Modeling methane potential yield and chemical composition of bedded pack barn cattle manure: Influence of cattle, season, growth stage, its retention time and particle distribution

The livestock manure is being recycled using various technologies such as composting, bio-gasification, and solid fuel. The various characteristics of the feedstock are very important to develop biomass recycling technology. However, the information is not enough about livestock manure in South Korea. This study was conducted to investigate the chemical characteristics of bedded pack barn cattle manure according to various conditions. The moisture and total solids contents were shown as 71.8 and 28.5% in the bedded pack barn cattle manure (CM), respectively. As the retention time of beef (BCM) and dairy cattle manure (DCM) in the bedded pack barn increases, the volatile solids content got close to 84.2 ± 2.5% on a dry basis. ( P