Effects of Pretreatment with a Ball Mill on Methane Yield of Horse Manure

Abstract Lignocellulosic biomass is an abundant organic material, which can be utilised in biogas plants for sustainable production of biogas. Since these substrates usually have high lignin contents and consist rather elongated particles, a special pretreatment required economical process-stable utilisation the plant. The mechanical horse manure was carried out with prototype ball mill at different speeds. aim milling to comminute substrate disintegrate lignocellulosic bond. Mechanical resulted significant increase specific methane yield more than 37% anaerobic batch digestion (up 243 L CH4 kg VS ?1 ) manure. kinetics gas formation process analysed by modified Gompertz model fitting showed higher potential maximum daily rate as well lower duration lag phase after 6 rpm. This further confirmed sieve analyses, reduction particle size compared untreated variant. Thus, use increases improves fermentation such Graphical