Characterization and Removal of Resins from Mixed Tropical Hardwoods Kraft Pulp
Wood resin of mixed tropical hardwoods (MTH) Kraft pulp was removed and characterized. Characterization of wood resin from different pulping stages was achieved accurately using Pyrolytic Gas Chromatographic-Mass Spectrometry (Py-GC-MS). Two types of resin were recognized: (1) small fraction of unre...
| Main Authors: | , , |
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| Format: | Article |
| Language: | fas |
| Published: |
Iranian Scientific Association of Wood and Paper Industries
2011-01-01
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| Series: | Iranian Journal of Wood and Paper Industries |
| Subjects: | |
| Online Access: | http://www.ijwp.ir/article_11415_93319b553c2ae0a858014a3737c78971.pdf |
| Summary: | Wood resin of mixed tropical hardwoods (MTH) Kraft pulp was removed and characterized. Characterization of wood resin from different pulping stages was achieved accurately using Pyrolytic Gas Chromatographic-Mass Spectrometry (Py-GC-MS). Two types of resin were recognized: (1) small fraction of unreactive and inaccessible damar resin which was only found to be concentrated in centri-cleaner reject, (2) large fractions of fatty acids, fatty alcohols, and sterols. These can be removed chemically, e.g. by surfactant addition. Results of experiments showed that addition of surfactant enhances removal of extractives and decreases the chemical consumption during bleaching stage. |
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| ISSN: | 2008-9066 2423-3242 |