Biocrude production via supercritical hydrothermal co-liquefaction of spent mushroom compost and aspen wood sawdust

Research output: Contribution to journalJournal articleResearchpeer-review

11 Citations (Scopus)

Abstract

The work investigates a new potential feedstock source for hydrothermal liquefaction (HTL) driven biocrude production. Specifically, the focus is set on utilizing spent mushroom compost (SMC), the primary waste by-product from mushroom farming. It is considered as a feedstock for HTL conversion due to its organic nature (e.g. straw, horse manure and sphagnum) and ample availability with an annual production of over 3.4 million metric tonnes, globally. Locally acquired samples were analyzed and converted hydrothermally. A biocrude yield of 48% on dry ash-free (DAF) basis was obtained but it was accompanied by a solid fraction (organics and inorganics) of 50% on dry basis, considered to be critically high in a continuous HTL context. Acid leaching (citric acid) of the SMC and co-liquefaction (with aspen wood (AW)) was investigated as means to decrease the solid fraction. Whereas the SMC leaching showed to be ineffective, co-liquefaction showed potential. The solid fraction could be reduced to half (24.5%) by mixing SMC:AW in a 1:3 mass ratio.
Original languageEnglish
JournalRenewable Energy
Volume111
Pages (from-to)392–398
Number of pages7
ISSN0960-1481
DOIs
Publication statusPublished - Oct 2017

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Sawdust
Liquefaction
Wood
Ashes
Feedstocks
Leaching
Manures
Citric acid
Straw
Byproducts
Availability
Acids

Keywords

  • Thermochemical conversion
  • Agricultural residue
  • Biofuel
  • Waste utilisation
  • Demineralisation
  • Biomass

Cite this

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title = "Biocrude production via supercritical hydrothermal co-liquefaction of spent mushroom compost and aspen wood sawdust",
abstract = "The work investigates a new potential feedstock source for hydrothermal liquefaction (HTL) driven biocrude production. Specifically, the focus is set on utilizing spent mushroom compost (SMC), the primary waste by-product from mushroom farming. It is considered as a feedstock for HTL conversion due to its organic nature (e.g. straw, horse manure and sphagnum) and ample availability with an annual production of over 3.4 million metric tonnes, globally. Locally acquired samples were analyzed and converted hydrothermally. A biocrude yield of 48{\%} on dry ash-free (DAF) basis was obtained but it was accompanied by a solid fraction (organics and inorganics) of 50{\%} on dry basis, considered to be critically high in a continuous HTL context. Acid leaching (citric acid) of the SMC and co-liquefaction (with aspen wood (AW)) was investigated as means to decrease the solid fraction. Whereas the SMC leaching showed to be ineffective, co-liquefaction showed potential. The solid fraction could be reduced to half (24.5{\%}) by mixing SMC:AW in a 1:3 mass ratio.",
keywords = "Thermochemical conversion, Agricultural residue, Biofuel, Waste utilisation, Demineralisation, Biomass",
author = "Lukas Jasiunas and Pedersen, {Thomas Helmer} and Toor, {Saqib Sohail} and Rosendahl, {Lasse Aistrup}",
year = "2017",
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language = "English",
volume = "111",
pages = "392–398",
journal = "Renewable Energy",
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publisher = "Pergamon Press",

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Biocrude production via supercritical hydrothermal co-liquefaction of spent mushroom compost and aspen wood sawdust. / Jasiunas, Lukas; Pedersen, Thomas Helmer; Toor, Saqib Sohail; Rosendahl, Lasse Aistrup.

In: Renewable Energy, Vol. 111, 10.2017, p. 392–398.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Biocrude production via supercritical hydrothermal co-liquefaction of spent mushroom compost and aspen wood sawdust

AU - Jasiunas, Lukas

AU - Pedersen, Thomas Helmer

AU - Toor, Saqib Sohail

AU - Rosendahl, Lasse Aistrup

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AB - The work investigates a new potential feedstock source for hydrothermal liquefaction (HTL) driven biocrude production. Specifically, the focus is set on utilizing spent mushroom compost (SMC), the primary waste by-product from mushroom farming. It is considered as a feedstock for HTL conversion due to its organic nature (e.g. straw, horse manure and sphagnum) and ample availability with an annual production of over 3.4 million metric tonnes, globally. Locally acquired samples were analyzed and converted hydrothermally. A biocrude yield of 48% on dry ash-free (DAF) basis was obtained but it was accompanied by a solid fraction (organics and inorganics) of 50% on dry basis, considered to be critically high in a continuous HTL context. Acid leaching (citric acid) of the SMC and co-liquefaction (with aspen wood (AW)) was investigated as means to decrease the solid fraction. Whereas the SMC leaching showed to be ineffective, co-liquefaction showed potential. The solid fraction could be reduced to half (24.5%) by mixing SMC:AW in a 1:3 mass ratio.

KW - Thermochemical conversion

KW - Agricultural residue

KW - Biofuel

KW - Waste utilisation

KW - Demineralisation

KW - Biomass

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