Co-ensiling of wheat straw as an alternative pre-treatment to chemical, hydrothermal and mechanical methods for methane production

Mads Ujarak Sieborg, Brian Dahl Jønson, Søren Ugilt Larsen, Ali Heidarzadeh Vazifehkhoran, Jin Mi Triolo*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

48 Downloads (Pure)

Abstract

Wheat straw without pre-treatment is only converted to methane to a low degree during anaerobic digestion for fuel production due to its low hydrolysis. Current pre-treatment technologies are challenged by high expenses to energy or chemical agents. We examined the low-tech co-ensiling pre-treatment as an alternative pre-treatment of wheat straw, and compared the results with hydrothermal, chemical and mechanical pre-treatment methods. The effects of co-ensiling duration and the mixing ratio between straw and sugar beet root on the methane yields, surface morphology and chemical composition were examined. It was found that co-ensiling could improve production of methane by 34.7%, while a combined hydrothermal and chemical pre-treatment could increase the production of methane by 25.4%. The study demonstrated that the effect of co-ensiling could overlap with hydrothermal and chemical pre-treatment by having similar effects to increase lignocellulosic hydrolysis and improve methane production.
Original languageEnglish
Article number4047
JournalEnergies
Volume13
Issue number16
Number of pages19
ISSN1996-1073
DOIs
Publication statusPublished - 5. Aug 2020

Keywords

  • Anaerobic digestion
  • Biofuels
  • Biogas
  • Lignocellulose
  • Silage
  • Sustainability

Fingerprint Dive into the research topics of 'Co-ensiling of wheat straw as an alternative pre-treatment to chemical, hydrothermal and mechanical methods for methane production'. Together they form a unique fingerprint.

Cite this