Hydrothermal liquefaction of softwood: selective chemical production under oxidative conditions

Mika Sipponen (Corresponding Author), Karhan Özdenkci, Hassan Raja Aja Muddassar, Kristian Melin, Sarwar Golam, Pekka A Oinas

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)

Abstract

This work was conducted to determine the effect of oxygen on hydrothermal liquefaction of softwood for the production of valuable chemicals. Softwood was subjected to liquefaction in the presence and absence of either 1.6 g/L sodium carbonate or 5 bar oxygen gas. The oxygen supplementation diverted sugars from dehydration toward oxidation resulting in 4-fold elevated yields of organic acids. Dissolved sugars and furans showed maxima in narrow temperature regions of 170-190 and 210-230 °C while the yields (weight percentage based on dry wood) of organic acids, phenolic substances, and bio-oil reached their respective maxima of 10.4%, 3.5%, and 7.4% at 230-270 °C. These results of oxidative hydrothermal liquefaction advance sustainable production of chemicals from renewable lignocellulose.
Original languageEnglish
Pages (from-to)3978-3984
JournalACS Sustainable Chemistry & Engineering
Volume4
Issue number7
DOIs
Publication statusPublished - 2016
MoE publication typeA1 Journal article-refereed

Fingerprint

Softwoods
Liquefaction
liquefaction
Organic acids
Oxygen
organic acid
Sugars
oxygen
sugar
Furans
furan
Dehydration
dehydration
Carbonates
Wood
Oils
Gases
Sodium
sodium
fold

Keywords

  • cellulose
  • lignin
  • organic acids
  • oxidation
  • oxygen
  • softwoods
  • sugars
  • aqueous
  • lignocellulose
  • renewable
  • sustainable
  • treatment

Cite this

Sipponen, Mika ; Özdenkci, Karhan ; Muddassar, Hassan Raja Aja ; Melin, Kristian ; Golam, Sarwar ; Oinas, Pekka A. / Hydrothermal liquefaction of softwood: selective chemical production under oxidative conditions. In: ACS Sustainable Chemistry & Engineering. 2016 ; Vol. 4, No. 7. pp. 3978-3984.
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Hydrothermal liquefaction of softwood: selective chemical production under oxidative conditions. / Sipponen, Mika (Corresponding Author); Özdenkci, Karhan; Muddassar, Hassan Raja Aja; Melin, Kristian; Golam, Sarwar; Oinas, Pekka A.

In: ACS Sustainable Chemistry & Engineering, Vol. 4, No. 7, 2016, p. 3978-3984.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Hydrothermal liquefaction of softwood: selective chemical production under oxidative conditions

AU - Sipponen, Mika

AU - Özdenkci, Karhan

AU - Muddassar, Hassan Raja Aja

AU - Melin, Kristian

AU - Golam, Sarwar

AU - Oinas, Pekka A

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N2 - This work was conducted to determine the effect of oxygen on hydrothermal liquefaction of softwood for the production of valuable chemicals. Softwood was subjected to liquefaction in the presence and absence of either 1.6 g/L sodium carbonate or 5 bar oxygen gas. The oxygen supplementation diverted sugars from dehydration toward oxidation resulting in 4-fold elevated yields of organic acids. Dissolved sugars and furans showed maxima in narrow temperature regions of 170-190 and 210-230 °C while the yields (weight percentage based on dry wood) of organic acids, phenolic substances, and bio-oil reached their respective maxima of 10.4%, 3.5%, and 7.4% at 230-270 °C. These results of oxidative hydrothermal liquefaction advance sustainable production of chemicals from renewable lignocellulose.

AB - This work was conducted to determine the effect of oxygen on hydrothermal liquefaction of softwood for the production of valuable chemicals. Softwood was subjected to liquefaction in the presence and absence of either 1.6 g/L sodium carbonate or 5 bar oxygen gas. The oxygen supplementation diverted sugars from dehydration toward oxidation resulting in 4-fold elevated yields of organic acids. Dissolved sugars and furans showed maxima in narrow temperature regions of 170-190 and 210-230 °C while the yields (weight percentage based on dry wood) of organic acids, phenolic substances, and bio-oil reached their respective maxima of 10.4%, 3.5%, and 7.4% at 230-270 °C. These results of oxidative hydrothermal liquefaction advance sustainable production of chemicals from renewable lignocellulose.

KW - cellulose

KW - lignin

KW - organic acids

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KW - oxygen

KW - softwoods

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KW - lignocellulose

KW - renewable

KW - sustainable

KW - treatment

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JO - ACS Sustainable Chemistry & Engineering

JF - ACS Sustainable Chemistry & Engineering

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