Soda-anthraquinone pulping of sorghum stalks

Palmina Khristova, Suleiman Gabir
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引用次数: 11

Abstract

Soda-AQ pulping of sorghum stalks increased the rate of delignification and the pulp yield and improved the strength properties compared to soda pulping, but the effect of AQ addition (0·13% on oven-dry raw material) was less pronounced than for tropical hardwoods. The wet-depithing of the stalks contributed considerably to the yield and strength properties, while the alkali consumption and rejects were decreased. Addition of guar gum (0·5% on oven-dry pulp), after beating, as wet-end/dry-strength agent, improved the drainage and strength properties. The soda-AQ pulping makes pulping of sorghum stalks much more attractive and feasible, once the other technical constraints are overcome by employing the recent techniques developed for other agricultural residues.

高粱秸秆的碱-蒽醌制浆
与碱法制浆相比,碱法制浆提高了高粱秸秆的脱木质素率和纸浆得率,并改善了其强度性能,但在烘干原料中添加0.13%的AQ的效果不如热带硬木明显。秸秆湿深处理显著提高了秸秆的屈服性能和强度,降低了碱耗和废品率。在烘浆中加入瓜尔胶(0.5%)作为湿强剂和干强剂,改善了浆料的排水性和强度。一旦采用最近为其他农业残留物开发的技术克服了其他技术限制,钠- aq制浆使高粱秸秆制浆更具吸引力和可行性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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