Comparative Study of Steam- and Nitrogen Explosion Pretreatment Methods

Merlin Raud, Klaus Krennhuber, Alexander Jäger, Timo Kikas

Research output: Chapter in Book/Report/Conference proceedingsConference contributionpeer-review

Abstract

The aim of this paper was to investigate chemical and physical changes in biomass during N2 explosive decompression pretreatment and compare it with steam explosion pretreatment. The methods are economically and environmentally attractive since only pressure and water/steam are used to break down the biomass structure. Two pretreatment methods were used at different temperatures and samples from all process steps were analysed. The results were used to assess the pretreatment effect and the chemical changes in biomass and, finally, the mass balances of the bioethanol process at different process steps. Results show that the highest glucose and ethanol yields were obtained with the steam explosion pretreatment method at 200 °C (24.29 g and 12.72 g per 100 g biomass, respectively). At lower temperatures, the nitrogen explosion treatment produced better yields.
Original languageEnglish
Title of host publicationConference Prodeedings 10tH International Conference on Sustainable Energy and Environmental Protection
PublisherUniversity of Maribor Press
Pages333-342
ISBN (Print)ISBN 978-961-286-048-6
Publication statusPublished - 2017
Event10tH International Conference on Sustainable Energy and Environmental Protection - Bled, Slovenia
Duration: 27 Jun 201730 Jun 2017

Conference

Conference10tH International Conference on Sustainable Energy and Environmental Protection
CountrySlovenia
CityBled
Period27.06.201730.06.2017

Keywords

  • Biomass
  • Lignocellulose
  • Bioethanol
  • Steam explosion pretreatment
  • Nitrogen explosive decompression pretreatment

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