Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 2173-2183 |
| Number of pages | 11 |
| Journal | BioResources |
| Volume | 5 |
| Issue number | 4 |
| Publication status | Published - 2010 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- Betula
- Kraft pulp
- Fines
- Ozone bleaching
- Hydrogen peroxide
- Chlorine dioxide
- Metal ion
- Bonding
- Brightness stability
- Extractive content
Cite this
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Effect of birch kraft pulp primary fines on bleaching and sheet properties. / Asikainen, Sari (Corresponding Author); Fuhrmann, Agneta; Ranua, Marjatta; Robertsén, Leif.
In: BioResources, Vol. 5, No. 4, 2010, p. 2173-2183.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Effect of birch kraft pulp primary fines on bleaching and sheet properties
AU - Asikainen, Sari
AU - Fuhrmann, Agneta
AU - Ranua, Marjatta
AU - Robertsén, Leif
PY - 2010
Y1 - 2010
N2 - By removing the primary fines from an oxygen-delignified mill birch pulp, a fiber fraction was obtained having low metals content and no extractives. After DEDeD bleaching the fiber fraction had somewhat higher brightness and better brightness stability than the birch pulp containing the primary fines. The fines fraction was enriched with lignin, extractives, xylan, and metals. Bleaching the fines fraction in a QQP sequence did not affect the extractives, whereas a ZeQP sequence clearly reduced the extractives content. In a biorefinery concept, the fines fraction could be utilized as a source of xylan, fatty acids, sterols, and betulinol. Another possibility is to use the fines fraction unbleached or separately bleached as a bonding material in various fiber furnishes.
AB - By removing the primary fines from an oxygen-delignified mill birch pulp, a fiber fraction was obtained having low metals content and no extractives. After DEDeD bleaching the fiber fraction had somewhat higher brightness and better brightness stability than the birch pulp containing the primary fines. The fines fraction was enriched with lignin, extractives, xylan, and metals. Bleaching the fines fraction in a QQP sequence did not affect the extractives, whereas a ZeQP sequence clearly reduced the extractives content. In a biorefinery concept, the fines fraction could be utilized as a source of xylan, fatty acids, sterols, and betulinol. Another possibility is to use the fines fraction unbleached or separately bleached as a bonding material in various fiber furnishes.
KW - Betula
KW - Kraft pulp
KW - Fines
KW - Ozone bleaching
KW - Hydrogen peroxide
KW - Chlorine dioxide
KW - Metal ion
KW - Bonding
KW - Brightness stability
KW - Extractive content
M3 - Article
VL - 5
SP - 2173
EP - 2183
JO - BioResources
JF - BioResources
SN - 1930-2126
IS - 4
ER -