Abstract
| Language | English |
|---|---|
| Pages | 135-141 |
| Journal | Industrial Crops and Products |
| Volume | 129 |
| DOIs | |
| Publication status | Published - Mar 2019 |
| MoE publication type | Not Eligible |
Fingerprint
Keywords
- Anthraquinone
- Galactoglucomannan
- Neutral sulfite pulping
- Sulfite spent liquor
- Softwood
OKM Publication Types
- A1 Refereed journal article
OKM Open Access Status
- 0 Not Open Access
Cite this
}
Biorefining of Scots pine using neutral sodium sulphite pulping : investigation of fibre and spent liquor compositions. / Hanhikoski, Saara (Corresponding Author); Niemelä, Klaus; Vuorinen, Tapani.
In: Industrial Crops and Products, Vol. 129, 03.2019, p. 135-141.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - Biorefining of Scots pine using neutral sodium sulphite pulping
T2 - Industrial Crops and Products
AU - Hanhikoski, Saara
AU - Niemelä, Klaus
AU - Vuorinen, Tapani
PY - 2019/3
Y1 - 2019/3
N2 - Neutral sulphite pulping of softwood as a potential biorefinery was investigated, by producing pulps at two main yield levels (55–65% and 75–85%) under various process conditions and by analysing the composition of the resulting fibre fractions and pulping spent liquors. It was found that both delignification rate and selectivity were enhanced by addition of anthraquinone (AQ 0.1% on o.d. wood) whereas delignification was accelerated by higher temperature (180 °C vs. 170 °C) and initial liquor pH (10 vs. 7). The established conditions preserved significant amount of carbohydrates, especially galactoglucomannan, in the fibres at the selected yield levels. At the yield level of 65%, still over 60% of galactoglucomannan was detected in the pulps whereas 50–70% of lignin was removed. In the spent liquors, lignosulphonates as the principal component represented the possible source of by-product in addition to acetic and formic acids.
AB - Neutral sulphite pulping of softwood as a potential biorefinery was investigated, by producing pulps at two main yield levels (55–65% and 75–85%) under various process conditions and by analysing the composition of the resulting fibre fractions and pulping spent liquors. It was found that both delignification rate and selectivity were enhanced by addition of anthraquinone (AQ 0.1% on o.d. wood) whereas delignification was accelerated by higher temperature (180 °C vs. 170 °C) and initial liquor pH (10 vs. 7). The established conditions preserved significant amount of carbohydrates, especially galactoglucomannan, in the fibres at the selected yield levels. At the yield level of 65%, still over 60% of galactoglucomannan was detected in the pulps whereas 50–70% of lignin was removed. In the spent liquors, lignosulphonates as the principal component represented the possible source of by-product in addition to acetic and formic acids.
KW - Anthraquinone
KW - Galactoglucomannan
KW - Neutral sulfite pulping
KW - Sulfite spent liquor
KW - Softwood
UR - http://www.scopus.com/inward/record.url?scp=85057833692&partnerID=8YFLogxK
U2 - 10.1016/j.indcrop.2018.11.060
DO - 10.1016/j.indcrop.2018.11.060
M3 - Article
VL - 129
SP - 135
EP - 141
JO - Industrial Crops and Products
JF - Industrial Crops and Products
SN - 0926-6690
ER -