Atmospheric Acetic Acid Pulping of Rice Straw (1)
Atmospheric Acetic Acid Pulping of Rice Straw (1)
复制标题
稻草常压醋酸制浆 (1)
DOI：
10.2524/jtappij.52.408
复制
发表时间：
1998
期刊：
影响因子：
--
通讯作者：
Y. Uraki
中科院分区：
文献类型：
--
作者：
Xuejun Pan;Y. Sano;H. Nakashima;Y. Uraki
In order to make use of rice straw (Oryza sativa L. cv. Kirara 397) as agricultural wastes effectively and to develop a novel pulping method for rice straw without environmental impact, an atmospheric acetic acid pulping was studied. The results indicated that the acetic acid pulping process is a promising method for rice straw. The straw gave screened pulps with satisfactory strength properties when refluxed in 80-90% aqueous AcOH with 0.32% H2SO4 or 0.10% HCl as catalyst for 3 hours. The aqueous AcOH was recovered from the waste liquor and AcOH washings by distillation without troublesome problems, and AcOH lignin and water solubles as sugars were prepared as by-products from the concentrated waste liquor by fractional precipitation with water. The ash contents in screened pulp, fines, water solubles and AcOH lignin were about 18, 24, 18 and 1.5%, respectively. The ash in the pulp and fines consisted mainly of silica which located not in fiber and parenchyma cells but only in epidermal cells as shown by a SEM-EDXA photograph. The silica left in the pulp may function as a filler of paper.
