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Hidalgo D, Martín-Marroquín JM, Castro J, et al. Influence of cavitation, pelleting, extrusion and torrefaction petreatments on anaerobic biodegradability of barley straw and vine shoots. Chemosphere. 2021;289:133165doi: 10.1016/j.chemosphere.2021.133165.
Hidalgo, D., Martín-Marroquín, J. M., Castro, J., Gómez, M., & Garrote, L. (2022). Influence of cavitation, pelleting, extrusion and torrefaction petreatments on anaerobic biodegradability of barley straw and vine shoots. Chemosphere, 289133165. https://doi.org/10.1016/j.chemosphere.2021.133165
Hidalgo, D, et al. "Influence of cavitation, pelleting, extrusion and torrefaction petreatments on anaerobic biodegradability of barley straw and vine shoots." Chemosphere vol. 289 (2022): 133165. doi: https://doi.org/10.1016/j.chemosphere.2021.133165
Hidalgo D, Martín-Marroquín JM, Castro J, Gómez M, Garrote L. Influence of cavitation, pelleting, extrusion and torrefaction petreatments on anaerobic biodegradability of barley straw and vine shoots. Chemosphere. 2022 Feb;289:133165. doi: 10.1016/j.chemosphere.2021.133165. Epub 2021 Dec 06. PMID: 34883126.
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Chemosphere. 2022 Feb;289:133165. doi: 10.1016/j.chemosphere.2021.133165. Epub 2021 Dec 06.

Influence of cavitation, pelleting, extrusion and torrefaction petreatments on anaerobic biodegradability of barley straw and vine shoots.

Chemosphere

D Hidalgo, J M Martín-Marroquín, J Castro, M Gómez, L Garrote

Affiliations

  1. CARTIF Technology Centre, Boecillo, Valladolid, 47151, Spain. Electronic address: [email protected].
  2. CARTIF Technology Centre, Boecillo, Valladolid, 47151, Spain. Electronic address: [email protected].
  3. CARTIF Technology Centre, Boecillo, Valladolid, 47151, Spain. Electronic address: [email protected].
  4. CARTIF Technology Centre, Boecillo, Valladolid, 47151, Spain. Electronic address: [email protected].
  5. CARTIF Technology Centre, Boecillo, Valladolid, 47151, Spain. Electronic address: [email protected].

PMID: 34883126 DOI: 10.1016/j.chemosphere.2021.133165

Abstract

When dealing with lignocellulosic biomass in anaerobic digestion, a pretreatment stage is always required to open the structure of the material, facilitating its degradation. Numerous methods have been developed to pretreat lignocellulosic biomass. Four of them: cavitation, pelleting, extrusion and torrefaction have been comparatively studied in this paper as ways to improve the production of methane by anaerobic digestion of two different feedstocks: barley straw and vine shoots. Additionally, how the selected pretreatments and the nature of the feedstock influence the formation of individual volatile fatty acids was examined. Cavitation was revealed as the most efficient pretreatment, increasing 240% and 360% the methane production for barley straw and vine shoots, respectively, although in absolute terms, barley straw has higher production rate and yield than vine shoots. Torrefaction carried out at 180 °C increased methane production, 81% for straw and 25% for vine shoots, while the process at higher temperatures (220 °C) negatively affected biogas production from both feedstocks. Finally, volatile fatty acids accumulation seems to neutralize any potential positive effects of densification pretreatments.

Copyright © 2021 Elsevier Ltd. All rights reserved.

Keywords: Anaerobic digestion; Barley straw; Lignocellulosic biomass; Pretreatment; Vine shoot

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