Methane production from solid-state anaerobic digestion of lignocellulosic biomass

Lo Niee Liew, Jian Shi, Yebo Li

Research output: Contribution to journalArticlepeer-review

227 Scopus citations

Abstract

Four lignocellulosic biomass feedstocks including corn stover, wheat straw, yard waste and leaves were evaluated for methane production via solid-state anaerobic digestion (SS-AD). Results showed that the highest methane yield was attained for corn stover (81.2 L kg -1 volatile solids (VS)), followed by wheat straw (66.9 L kg -1 VS), leaves (55.4 L kg -1 VS) and yard waste (40.8 L kg -1 VS) at a substrate to inoculum (S/I) ratio of 2. The methane production during SS-AD of tested lignocellulosic biomass followed the first-order kinetics model with correlation coefficients (r 2) of 0.91-0.98. The main contributor to methane production during SS-AD of corn stover and wheat straw was the degradation of cellulose and hemicellulose while the degradation of extractives was more predominant in yard waste and leaves. An inverse linear relationship was obtained between the methane yield and the lignin content and a positive linear relationship was found between the methane yield and the enzymatic digestibility of the lignocellulosic biomass.

Original languageEnglish
Pages (from-to)125-132
Number of pages8
JournalBiomass and Bioenergy
Volume46
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
  • Municipal solid waste
  • Solid-state anaerobic digestion
  • Wheat straw

ASJC Scopus subject areas

  • Forestry
  • Renewable Energy, Sustainability and the Environment
  • Agronomy and Crop Science
  • Waste Management and Disposal

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