Surface sediments formation during auto-hydrolysis and its effects on the benzene-alcohol extractive, absorbability and chemical pulping properties of hydrolyzed acacia wood chips.
Surface sediments formation during auto-hydrolysis and its effects on the benzene-alcohol extractive, absorbability and chemical pulping properties of hydrolyzed acacia wood chips.
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DOI：
10.1016/j.biortech.2019.121604
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发表时间：
2019-10
影响因子：
11.4
通讯作者：
Haiqiang Shi;Miaofang Zhou;Chao Li;X. Sheng;Qian Yang;Na Li;Meihong Niu
中科院分区：
文献类型：
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作者：
Haiqiang Shi;Miaofang Zhou;Chao Li;X. Sheng;Qian Yang;Na Li;Meihong Niu
本研究的目的是研究自水解木屑表面形成的沉积物质。通过分析木屑水解后的表面形貌、苯醇萃取物、吸收性和硫酸盐制浆，探讨其对后续化学制浆的潜在影响。结果表明：自水解木屑表面沉积物呈微球状，且微球数量随处理程度的加重而增加；在p因子为808的条件下，苯醇提取物和木质素含量分别从对照样品的1.36%和16.42%提高到水解木屑的9.42%和47.68%。水解木屑的吸水率在前期先提高（p因子 < 306），后降低。发现木屑水解后表面沉积物对后续硫酸盐化学制浆及最终纸浆的性能有负面影响。
The aim of this work was to study the sedimentary substances formed on the surface of auto-hydrolyzed wood chips. And its potential effect on the subsequent chemical pulping was then investigated by the analysis of surface morphology, benzene-alcohol extractive, absorbability and kraft pulping of wood chips hydrolyzed. The results showed that sediments on the surface of auto-hydrolyzed wood chips were microspheric and the amount of them increased with intensifying the severity of treatment. The benzene-alcohol extractives and lignin content in the extractives increased from 1.36% and 16.42% in the control sample to 9.42% and 47.68% in the hydrolyzed wood chips at the P-factor of 808. The absorbability of hydrolyzed wood chips firstly improved in the early stage (P-factor < 306) and after then decreased. Negative effect of the sediments on the surface of hydrolyzed wood chips was found on the subsequent kraft chemical pulping and the properties of final pulp.