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Magazine articles
Infrared heat detectors boost productivity, Solutions!, December 2003, Vol. 86(12) (104KB)
Infrared heat detectors boost productivity, Solutions!, December 2003, Vol. 86(12) (104KB)
Magazine articles
Whatâ??s new (and old) in press fabric conditioning, Solutions!, February 2003, Vol. 86(2) (281KB)
What’s new (and old) in press fabric conditioning, Solutions!, February 2003, Vol. 86(2) (281KB)
Magazine articles
Pilot plants bring new opportunities for coating research, Solutions!, February 2003, Vol. 86(2) (396KB)
Pilot plants bring new opportunities for coating research, Solutions!, February 2003, Vol. 86(2) (396KB)
Magazine articles
PanAsia paper braces for the next business cycle, Solutions!, February 2003, Vol. 86(2) (217KB)
PanAsia paper braces for the next business cycle, Solutions!, February 2003, Vol. 86(2) (217KB)
Magazine articles
Formulating coatings for direct print flexo without drying, Solutions!, February 2003, Vol. 86(2) (69KB)
Formulating coatings for direct print flexo without drying, Solutions!, February 2003, Vol. 86(2) (69KB)
Magazine articles
FPAC aims to make an impact on Europe, Solutions!, January 2003, Vol. 86(1) (511KB)
FPAC aims to make an impact on Europe, Solutions!, January 2003, Vol. 86(1) (511KB)
Magazine articles
Mill manager larry newell: "a career, not simply a job", Solutions!, January 2003, Vol. 86(1) (482KB)
Mill manager larry newell: "a career, not simply a job", Solutions!, January 2003, Vol. 86(1) (482KB)
Magazine articles
New growth in research?, Solutions!, January 2003, Vol. 86(1) (448KB)
New growth in research?, Solutions!, January 2003, Vol. 86(1) (448KB)
Journal articles
Magazine articles
Pulp and Paper: Industries with a Bright Future, Paper360º January/February 2019
Pulp and Paper: Industries with a Bright Future, Paper360º January/February 2019
Journal articles
Magazine articles
Kraft pulp bleaching with a P-stage catalyzed by both bicarbonate and TAED, TAPPI Journal July 2019
ABSTRACT: Peroxide bleaching of softwood and hardwood (eucalypt) kraft pulps was performed in solutions of sodium bicarbonate (NaHCO3), sodium carbonate (Na2CO3), and sodium hydroxide (NaOH). The conventional P stage (hydrogen peroxide + sodium hydroxide; H2O2 + NaOH) was the most effective brightening system without an additional activator. However, peroxide activation by bicarbonate anion (HCO3•) was obvious in all cases where NaHCO3 or Na2CO3 was used. When N,N,N’,N’-tetraacetylethylenediamine (TAED) was added to the bleaching sys-tem, Na2CO3 as the alkali source afforded equal or slightly higher bleached brightness compared to NaOH usage for both the softwood and hardwood pulps. This outcome is attributed to simultaneous peroxide activation by HCO3• and TAED. When applied to the eucalypt pulp, the H2O2/Na2CO3/TAED bleaching system also decreased the bright-ness loss due to thermal reversion.