Modification of the lignin structure during alkaline delignification of eucalyptus wood by kraft, soda-AQ, and soda-O2 cooking

P. Prinsen, J. Rencoret, A. Gutiérrez, Tiina Liitiä, Tarja Tamminen, J.L. Colodette, M.A. Berbis, J. Jiménez-Barbero, A.T. Martínez, J.C. Del Río (Corresponding Author)

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

The modification of the lignin structure of an eucalyptus feedstock during alkaline delignification by kraft, soda-AQ, and soda-O2 cooking processes has been investigated by different analytical techniques (size exclusion chromatography (SEC), pyrolysis gas chromatography–mass spectroscopy (Py-GC/MS), 1H–13C two-dimensional nuclear magnetic resonance (2D-NMR), and 31P NMR). The characteristics of the lignins were compared at different pulp kappa levels, and with the native lignin isolated from the wood. The structural differences between the kraft, soda-AQ, and soda-O2 residual lignins were more significant at earlier pulping stages. At the final stages, all the lignin characteristics were similar, with the exception of their phenolic content. Strong differences between lignins from pulps and cooking liquors were observed, including enrichment in guaiacyl units in pulp residual lignin and enrichment in syringyl units in black liquor lignin. A comparison of the alkaline cookings indicate that soda-O2 process produced higher lignin degradation and provided promising results as pretreatment for the deconstruction of eucalyptus feedstocks for subsequent use in lignocellulose biorefineries.
Original languageEnglish
Pages (from-to)15702-15712
Number of pages10
JournalIndustrial & Engineering Chemistry Research
Volume52
Issue number45
DOIs
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed

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Delignification
Lignin
Cooking
Wood
Pulp
Nuclear magnetic resonance
Feedstocks
Pulp cooking
Size exclusion chromatography
Pyrolysis
Gases
Spectroscopy
Degradation

Cite this

Prinsen, P. ; Rencoret, J. ; Gutiérrez, A. ; Liitiä, Tiina ; Tamminen, Tarja ; Colodette, J.L. ; Berbis, M.A. ; Jiménez-Barbero, J. ; Martínez, A.T. ; Del Río, J.C. / Modification of the lignin structure during alkaline delignification of eucalyptus wood by kraft, soda-AQ, and soda-O2 cooking. In: Industrial & Engineering Chemistry Research. 2013 ; Vol. 52, No. 45. pp. 15702-15712.
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title = "Modification of the lignin structure during alkaline delignification of eucalyptus wood by kraft, soda-AQ, and soda-O2 cooking",
abstract = "The modification of the lignin structure of an eucalyptus feedstock during alkaline delignification by kraft, soda-AQ, and soda-O2 cooking processes has been investigated by different analytical techniques (size exclusion chromatography (SEC), pyrolysis gas chromatography–mass spectroscopy (Py-GC/MS), 1H–13C two-dimensional nuclear magnetic resonance (2D-NMR), and 31P NMR). The characteristics of the lignins were compared at different pulp kappa levels, and with the native lignin isolated from the wood. The structural differences between the kraft, soda-AQ, and soda-O2 residual lignins were more significant at earlier pulping stages. At the final stages, all the lignin characteristics were similar, with the exception of their phenolic content. Strong differences between lignins from pulps and cooking liquors were observed, including enrichment in guaiacyl units in pulp residual lignin and enrichment in syringyl units in black liquor lignin. A comparison of the alkaline cookings indicate that soda-O2 process produced higher lignin degradation and provided promising results as pretreatment for the deconstruction of eucalyptus feedstocks for subsequent use in lignocellulose biorefineries.",
author = "P. Prinsen and J. Rencoret and A. Guti{\'e}rrez and Tiina Liiti{\"a} and Tarja Tamminen and J.L. Colodette and M.A. Berbis and J. Jim{\'e}nez-Barbero and A.T. Mart{\'i}nez and {Del R{\'i}o}, J.C.",
year = "2013",
doi = "10.1021/ie401364d",
language = "English",
volume = "52",
pages = "15702--15712",
journal = "Industrial & Engineering Chemistry Research",
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Prinsen, P, Rencoret, J, Gutiérrez, A, Liitiä, T, Tamminen, T, Colodette, JL, Berbis, MA, Jiménez-Barbero, J, Martínez, AT & Del Río, JC 2013, 'Modification of the lignin structure during alkaline delignification of eucalyptus wood by kraft, soda-AQ, and soda-O2 cooking', Industrial & Engineering Chemistry Research, vol. 52, no. 45, pp. 15702-15712. https://doi.org/10.1021/ie401364d

Modification of the lignin structure during alkaline delignification of eucalyptus wood by kraft, soda-AQ, and soda-O2 cooking. / Prinsen, P.; Rencoret, J.; Gutiérrez, A.; Liitiä, Tiina; Tamminen, Tarja; Colodette, J.L.; Berbis, M.A.; Jiménez-Barbero, J.; Martínez, A.T.; Del Río, J.C. (Corresponding Author).

In: Industrial & Engineering Chemistry Research, Vol. 52, No. 45, 2013, p. 15702-15712.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Modification of the lignin structure during alkaline delignification of eucalyptus wood by kraft, soda-AQ, and soda-O2 cooking

AU - Prinsen, P.

AU - Rencoret, J.

AU - Gutiérrez, A.

AU - Liitiä, Tiina

AU - Tamminen, Tarja

AU - Colodette, J.L.

AU - Berbis, M.A.

AU - Jiménez-Barbero, J.

AU - Martínez, A.T.

AU - Del Río, J.C.

PY - 2013

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N2 - The modification of the lignin structure of an eucalyptus feedstock during alkaline delignification by kraft, soda-AQ, and soda-O2 cooking processes has been investigated by different analytical techniques (size exclusion chromatography (SEC), pyrolysis gas chromatography–mass spectroscopy (Py-GC/MS), 1H–13C two-dimensional nuclear magnetic resonance (2D-NMR), and 31P NMR). The characteristics of the lignins were compared at different pulp kappa levels, and with the native lignin isolated from the wood. The structural differences between the kraft, soda-AQ, and soda-O2 residual lignins were more significant at earlier pulping stages. At the final stages, all the lignin characteristics were similar, with the exception of their phenolic content. Strong differences between lignins from pulps and cooking liquors were observed, including enrichment in guaiacyl units in pulp residual lignin and enrichment in syringyl units in black liquor lignin. A comparison of the alkaline cookings indicate that soda-O2 process produced higher lignin degradation and provided promising results as pretreatment for the deconstruction of eucalyptus feedstocks for subsequent use in lignocellulose biorefineries.

AB - The modification of the lignin structure of an eucalyptus feedstock during alkaline delignification by kraft, soda-AQ, and soda-O2 cooking processes has been investigated by different analytical techniques (size exclusion chromatography (SEC), pyrolysis gas chromatography–mass spectroscopy (Py-GC/MS), 1H–13C two-dimensional nuclear magnetic resonance (2D-NMR), and 31P NMR). The characteristics of the lignins were compared at different pulp kappa levels, and with the native lignin isolated from the wood. The structural differences between the kraft, soda-AQ, and soda-O2 residual lignins were more significant at earlier pulping stages. At the final stages, all the lignin characteristics were similar, with the exception of their phenolic content. Strong differences between lignins from pulps and cooking liquors were observed, including enrichment in guaiacyl units in pulp residual lignin and enrichment in syringyl units in black liquor lignin. A comparison of the alkaline cookings indicate that soda-O2 process produced higher lignin degradation and provided promising results as pretreatment for the deconstruction of eucalyptus feedstocks for subsequent use in lignocellulose biorefineries.

U2 - 10.1021/ie401364d

DO - 10.1021/ie401364d

M3 - Article

VL - 52

SP - 15702

EP - 15712

JO - Industrial & Engineering Chemistry Research

JF - Industrial & Engineering Chemistry Research

SN - 0888-5885

IS - 45

ER -