Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 379-386 |
| Number of pages | 8 |
| Journal | Bioresource Technology |
| Volume | 124 |
| DOIs | |
| State | Published - Nov 2012 |
Bibliographical note
Funding Information:This project was supported by Ohio Agricultural Research and Development Center (OARDC) SEEDS Program (2008-043) and the Ohio Third Frontier Program (10-059). The authors would like to thank Mrs. Mary Wicks (Department of Food, Agricultural and Biological Engineering, OSU) for reading through the manuscript and providing useful suggestions.
Keywords
- Biogas
- Corn stover
- Lignocellulosic biomass
- Solid-state anaerobic digestion
- Switchgrass
ASJC Scopus subject areas
- Bioengineering
- Environmental Engineering
- Renewable Energy, Sustainability and the Environment
- Waste Management and Disposal
