Department of Food, Agricultural, and Biological Engineering, The Ohio State University/Ohio Agricultural Research and Development Center, Wooster, OH 44691-4096, United States.
Bioresour Technol. 2012 Nov;124:379-86. doi: 10.1016/j.biortech.2012.08.051. Epub 2012 Aug 22.
Lignocellulosic biomass feedstocks (switchgrass, corn stover, wheat straw, yard waste, leaves, waste paper, maple, and pine) were evaluated for methane production under liquid anaerobic digestion (L-AD) and solid-state anaerobic digestion (SS-AD). No significant difference in methane yield between L-AD and SS-AD, except for waste paper and pine, were found. However, the volumetric productivity was 2- to 7-fold greater in the SS-AD system compared with the L-AD system, except for paper. Methane yields from corn stover, wheat straw, and switchgrass were 2-5 times higher than those from yard waste, maple, and pine biomass. Waste paper had a methane yield of only 15 L/kg VS caused by souring during SS-AD due to organic overloading. Pine also had very low biogas yield of 17 L/kg VS, indicating the need for pretreatment prior to SS-AD. The findings of this study can guide future studies to improve the efficiency and stability of SS-AD of lignocellulosic biomass.
木质纤维素生物质原料（柳枝稷、玉米秸秆、麦草、庭院废弃物、树叶、废纸、枫木和松木）在液态厌氧消化（L-AD）和固态厌氧消化（SS-AD）下的甲烷生产进行了评估。除废纸和松木外，L-AD 和 SS-AD 之间的甲烷产率没有显著差异。然而，除了纸张，SS-AD 系统的体积生产率比 L-AD 系统高 2-7 倍。玉米秸秆、麦草和柳枝稷的甲烷产率是庭院废弃物、枫木和松木生物质的 2-5 倍。废纸由于 SS-AD 中的有机过负荷导致酸化，其甲烷产率仅为 15 L/kgVS。松木的沼气产率也非常低，为 17 L/kgVS，表明在进行 SS-AD 之前需要进行预处理。本研究的结果可以指导未来的研究，以提高木质纤维素生物质 SS-AD 的效率和稳定性。
