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Journal articles
Open Access
The effect of introducing ozone in elemental chlorine free bleaching of eucalyptus kraft pulp, TAPPI JOURNAL November 2013

The effect of introducing ozone in elemental chlorine free bleaching of eucalyptus kraft pulp, TAPPI JOURNAL November 2013

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.

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
Open Access
Hardwood pulping kinetics of bulk and residual phases, TAPPI JOURNAL October 2015

Hardwood pulping kinetics of bulk and residual phases, TAPPI JOURNAL October 2015

Journal articles
Open Access
Quantification of lignin-carbohydrate complexes in hardwood pulps, Part 2: Effects of bleaching chemicals, TAPPI JOURNAL October 2015

Quantification of lignin-carbohydrate complexes in hardwood pulps, Part 2: Effects of bleaching chemicals, TAPPI JOURNAL October 2015

Journal articles
Open Access
Effects of D0-stage temperature, pH, and kappa factor on chl

Effects of D0-stage temperature, pH, and kappa factor on chlorine dioxide decomposition and D0-(EP)-D1 bleaching performance for eucalypt pulps, TAPPI JOURNAL April 2016

Journal articles
Open Access
Improving energy efficiency of existing recovery boilers 15FEB105

Improving energy efficiency of existing recovery boilers, TAPPI JOURNAL February 2015

Journal articles
Open Access
Design of refractory linings for balanced energy efficiency, uptime, and capacity in lime kilns 15FEB141

Design of refractory linings for balanced energy efficiency, uptime, and capacity in lime kilns. TAPPI JOURNAL February 2015

Journal articles
Open Access
Chemical, anatomical, and technology aspects of Eucalyptus benthamii and Eucalyptus dunii for use in an integrated pulp and paper mill 15-Feb-73

Chemical, anatomical, and technology aspects of Eucalyptus benthamii and Eucalyptus dunii for use in an integrated pulp and paper mill, TAPPI JOURNAL February 2015

Journal articles
Open Access
Optimization of a brownstock washing line 15-Feb-83

Optimization of a brownstock washing line, TAPPI JOURNAL February 2015

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