Construction of a novel bleaching method consisting of manganese-added alkaline oxygen treatment successively followed by acidic manganese treatment

2016 Fiscal Year Final Research Report

• Project/Area Number: 25450237
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Wood science
• Research Institution: The University of Tokyo
• Principal Investigator: Yokoyama Tomoya 東京大学, 大学院農学生命科学研究科(農学部), 准教授 (10359573)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: パルプ化 / 漂白 / 酸素 / マンガン / 木材 / 製紙

Outline of Final Research Achievements

In a chemical pulping process, where lignin is removed from wood and pulp for paper making is prepared, oxygen bleaching plays an important role owing to the environmental benign and economy. It is a big problem, however, that polysaccharides are severely degraded in oxygen bleaching. In this study, the representative of this study primarily proposed a novel bleaching method consisting of successive treatments of manganese-added alkaline oxygen and acidic manganese. The representative was successful to show that the degradation of polysaccharides can be suppressed and lignin can selectively be removed in the novel bleaching method.

Free Research Field

木材化学およびパルプ化化学