BioChem - DOS

Improving aerobic stability and biogas production of maize silage using silage additives

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

Herrmann, C.; Idler, C.; Heiermann, M.

The effects of air stress during storage, exposure to air at feed-out, and treatment with silage additives to enhance aerobic stability on methane production from maize silage were investigated at laboratory scale. Up to 17% of the methane potential of maize without additive was lost during seven days exposure to air on feed-out. Air stress during storage reduced aerobic stability and further increased methane losses. A chemical additive containing salts of benzoate and propionate, and inoculants containing heterofermentative lactic acid bacteria were effective to increase aerobic stability and resulted in up to 29% higher methane yields after exposure to air. Exclusion of air to the best possible extent and high aerobic stabilities should be primary objectives when ensiling biogas feedstocks.

2015

Elsevier Applied Science

0960-8524

197

pp.393-403

10.1016/j.biortech.2015.08.114

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART73127341

Anaerobic digestion; Methane yield; Ensiling; Aerobic deterioration; Biomass storage