Activated carbon treatment to improve ultrafiltration performance in recovery of hemicelluloses from wood extracts

Elsi Strand, Mari Kallioinen (Corresponding Author), Marjatta A. Kleen, Mika Mänttäri

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Abstract

Adsorption of lignin and wood extractives on activated carbon (AC) at high temperature prior to ultrafiltration (UF) was shown to significantly improve filtration capacity about 1.5 fold in recovery of hemicelluloses from wood extracts. Furthermore, adsorption pretreatment enabled the production of purer concentrated high-molecular-mass hemicellulose fractions. For instance, purity of the produced concentrated spruce fraction was more than 20% units higher when the AC treatment was used prior to UF compared to the fraction produced without the pretreatment. AC adsorbed lignin and wood extractives. In addition, AC treatment caused some hemicellulose losses. The results indicated that at least part of the hemicelluloses was adsorbed onto the AC in ligninhemicellulose complexes. It seemed that also xylans containing 4-O-Me-glucuronic acid might have been removed by adsorption. However, AC was nonetheless clearly selective to lignin over hemicelluloses. Adsorption on activated carbon removed from the wood extract more high-molecular-mass compounds than smaller ones. The decrease in molecular mass was compensated to some extent in UF, since concentration filtration increased molecular mass significantly.
Original languageEnglish
Pages (from-to)207-214
JournalNordic Pulp and Paper Research Journal
Volume30
Issue number2
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

Fingerprint

Activated carbon treatment
wood extractives
Ultrafiltration
activated carbon
ultrafiltration
hemicellulose
Activated carbon
Molecular mass
Wood
Lignin
Recovery
Adsorption
adsorption
molecular weight
lignin
Xylans
Glucuronic Acid
pretreatment
glucuronic acid
xylan

Keywords

  • adsorption
  • birch
  • lignin removal
  • membrane filtration
  • spruce

Cite this

Strand, Elsi ; Kallioinen, Mari ; Kleen, Marjatta A. ; Mänttäri, Mika. / Activated carbon treatment to improve ultrafiltration performance in recovery of hemicelluloses from wood extracts. In: Nordic Pulp and Paper Research Journal. 2015 ; Vol. 30, No. 2. pp. 207-214.
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abstract = "Adsorption of lignin and wood extractives on activated carbon (AC) at high temperature prior to ultrafiltration (UF) was shown to significantly improve filtration capacity about 1.5 fold in recovery of hemicelluloses from wood extracts. Furthermore, adsorption pretreatment enabled the production of purer concentrated high-molecular-mass hemicellulose fractions. For instance, purity of the produced concentrated spruce fraction was more than 20{\%} units higher when the AC treatment was used prior to UF compared to the fraction produced without the pretreatment. AC adsorbed lignin and wood extractives. In addition, AC treatment caused some hemicellulose losses. The results indicated that at least part of the hemicelluloses was adsorbed onto the AC in ligninhemicellulose complexes. It seemed that also xylans containing 4-O-Me-glucuronic acid might have been removed by adsorption. However, AC was nonetheless clearly selective to lignin over hemicelluloses. Adsorption on activated carbon removed from the wood extract more high-molecular-mass compounds than smaller ones. The decrease in molecular mass was compensated to some extent in UF, since concentration filtration increased molecular mass significantly.",
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Activated carbon treatment to improve ultrafiltration performance in recovery of hemicelluloses from wood extracts. / Strand, Elsi; Kallioinen, Mari (Corresponding Author); Kleen, Marjatta A.; Mänttäri, Mika.

In: Nordic Pulp and Paper Research Journal, Vol. 30, No. 2, 2015, p. 207-214.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Activated carbon treatment to improve ultrafiltration performance in recovery of hemicelluloses from wood extracts

AU - Strand, Elsi

AU - Kallioinen, Mari

AU - Kleen, Marjatta A.

AU - Mänttäri, Mika

PY - 2015

Y1 - 2015

N2 - Adsorption of lignin and wood extractives on activated carbon (AC) at high temperature prior to ultrafiltration (UF) was shown to significantly improve filtration capacity about 1.5 fold in recovery of hemicelluloses from wood extracts. Furthermore, adsorption pretreatment enabled the production of purer concentrated high-molecular-mass hemicellulose fractions. For instance, purity of the produced concentrated spruce fraction was more than 20% units higher when the AC treatment was used prior to UF compared to the fraction produced without the pretreatment. AC adsorbed lignin and wood extractives. In addition, AC treatment caused some hemicellulose losses. The results indicated that at least part of the hemicelluloses was adsorbed onto the AC in ligninhemicellulose complexes. It seemed that also xylans containing 4-O-Me-glucuronic acid might have been removed by adsorption. However, AC was nonetheless clearly selective to lignin over hemicelluloses. Adsorption on activated carbon removed from the wood extract more high-molecular-mass compounds than smaller ones. The decrease in molecular mass was compensated to some extent in UF, since concentration filtration increased molecular mass significantly.

AB - Adsorption of lignin and wood extractives on activated carbon (AC) at high temperature prior to ultrafiltration (UF) was shown to significantly improve filtration capacity about 1.5 fold in recovery of hemicelluloses from wood extracts. Furthermore, adsorption pretreatment enabled the production of purer concentrated high-molecular-mass hemicellulose fractions. For instance, purity of the produced concentrated spruce fraction was more than 20% units higher when the AC treatment was used prior to UF compared to the fraction produced without the pretreatment. AC adsorbed lignin and wood extractives. In addition, AC treatment caused some hemicellulose losses. The results indicated that at least part of the hemicelluloses was adsorbed onto the AC in ligninhemicellulose complexes. It seemed that also xylans containing 4-O-Me-glucuronic acid might have been removed by adsorption. However, AC was nonetheless clearly selective to lignin over hemicelluloses. Adsorption on activated carbon removed from the wood extract more high-molecular-mass compounds than smaller ones. The decrease in molecular mass was compensated to some extent in UF, since concentration filtration increased molecular mass significantly.

KW - adsorption

KW - birch

KW - lignin removal

KW - membrane filtration

KW - spruce

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DO - 10.3183/NPPRJ-2015-30-02-p207-214

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