Optimisation of acetic acid lignofibre organosolv process

Heli Kangas (Corresponding Author), Terhi K. Hakala, Tarja Tamminen, Marjo Määttänen, Stella Rovio, Tiina Liitiä, Kristiina Poppius-Levlin

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

Birch wood chips were cooked in acetic acid in the presence of phosphinic acid according to the Lignofibre (LGF) organosolv process. The cooking trials were performed according to an experimental design with process time, temperature, and the presence (or absence) of alkaline pre-extraction as the factors. Delignification was enhanced by increased temperature and alkaline pre-extraction. Alkaline extraction also limited xylose hydrolysis, as well as the further degradation of xylose into furfural. Degradation and condensation reactions began to take place between dissolved carbohydrates and lignin at higher temperatures and longer cooking times. Formation of pseudolignin, most likely because of reactions between lignin and furfural, was also observed under the harshest cooking conditions. To avoid these unwanted side-reactions, minimise viscosity losses, and preserve the yield, the LGF process time should be limited to 3 to 4 h at 150 °C.
Original languageEnglish
Pages (from-to)2699-2718
JournalBioResources
Volume10
Issue number2
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

Fingerprint

Cooking
Acetic acid
Acetic Acid
acetic acid
Furaldehyde
Furfural
Xylose
Lignin
lignin
Phosphinic Acids
Degradation
Delignification
degradation
Condensation reactions
Carbohydrates
experimental design
Design of experiments
Temperature
condensation
carbohydrate

Keywords

  • acetic acid
  • alkaline extraction
  • furfural
  • lignofibre
  • organosolv process
  • phosphinic acid
  • pseudolignin
  • xylose

Cite this

Kangas, Heli ; Hakala, Terhi K. ; Tamminen, Tarja ; Määttänen, Marjo ; Rovio, Stella ; Liitiä, Tiina ; Poppius-Levlin, Kristiina. / Optimisation of acetic acid lignofibre organosolv process. In: BioResources. 2015 ; Vol. 10, No. 2. pp. 2699-2718.
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title = "Optimisation of acetic acid lignofibre organosolv process",
abstract = "Birch wood chips were cooked in acetic acid in the presence of phosphinic acid according to the Lignofibre (LGF) organosolv process. The cooking trials were performed according to an experimental design with process time, temperature, and the presence (or absence) of alkaline pre-extraction as the factors. Delignification was enhanced by increased temperature and alkaline pre-extraction. Alkaline extraction also limited xylose hydrolysis, as well as the further degradation of xylose into furfural. Degradation and condensation reactions began to take place between dissolved carbohydrates and lignin at higher temperatures and longer cooking times. Formation of pseudolignin, most likely because of reactions between lignin and furfural, was also observed under the harshest cooking conditions. To avoid these unwanted side-reactions, minimise viscosity losses, and preserve the yield, the LGF process time should be limited to 3 to 4 h at 150 °C.",
keywords = "acetic acid, alkaline extraction, furfural, lignofibre, organosolv process, phosphinic acid, pseudolignin, xylose",
author = "Heli Kangas and Hakala, {Terhi K.} and Tarja Tamminen and Marjo M{\"a}{\"a}tt{\"a}nen and Stella Rovio and Tiina Liiti{\"a} and Kristiina Poppius-Levlin",
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language = "English",
volume = "10",
pages = "2699--2718",
journal = "BioResources",
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Kangas, H, Hakala, TK, Tamminen, T, Määttänen, M, Rovio, S, Liitiä, T & Poppius-Levlin, K 2015, 'Optimisation of acetic acid lignofibre organosolv process', BioResources, vol. 10, no. 2, pp. 2699-2718.

Optimisation of acetic acid lignofibre organosolv process. / Kangas, Heli (Corresponding Author); Hakala, Terhi K.; Tamminen, Tarja; Määttänen, Marjo; Rovio, Stella; Liitiä, Tiina; Poppius-Levlin, Kristiina.

In: BioResources, Vol. 10, No. 2, 2015, p. 2699-2718.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Optimisation of acetic acid lignofibre organosolv process

AU - Kangas, Heli

AU - Hakala, Terhi K.

AU - Tamminen, Tarja

AU - Määttänen, Marjo

AU - Rovio, Stella

AU - Liitiä, Tiina

AU - Poppius-Levlin, Kristiina

N1 - Project code: 100332

PY - 2015

Y1 - 2015

N2 - Birch wood chips were cooked in acetic acid in the presence of phosphinic acid according to the Lignofibre (LGF) organosolv process. The cooking trials were performed according to an experimental design with process time, temperature, and the presence (or absence) of alkaline pre-extraction as the factors. Delignification was enhanced by increased temperature and alkaline pre-extraction. Alkaline extraction also limited xylose hydrolysis, as well as the further degradation of xylose into furfural. Degradation and condensation reactions began to take place between dissolved carbohydrates and lignin at higher temperatures and longer cooking times. Formation of pseudolignin, most likely because of reactions between lignin and furfural, was also observed under the harshest cooking conditions. To avoid these unwanted side-reactions, minimise viscosity losses, and preserve the yield, the LGF process time should be limited to 3 to 4 h at 150 °C.

AB - Birch wood chips were cooked in acetic acid in the presence of phosphinic acid according to the Lignofibre (LGF) organosolv process. The cooking trials were performed according to an experimental design with process time, temperature, and the presence (or absence) of alkaline pre-extraction as the factors. Delignification was enhanced by increased temperature and alkaline pre-extraction. Alkaline extraction also limited xylose hydrolysis, as well as the further degradation of xylose into furfural. Degradation and condensation reactions began to take place between dissolved carbohydrates and lignin at higher temperatures and longer cooking times. Formation of pseudolignin, most likely because of reactions between lignin and furfural, was also observed under the harshest cooking conditions. To avoid these unwanted side-reactions, minimise viscosity losses, and preserve the yield, the LGF process time should be limited to 3 to 4 h at 150 °C.

KW - acetic acid

KW - alkaline extraction

KW - furfural

KW - lignofibre

KW - organosolv process

KW - phosphinic acid

KW - pseudolignin

KW - xylose

M3 - Article

VL - 10

SP - 2699

EP - 2718

JO - BioResources

JF - BioResources

SN - 1930-2126

IS - 2

ER -