Search

Use the search bar or filters below to find any TAPPI product or publication.

Showing 61–70 of 2,000 results (Duration : 0.01 seconds)

Filters

Industry

Topics

Content Type

Publications

Level of Knowledge

Committees

Collections

Journal articles
Open Access
Minimizing baso4 scale formation In ecf bleach plants, TAPPI JOURNAL, March 2003, Vol. 2(3) (119KB)

Minimizing baso4 scale formation In ecf bleach plants, Solutions! & TAPPI JOURNAL, March 2003, Vol. 2(3) (119KB)

Journal articles
Open Access
Enhancing kraft pulping through unconventional, higher sulfide-containing pretreatment liquorsâ??A review, TAPPI JOURNAL, Online Exclusive, March 2003, Vol. 2(3) (347KB)

Enhancing kraft pulping through unconventional, higher sulfide-containing pretreatment liquors–A review, TAPPI JOURNAL, Online Exclusive, March 2003, Vol. 2(3) (347KB)

Journal articles
Open Access
Hexenuronic acid contents of eucalyptus globulus kraft pulps: variation with pulping conditions and effect on ecf bleachability, Solutions! & TAPPI JOURNAL, May 2003, Vol. 2(5) (188KB)

Hexenuronic acid contents of eucalyptus globulus kraft pulps: variation with pulping conditions and effect on ecf bleachability, Solutions! & TAPPI JOURNAL, May 2003, Vol. 2(5) (188KB)

Journal articles
Open Access
Analysis of laboratory beating by fiber settling time frequency distributions, TAPPI JOURNAL, November 2003, Vol. 2(11) (105KB)

Analysis of laboratory beating by fiber settling time frequency distributions, Solutions! & TAPPI JOURNAL, November 2003, Vol. 2(11) (105KB)

Journal articles
Open Access
Current status of the pure oxygen activated sludge process in Canadian mills, TAPPI JOURNAL, November 2003, Vol. 2(11) (124KB)

Current status of the pure oxygen activated sludge process in Canadian mills, Solutions! & TAPPI JOURNAL, November 2003, Vol. 2(11) (124KB)

Journal articles
Open Access
Virtual bleach plants, Part 3: Caustic extraction and peroxide bleaching models, TAPPI JOURNAL, October 2003, Vol. 2(10) (280KB)

Virtual bleach plants, Part 3: Caustic extraction and peroxide bleaching models, Solutions! & TAPPI JOURNAL, October 2003, Vol. 2(10) (280KB)

Journal articles
Open Access
Papermaking properties and morphology of cellulose fiber recovered from municipal solid waste, TAPPI JOURNAL, October 2003, Vol. 2(10) (320KB)

Papermaking properties and morphology of cellulose fiber recovered from municipal solid waste, TAPPI JOURNAL, October 2003, Vol. 2(10) (320KB)

Journal articles
Open Access
Fast determination of anionic groups in different pulp fiber by methylene blue sorption, Solutions! & TAPPI JOURNAL, October 2003, Vol. 2(10) (115KB)

Fast determination of anionic groups in different pulp fiber by methylene blue sorption, Solutions! & TAPPI JOURNAL, October 2003, Vol. 2(10) (115KB)

Journal articles
Magazine articles
Open Access
Impact of dissolved matter in the oxygen delignifcation stag

Impact of dissolved matter in the oxygen delignifcation stage, TAPPI JOURNAL May 2017

Journal articles
Magazine articles
Open Access
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.

Inside this Section