Comparison of solid-state to liquid anaerobic digestion of lignocellulosic feedstocks for biogas production

Dan Brown, Jian Shi, Yebo Li

Research output: Contribution to journalArticlepeer-review

285 Scopus citations

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 languageEnglish
Pages (from-to)379-386
Number of pages8
JournalBioresource Technology
Volume124
DOIs
StatePublished - 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

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