Steam Explosion Conditions Highly Influence the Biogas Yield of Rice Straw.

Autor: Steinbach D; Institute of Agricultural Engineering, University of Hohenheim, Garbenstrasse 9, 70599 Stuttgart, Germany. David.Steinbach@kit.edu.; Karlsruhe Institute of Technology (KIT), Institute for Catalysis Research and Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany. David.Steinbach@kit.edu., Wüst D; Institute of Agricultural Engineering, University of Hohenheim, Garbenstrasse 9, 70599 Stuttgart, Germany. wuest.dominik@uni-hohenheim.de., Zielonka S; State Institute of Agricultural Engineering and Bioenergy, University of Hohenheim, Garbenstrasse 9, 70599 Stuttgart, Germany. simon.zielonka@uni-hohenheim.de., Krümpel J; State Institute of Agricultural Engineering and Bioenergy, University of Hohenheim, Garbenstrasse 9, 70599 Stuttgart, Germany. j.kruempel@uni-hohenheim.de., Munder S; Institute of Agricultural Engineering, University of Hohenheim, Garbenstrasse 9, 70599 Stuttgart, Germany. S_Munder@uni-hohenheim.de., Pagel M; Karlsruhe Institute of Technology (KIT), Institute for Catalysis Research and Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany. matthias.pagel@kit.edu., Kruse A; Institute of Agricultural Engineering, University of Hohenheim, Garbenstrasse 9, 70599 Stuttgart, Germany. Andrea_Kruse@uni-hohenheim.de.
Jazyk: angličtina
Zdroj: Molecules (Basel, Switzerland) [Molecules] 2019 Sep 26; Vol. 24 (19). Date of Electronic Publication: 2019 Sep 26.
DOI: 10.3390/molecules24193492
Abstrakt: Straws are agricultural residues that can be used to produce biomethane by anaerobic digestion. The methane yield of rice straw is lower than other straws. Steam explosion was investigated as a pretreatment to increase methane production. Pretreatment conditions with varying reaction times (12-30 min) and maximum temperatures (162-240 °C) were applied. The pretreated material was characterized for its composition and thermal and morphological properties. When the steam explosion was performed with a moderate severity parameter of S 0 = 4.1 min, the methane yield was increased by 32% compared to untreated rice straw. This study shows that a harsher pretreatment at S 0 > 4.3 min causes a drastic reduction of methane yield because inert condensation products are formed from hemicelluloses.
Databáze: MEDLINE
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