FAO 500 and FAO 500 – FAO 600 maturity class were tested. Experiments took place in the lab for 35 days within four series of experiments with four repetitions according to the method DIN 38 414. Results show that the highest maturity class of corn (FAO 400, FAO 500) increases the amount of biomethane. The greatest gain of biomethane per hectare according to maturity class is found with hybrids of FAO 400 (7768.4 Nm 3  ha −1 ) and FAO 500 (7050.1 Nm 3  ha −1 ) maturity class. Among the corn hybrids of maturity class FAO 300 – FAO 400, the hybrid PR38F70 gives the greatest production of biomethane per hectare (7646.2 Nm 3  ha −1 ). Among the hybrids of maturity class FAO 400 – FAO 500, the greatest amount of biomethane was achieved by the hybrid PIXXIA (9440.6 Nm 3  ha −1 ). Among the hybrids of maturity class FAO 500 – FAO 600 the hybrid CODISTAR (FAO 500) gives the highest production of biomethane (8562.7 Nm 3  ha −1 ). Production of biomethane varied with corn hybrids from 50 to 60% of produced biogas.

[1]  Peter Weiland,et al.  Production and energetic use of biogas from energy crops and wastes in Germany , 2003, Applied biochemistry and biotechnology.

[2]  Črtomir Rozman,et al.  Biogas production with the use of mini digester , 2008 .

[3]  Enrico Benetto,et al.  Life Cycle Assessment of biogas production by monofermentation of energy crops and injection into the natural gas grid. , 2010 .

[4]  Perry L. McCarty,et al.  Methane fermentation of selected lignocellulosic materials. , 1990 .

[5]  Siegfried Schittenhelm,et al.  Chemical composition and methane yield of maize hybrids with contrasting maturity. , 2008 .

[6]  Saija Rasi,et al.  Trace compounds of biogas from different biogas production plants. , 2007 .

[7]  Barbara Amon,et al.  Methane production through anaerobic digestion of various energy crops grown in sustainable crop rotations. , 2007, Bioresource technology.

[8]  Bogomir Muršec,et al.  Processing of soybean meal into concentrates and testing for Genetically Modified Organism (GMO) , 2007 .

[9]  J. M. Owens,et al.  Biochemical methane potential of biomass and waste feedstocks , 1993 .

[10]  H. Oechsner,et al.  Welchen Energiemais wann ernten für die Biogasgewinnung , 2006 .

[11]  W. Zollitsch,et al.  Biogas production from maize and dairy cattle manure - influence of biomass composition on the methane yield. , 2007 .

[12]  M. Lebuhn,et al.  Biogas production from mono-digestion of maize silage-long-term process stability and requirements. , 2008, Water science and technology : a journal of the International Association on Water Pollution Research.

[13]  Hans Oechsner,et al.  Which energy maize varieties when to harvest for biogas production. , 2006 .

[14]  V. Gunaseelan.  Anaerobic digestion of biomass for methane production: A review , 1997 .