publication . Article . Research . 2008

Effect of urea addition on soda pulping of oak wood

Cho, N. -S; Matsumoto, Y.; Cho, H. -Y; soo-jeong shin; Ohga, S.;
  • Published: 28 Feb 2008
Abstract
Many studies have been conducted to find a sulfur-free additive for alkaline pulping liquors that would have an effect similar to that of sulfide in kraft pulping. Some reagents that partially fulfill this role have been found, but they are too expensive to be used in the quantities required to make them effective. As an alternative method to solve air pollution problem and difficulty of pulp bleaching of kraft pulping process, NaOH-Urea pulping was applied. The properties of NaOH-Urea pulp were compared to those of NaOH and kraft pulps. Addition of urea in low alkali charges retarded delignification rate compared to NaOH pulping. But, in high alkali application...
Subjects
Medical Subject Headings: stomatognathic diseasesstomatognathic system
free text keywords: Plant Science, 植物学
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Research . 2008
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publication . Article . Research . 2008

Effect of urea addition on soda pulping of oak wood

Cho, N. -S; Matsumoto, Y.; Cho, H. -Y; soo-jeong shin; Ohga, S.;