Synergy Between Chemical And Mechanical Actions In The Alkaline Peroxide Pulping Of Oil Palm Empty Fruit Bunch
The synergy between chemical and mechanical actions in an alkaline peroxide pulping (app) system was applied for producing pulp and paper from oil palm empty fruit bunch (efb). In the app, both pulping and brightening process occurring as one process. This process was found appropriately undertak...
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| Format: | Thesis |
| Language: | English |
| Published: |
2014
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| Subjects: | |
| Online Access: | http://eprints.usm.my/63085/ http://eprints.usm.my/63085/1/Pages%20from%2014-00001780540.pdf |
| Summary: | The synergy between chemical and mechanical actions in an alkaline peroxide
pulping (app) system was applied for producing pulp and paper from oil palm
empty fruit bunch (efb). In the app, both pulping and brightening process
occurring as one process. This process was found appropriately undertaken for 40
minutes at 70°c. Softening and brightening of efb was found most effectively done
by synergizing the strength of alkaline peroxide with mechanical fibrillation from
two different andritz sprout bauer refiner blade patterns. Variation of the ap
strength was done by increasing the alkali-to-peroxide ratio from 2:2.5%, 4:5% to a
maximum of 8:10%. Apart from that, ap strength was also increased by applying ap
impregnation in multiple stages. Applying these variations on efb and subjecting
the ap-treated efb to subsequent refining indicated that refining effect could be
intensified by plate d2a505. The effect was so tremendous that variation in chemical
strength was to a certain extent masked/ruled out. The effect of increasing ap
chemical strength was clearly delineated by refining with plate 12716, which
depended more on chemical strength to produce adequate fibrillation. |
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