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Comparison of Operating Methods in Cartridge Anaerobic Digestion of Corn Stover

Authors
  • Yang, Liangcheng1
  • Moran, Trevar1
  • Han, Alicia1
  • 1 Illinois State University,
Type
Published Article
Journal
Bioenergy Research
Publisher
Springer US
Publication Date
Jan 26, 2021
Pages
1–7
Identifiers
DOI: 10.1007/s12155-021-10252-w
PMID: 33520080
PMCID: PMC7834950
Source
PubMed Central
Keywords
License
Unknown

Abstract

Anaerobic digestion of lignocellulosic biomass faces changes such as biomass floating and effluent discharge. To overcome these challenges, a unique removable cartridge anaerobic digester was built and tested using corn stover as the feedstock. Three operating methods differing in the number of cartridges and days of rotation were tested. The first method used three cartridges, with each cartridge being rotated every 7 days. The second and third methods employed four cartridges, with cartridges being rotated every 7 and 9–10 days, respectively. The retention time for methods 1, 2, and 3 was 21, 28, and 38 days, respectively. After observation spanning 1 year, it was found that the cartridge digester was capable of generating a stable amount of biogas for energy without biomass floating or effluent discharging issues. The average daily methane yield from each method was 7.57, 7.11, and 6.82 L/day/kg-VS, and the cumulative methane yield was 158.95, 199.04, and 259.00 L/kg-VS, respectively. Ammonium nitrogen and pH values were in normal ranges throughout the experiment. This study provided new knowledge in operating and optimizing this cartridge digester, which may be broadly used for the anaerobic digestion of lignocellulosic biomass in the near future. Supplementary Information The online version contains supplementary material available at 10.1007/s12155-021-10252-w.

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