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A novel approach for determining the reactivity of dissolving pulp based on the COD method
ABSTRACT: A novel approach for determining the reactivity of dissolving pulp according to the chemical oxygen demand (COD) of water has been discussed. First, a sample of dissolving pulp was subjected to mercerization and xanthation in order to obtain dissolved cellulose fractions. Next, the fractions were digested with a testing solution as applied in COD procedures. Finally, the resulting liquid was rapidly tested by ultraviolet-visible spectrophotometry (UV-Vis). By quantifying the absorbance of Cr3+ at a wavelength of 600 nm, the reactivity of dissolving pulp was indirectly calculated. The results measured by this novel COD method correlated well with the most accepted Fock test results with less than 10% relative difference. Meanwhile, this newly developed COD method required less time-consuming procedures as compared to the Fock test.
Journal articles
Magazine articles
Fastmarkets RISI’s 2019 Asian CEO of the Year: Susumu Yajima, Oji Holdings Corporation, Paper360 May/June 2019
Fastmarkets RISI’s 2019 Asian CEO of the Year: Susumu Yajima, Oji Holdings Corporation, Paper360 May/June 2019
Journal articles
Magazine articles
TAPPI Journal Summaries, Paper360 May/June 2019
TAPPI Journal Summaries, Paper360 May/June 2019
Journal articles
Magazine articles
Extending Its Reach, Paper360º, July/August 2017
Extending Its Reach, Paper360º, July/August 2017
Journal articles
Magazine articles
Online Pulp Dirt Count Analysis: Two Case Studies, Paper360º
Online Pulp Dirt Count Analysis: Two Case Studies, Paper360º March/April 2017
Journal articles
Magazine articles
Impact of dissolved matter in the oxygen delignifcation stag
Impact of dissolved matter in the oxygen delignifcation stage, TAPPI JOURNAL May 2017
Journal articles
An improved method for isolating lignin in high yield and purity, Journal of Pulp and Paper Science, July 2003, Vol. 29(7) (273KB)
An improved method for isolating lignin in high yield and purity, Journal of Pulp and Paper Science, July 2003, Vol. 29(7) (273KB)
Journal articles
Lumen loading with calcium carbonate fillers, Journal of Pulp and Paper Science, July 2003, Vol. 29(7) (577KB)
Lumen loading with calcium carbonate fillers, Journal of Pulp and Paper Science, July 2003, Vol. 29(7) (577KB)
Journal articles
Three easy steps for gathering intelligence at trade shows,
Three easy steps for gathering intelligence at trade shows, Solutions!, Online Exclusives, July 2003
Journal articles
Thailand cooks up a big fish, Solutions!, Online Exclusives,
Thailand cooks up a big fish, Solutions!, Online Exclusives, July 2003