Dissolving pulp from white press cuttings
| Autor: | M. Sarwar Jahan, M. Mostafizur Rahaman, Rajesh Chandra Deb, M. A. Quaiyyum |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
White (horse) Chemistry Mechanical Engineering General Chemical Engineering 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology Pulp and paper industry 01 natural sciences stomatognathic diseases Cutting stomatognathic system 010608 biotechnology Media Technology General Materials Science 0210 nano-technology Dissolving pulp |
| Zdroj: | April 2016. 15:277-282 |
| ISSN: | 0734-1415 |
| DOI: | 10.32964/tj15.4.277 |
| Popis: | Upgrading of white press cuttings into dissolving pulp was carried out by acidification followed by alkaline extraction. Acid treatment decreased ash content of white press cutting pulp from 11.25% to 0.33% at pH 2. The yield after acidification and screening was 87%. Alkaline extraction removed hemicelluloses and increased α-cellulose content to 92% with viscosity value of 4.3 mPa.s. The overall pulp yield after alkaline extraction was 76.6%. Alkaline extracted liquor contains 9.2% total organics, mostly pentose sugars in the oligomeric form. The produced dissolving pulp can be used for rayon production. |
| Databáze: | OpenAIRE |
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