Preparation of hexenuronic acid to estimate the discharge of AOX during ClO2 bleaching

被引：0

作者：

Magara, Kengo ^{[1
]}

Ikeda, Tsutomu ^{[1
]}

Hosoya, Shuji ^{[1
]}

Shibata, Izumi ^{[2
]}

Isogai, Akira ^{[2
]}

机构：

[1] Forestry and Forest Products Research Institute, Tsukuba, Ibaraki 305-8687

[2] Graduate School of Agricultural and Life Sciences, University of Tokyo

来源：

Kami Pa Gikyoshi/Japan Tappi Journal | 2009年 / 63卷 / 04期

关键词：

4-O-methylglucuronoxylan; Alkali-cooking; AOX; Cellouronate; Chlorine dioxide;

D O I：

10.2524/jtappij.63.417

中图分类号：

学科分类号：

摘要：

In this study, we investigated the applicability of 4-O- methylglucuronoxylan (xylan) and cellouronate as raw materials for preparing hexenuronic acid groups by alkali-cooking. We also investigated the generation of AOX during chlorine dioxide (ClO2) treatment of the prepared hexenuronic acids. Based on Teleman's procedure, suitable conditions for alkali-cooking were established for xylan and cellouronate. In the ClO 2 treatment, xylan or cellouronate cooked in alkali solution generated AOX in different amounts, which might depend on the solubility of the polymer in acidic solution. In the ClO2 treatment, xylan separated from wood hemicellulose must be removed due to the influence of lignin on AOX generation. Hence, hexenuronic acid groups in alkali-cooked cellouronate can be applied as a standard compound for estimating of the discharge of AOX during ClO2 bleaching.

引用

页码：55 / 63

页数：8

共 19 条

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