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Conference papers
Stainless steels and specialty alloys for pulp, paper and biomass conversion mills, 2018 PEERS

Stainless steels and specialty alloys for pulp, paper and biomass conversion mills, 2018 PEERS

Conference papers
What Happens When the Fiber Disappears?, 2018 PEERS

What Happens When the Fiber Disappears?, 2018 PEERS

Conference papers
Development and Application of an Object-Oriented Simulation Tool for Kraft Recovery Processes, 2018 PEERS

Development and Application of an Object-Oriented Simulation Tool for Kraft Recovery Processes, 2018 PEERS

Conference papers
Digester Scale Control: Fundamentals and Best Practices for Responding to Process Variations, 2018 PEERS

Digester Scale Control: Fundamentals and Best Practices for Responding to Process Variations, 2018 PEERS

Conference papers
A Review of Green Liquor Scale Formation, 2018 PEERS

A Review of Green Liquor Scale Formation, 2018 PEERS

Conference papers
Practical Methods to Manage Fouling in Concentrator, 2018 PEERS

Practical Methods to Manage Fouling in Concentrator, 2018 PEERS

Conference papers
OPTIMIZATION OF TURBINE GOVERNOR PERFORMANCE FOR IMPROVED PLANT OPERATION, 2018 PEERS

OPTIMIZATION OF TURBINE GOVERNOR PERFORMANCE FOR IMPROVED PLANT OPERATION, 2018 PEERS

Journal articles
Magazine articles
Air and Water Management: Meeting the Ongoing Challenges, Paper360º September/October

Air and Water Management: Meeting the Ongoing Challenges, Paper360º September/October

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
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.

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