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Full-Text Articles in Forest Sciences
Production Of Dissolving Grade Pulp From Poplar Wood By Ethanol-Water Process, Hüseyi̇n Kirci, Mehmet Akgül
Production Of Dissolving Grade Pulp From Poplar Wood By Ethanol-Water Process, Hüseyi̇n Kirci, Mehmet Akgül
Turkish Journal of Agriculture and Forestry
The possibilities of dissolving grade pulp production from poplar by an ethanol-water process were investigated. The effects of ethanol ratio, cooking temperature and acid catalyst ratio on unbleached, bleached and alkali-purified pulps were studied. It was seen that catalyst ratios exceeding 0.01% caused serious yield and viscosity losses. The results showed that with the catalyst ratio to pulping liquor exceeding 0.01%, pulp yield and viscosity were reduced to an unacceptable level. The best pulping result was obtained at 40% ethanol consistency, 180 ºC pulping temperature and 150 min reaction time without the addition of acid catalyst to the pulping liquor. …