响应面分析法优化烟梗氧碱制浆工艺

doi:10.3969/j.issn.0253-2417.2017.01.017

Abstract

Abstract: The alkali-oxygen pulping for tobacco stem were optimized in present study. Based on the results of single factor screening experiments, the impacts of alkali dosage, pulping temperature and holding time on screened pulp yield were analyzed by using the Box-Behnken experimental design and the response surface methodology. The results showed that the pulp yield was significantly affected by the alkali dosage and cooking temperature. The optimum pulping was realized as the tobacco stem was treated by 15.5% alkali dosage (on basis of tobacco stem mass) at 75℃ for 45 min. The screened pulp yield of tobacco stem alkali-oxygen pulping was 29.35% under these conditions, which was closed to the predictive value. By contrasting the microscopic structure of fibers of alkali-oxygen tobacco stem pulp and mechanical one, it was found that the former was well fibrillated, smoother, thinner and longer fibers with tapered ends were observed. In addition, much more non-fibrous cells were involved in the cooked tobacco stem pulp.

Key words: tobacco stem, alkali-oxygen pulping, fiber, response surface analysis

CLC Number:

TQ35

ZHAO Jintao, CHEN Keli, LIU Weijuan, TAO Wenmei. Optimization of Cooking Conditions for Tobacco Stem Pulping Using an Alkali-oxygen Process[J]. Chemistry and Industry of Forest Products, 2017, 37(1): 129-134.

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Optimization of Cooking Conditions for Tobacco Stem Pulping Using an Alkali-oxygen Process

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