Birch wood pre-hydrolysis vs pulp post-hydrolysis for the production of xylan-based compounds and cellulose for viscose application

Marc Borrega (Corresponding Author), Per Tomas Larsson, Patrik Ahvenainen, Sara Ceccherini, Thaddeus Maloney, Lauri Rautkari, Herbert Sixta

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

Hydrothermal treatments of birch wood and kraft pulp were compared for their ability to extract the xylan and produce viscose-grade pulp. Water post-hydrolysis of kraft pulp produced a high-purity cellulosic pulp with lower viscosity but higher cellulose yield than traditional pre-hydrolysis kraft pulping of wood. Post-hydrolysis of pulp also increased the crystallite dimensions and degree of crystallinity in cellulose, and promoted a higher extent of fibril aggregation. The lower specific surface area in post-hydrolyzed pulps, derived from their larger fibril aggregates, decreased the accessibility of –OH groups. However, this lower accessibility did not seem to decrease the pulp reactivity to derivatizing chemicals. In the aqueous side-stream, the xylose yield was similar in both pre- and post-hydrolysates, although conducting post-hydrolysis of pulp in a flow-through system enabled the recovery of high purity and molar mass (∼10 kDa) xylan for high-value applications.

Original languageEnglish
Pages (from-to)212-221
Number of pages10
JournalCarbohydrate Polymers
Volume190
DOIs
Publication statusPublished - 15 Jun 2018
MoE publication typeA1 Journal article-refereed

Fingerprint

Xylans
Cellulose
Pulp
Hydrolysis
Wood
Kraft pulp
Kraft process
Xylose
Molar mass
Specific surface area
Agglomeration
Viscosity
Recovery
Water

Keywords

  • Cellulose
  • Dissolving pulp
  • Hydrothermal treatment
  • Viscose
  • Xylan

Cite this

Borrega, Marc ; Larsson, Per Tomas ; Ahvenainen, Patrik ; Ceccherini, Sara ; Maloney, Thaddeus ; Rautkari, Lauri ; Sixta, Herbert. / Birch wood pre-hydrolysis vs pulp post-hydrolysis for the production of xylan-based compounds and cellulose for viscose application. In: Carbohydrate Polymers. 2018 ; Vol. 190. pp. 212-221.
@article{d6884dfdfefc425ea32a99a2b11ba4a4,
title = "Birch wood pre-hydrolysis vs pulp post-hydrolysis for the production of xylan-based compounds and cellulose for viscose application",
abstract = "Hydrothermal treatments of birch wood and kraft pulp were compared for their ability to extract the xylan and produce viscose-grade pulp. Water post-hydrolysis of kraft pulp produced a high-purity cellulosic pulp with lower viscosity but higher cellulose yield than traditional pre-hydrolysis kraft pulping of wood. Post-hydrolysis of pulp also increased the crystallite dimensions and degree of crystallinity in cellulose, and promoted a higher extent of fibril aggregation. The lower specific surface area in post-hydrolyzed pulps, derived from their larger fibril aggregates, decreased the accessibility of –OH groups. However, this lower accessibility did not seem to decrease the pulp reactivity to derivatizing chemicals. In the aqueous side-stream, the xylose yield was similar in both pre- and post-hydrolysates, although conducting post-hydrolysis of pulp in a flow-through system enabled the recovery of high purity and molar mass (∼10 kDa) xylan for high-value applications.",
keywords = "Cellulose, Dissolving pulp, Hydrothermal treatment, Viscose, Xylan",
author = "Marc Borrega and Larsson, {Per Tomas} and Patrik Ahvenainen and Sara Ceccherini and Thaddeus Maloney and Lauri Rautkari and Herbert Sixta",
year = "2018",
month = "6",
day = "15",
doi = "10.1016/j.carbpol.2018.02.064",
language = "English",
volume = "190",
pages = "212--221",
journal = "Carbohydrate Polymers",
issn = "0144-8617",
publisher = "Elsevier",

}

Birch wood pre-hydrolysis vs pulp post-hydrolysis for the production of xylan-based compounds and cellulose for viscose application. / Borrega, Marc (Corresponding Author); Larsson, Per Tomas; Ahvenainen, Patrik; Ceccherini, Sara; Maloney, Thaddeus; Rautkari, Lauri; Sixta, Herbert.

In: Carbohydrate Polymers, Vol. 190, 15.06.2018, p. 212-221.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Birch wood pre-hydrolysis vs pulp post-hydrolysis for the production of xylan-based compounds and cellulose for viscose application

AU - Borrega, Marc

AU - Larsson, Per Tomas

AU - Ahvenainen, Patrik

AU - Ceccherini, Sara

AU - Maloney, Thaddeus

AU - Rautkari, Lauri

AU - Sixta, Herbert

PY - 2018/6/15

Y1 - 2018/6/15

N2 - Hydrothermal treatments of birch wood and kraft pulp were compared for their ability to extract the xylan and produce viscose-grade pulp. Water post-hydrolysis of kraft pulp produced a high-purity cellulosic pulp with lower viscosity but higher cellulose yield than traditional pre-hydrolysis kraft pulping of wood. Post-hydrolysis of pulp also increased the crystallite dimensions and degree of crystallinity in cellulose, and promoted a higher extent of fibril aggregation. The lower specific surface area in post-hydrolyzed pulps, derived from their larger fibril aggregates, decreased the accessibility of –OH groups. However, this lower accessibility did not seem to decrease the pulp reactivity to derivatizing chemicals. In the aqueous side-stream, the xylose yield was similar in both pre- and post-hydrolysates, although conducting post-hydrolysis of pulp in a flow-through system enabled the recovery of high purity and molar mass (∼10 kDa) xylan for high-value applications.

AB - Hydrothermal treatments of birch wood and kraft pulp were compared for their ability to extract the xylan and produce viscose-grade pulp. Water post-hydrolysis of kraft pulp produced a high-purity cellulosic pulp with lower viscosity but higher cellulose yield than traditional pre-hydrolysis kraft pulping of wood. Post-hydrolysis of pulp also increased the crystallite dimensions and degree of crystallinity in cellulose, and promoted a higher extent of fibril aggregation. The lower specific surface area in post-hydrolyzed pulps, derived from their larger fibril aggregates, decreased the accessibility of –OH groups. However, this lower accessibility did not seem to decrease the pulp reactivity to derivatizing chemicals. In the aqueous side-stream, the xylose yield was similar in both pre- and post-hydrolysates, although conducting post-hydrolysis of pulp in a flow-through system enabled the recovery of high purity and molar mass (∼10 kDa) xylan for high-value applications.

KW - Cellulose

KW - Dissolving pulp

KW - Hydrothermal treatment

KW - Viscose

KW - Xylan

UR - http://www.scopus.com/inward/record.url?scp=85042777891&partnerID=8YFLogxK

U2 - 10.1016/j.carbpol.2018.02.064

DO - 10.1016/j.carbpol.2018.02.064

M3 - Article

VL - 190

SP - 212

EP - 221

JO - Carbohydrate Polymers

JF - Carbohydrate Polymers

SN - 0144-8617

ER -