Refining of Ethanol Biorefinery Residues to Isolate Value Added Lignins

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Refining of Ethanol Biorefinery Residues to Isolate Value Added Lignins. / Leskinen, Timo; Kelley, Stephen S.; Argyropoulos, Dimitris S.

julkaisussa: ACS Sustainable Chemistry and Engineering, Vuosikerta 3, Nro 7, 06.07.2015, s. 1632-1641.

Tutkimustuotos: Lehtiartikkeli

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Leskinen, Timo ; Kelley, Stephen S. ; Argyropoulos, Dimitris S. / Refining of Ethanol Biorefinery Residues to Isolate Value Added Lignins. Julkaisussa: ACS Sustainable Chemistry and Engineering. 2015 ; Vuosikerta 3, Nro 7. Sivut 1632-1641.

Bibtex - Lataa

@article{b828323e56994a84b5fc6eca4280e236,
title = "Refining of Ethanol Biorefinery Residues to Isolate Value Added Lignins",
abstract = "The isolation of lignin coproducts from the residual solids of a hardwood based biocatalytic bioethanol process was examined, using extraction methods based on aqueous alkali or aqueous ethanol. This work focused on understanding how the structural features of raw lignin in the process residue influenced the refined lignin isolation yields, in addition to polymeric and structural characteristics. On the basis of this approach, the extraction based lignin refining could be optimized. Mild extraction conditions allowed for recovery of approximately 40 wt {\%} of the lignin present in the starting material. This yield could be increased to about 76 wt {\%}, by the application of base or acid catalyzed reactive extraction conditions liberating the bonded insoluble fractions of the residue. All isolated lignin products were characterized in terms of their functional groups, molecular weights and thermal properties. The lignins from mild alkali and ethanol extractions showed similarities in their chemical profiles. In contrast, the reactive extractions and degradative aqueous treatments produced structurally different lignins. As expected, the molecular weight and the thermal properties of the isolated lignins were affected by the isolation process and these differences are rationalized. (Figure Presented).",
keywords = "Biorefinery residue, Extraction, Lignin, Molecular weight, Thermal properties",
author = "Timo Leskinen and Kelley, {Stephen S.} and Argyropoulos, {Dimitris S.}",
year = "2015",
month = "7",
day = "6",
doi = "10.1021/acssuschemeng.5b00337",
language = "English",
volume = "3",
pages = "1632--1641",
journal = "ACS Sustainable Chemistry and Engineering",
issn = "2168-0485",
publisher = "AMERICAN CHEMICAL SOCIETY",
number = "7",

}

RIS - Lataa

TY - JOUR

T1 - Refining of Ethanol Biorefinery Residues to Isolate Value Added Lignins

AU - Leskinen, Timo

AU - Kelley, Stephen S.

AU - Argyropoulos, Dimitris S.

PY - 2015/7/6

Y1 - 2015/7/6

N2 - The isolation of lignin coproducts from the residual solids of a hardwood based biocatalytic bioethanol process was examined, using extraction methods based on aqueous alkali or aqueous ethanol. This work focused on understanding how the structural features of raw lignin in the process residue influenced the refined lignin isolation yields, in addition to polymeric and structural characteristics. On the basis of this approach, the extraction based lignin refining could be optimized. Mild extraction conditions allowed for recovery of approximately 40 wt % of the lignin present in the starting material. This yield could be increased to about 76 wt %, by the application of base or acid catalyzed reactive extraction conditions liberating the bonded insoluble fractions of the residue. All isolated lignin products were characterized in terms of their functional groups, molecular weights and thermal properties. The lignins from mild alkali and ethanol extractions showed similarities in their chemical profiles. In contrast, the reactive extractions and degradative aqueous treatments produced structurally different lignins. As expected, the molecular weight and the thermal properties of the isolated lignins were affected by the isolation process and these differences are rationalized. (Figure Presented).

AB - The isolation of lignin coproducts from the residual solids of a hardwood based biocatalytic bioethanol process was examined, using extraction methods based on aqueous alkali or aqueous ethanol. This work focused on understanding how the structural features of raw lignin in the process residue influenced the refined lignin isolation yields, in addition to polymeric and structural characteristics. On the basis of this approach, the extraction based lignin refining could be optimized. Mild extraction conditions allowed for recovery of approximately 40 wt % of the lignin present in the starting material. This yield could be increased to about 76 wt %, by the application of base or acid catalyzed reactive extraction conditions liberating the bonded insoluble fractions of the residue. All isolated lignin products were characterized in terms of their functional groups, molecular weights and thermal properties. The lignins from mild alkali and ethanol extractions showed similarities in their chemical profiles. In contrast, the reactive extractions and degradative aqueous treatments produced structurally different lignins. As expected, the molecular weight and the thermal properties of the isolated lignins were affected by the isolation process and these differences are rationalized. (Figure Presented).

KW - Biorefinery residue

KW - Extraction

KW - Lignin

KW - Molecular weight

KW - Thermal properties

UR - http://www.scopus.com/inward/record.url?scp=84936764610&partnerID=8YFLogxK

U2 - 10.1021/acssuschemeng.5b00337

DO - 10.1021/acssuschemeng.5b00337

M3 - Article

VL - 3

SP - 1632

EP - 1641

JO - ACS Sustainable Chemistry and Engineering

JF - ACS Sustainable Chemistry and Engineering

SN - 2168-0485

IS - 7

ER -

ID: 7030037