Abstract
| Original language | English |
|---|---|
| Title of host publication | Proceedings |
| Subtitle of host publication | 16th International Symposium on Wood, Fiber and Pulping Chemistry, 16th ISWFPC |
| Pages | 1013-1018 |
| Volume | 2 |
| Publication status | Published - 2011 |
| MoE publication type | A4 Article in a conference publication |
| Event | 16th International Symposium on Wood, Fiber and Pulping Chemistry, 16th ISWFPC - Tianjin, China Duration: 8 Jun 2011 → 10 Jun 2011 |
Conference
| Conference | 16th International Symposium on Wood, Fiber and Pulping Chemistry, 16th ISWFPC |
|---|---|
| Abbreviated title | 16th ISWFPC |
| Country | China |
| City | Tianjin |
| Period | 8/06/11 → 10/06/11 |
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Keywords
- Betula verrucosa
- birch sawdust
- birch wood
- cellulose
- hot water extraction
- lignin
- molar mass
- pressurized extraction
- xylan
Cite this
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The effect of the physical form and size of raw materials in pressurized hot water extraction of birch. / Kleen, Marjatta; Liitiä, Tiina; Tehomaa, Mia.
Proceedings: 16th International Symposium on Wood, Fiber and Pulping Chemistry, 16th ISWFPC. Vol. 2 2011. p. 1013-1018.Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
TY - GEN
T1 - The effect of the physical form and size of raw materials in pressurized hot water extraction of birch
AU - Kleen, Marjatta
AU - Liitiä, Tiina
AU - Tehomaa, Mia
PY - 2011
Y1 - 2011
N2 - In order to study how the physical form and size of wood raw material affect the xylan dissolution in hot water extraction (HWE), three different birch materials were used. Industrial chips, compressed chips and sawdust were extracted in a 30 L apparatus in batch mode at 160°C up to 5 h. The total extraction dissolved about 30% of all starting materials, slightly more from the sawdust than from the chips. Higher proportion of the native xylan could be extracted from the sawdust (77%) than from the chips (67%). Higher amounts of polymeric material, consisting mainly of xylan, can be produced from birch sawdust than from birch chips. For sawdust, the extraction time of 30 min or less is enough for production of high-molar-mass xylan, whereas extraction time of 1 h is required for the chips. Compression of the chips is beneficial for the release of higher amounts of high-molar-mass material with Mw about 10 kDa. (10 refs.)
AB - In order to study how the physical form and size of wood raw material affect the xylan dissolution in hot water extraction (HWE), three different birch materials were used. Industrial chips, compressed chips and sawdust were extracted in a 30 L apparatus in batch mode at 160°C up to 5 h. The total extraction dissolved about 30% of all starting materials, slightly more from the sawdust than from the chips. Higher proportion of the native xylan could be extracted from the sawdust (77%) than from the chips (67%). Higher amounts of polymeric material, consisting mainly of xylan, can be produced from birch sawdust than from birch chips. For sawdust, the extraction time of 30 min or less is enough for production of high-molar-mass xylan, whereas extraction time of 1 h is required for the chips. Compression of the chips is beneficial for the release of higher amounts of high-molar-mass material with Mw about 10 kDa. (10 refs.)
KW - Betula verrucosa
KW - birch sawdust
KW - birch wood
KW - cellulose
KW - hot water extraction
KW - lignin
KW - molar mass
KW - pressurized extraction
KW - xylan
M3 - Conference article in proceedings
SN - 978-7-5019-8206-6
VL - 2
SP - 1013
EP - 1018
BT - Proceedings
ER -