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Journal articles
Open Access
Characterizing Carbonaceous Biochemical Oxygen Demand Load Reductions from Pulp and Paper Mills for Activities Related to Total Maximum Daily Loads, TAPPI JOURNAL January 2009

Characterizing Carbonaceous Biochemical Oxygen Demand Load Reductions from Pulp and Paper Mills for Activities Related to Total Maximum Daily Loads, TAPPI JOURNAL January 2009

Journal articles
Magazine articles
Open Access
Evaluation of soap recovery efficiency from black liquor — analytical tools, TAPPI Journal April 2023

ABSTRACT: Soap skimmings (“soap”) are typically recovered from black liquor in kraft mills that process a high percentage of softwood. In many mills, the recovery of soap is inefficient, negatively impacting performance of evaporators and recovery boilers and resulting in loss of potential revenue. A thorough evaluation of soap recovery performance in a kraft mill requires measurement of soap content in black liquor at various sampling locations, especially around the soap skimmer.The standard laboratory method for evaluating soap content in black liquor is a complex, multi-step process that relies on solvent extraction and titration; most mills send these samples to an outside laboratory for this analysis. In this study, 100 black liquor samples, with a wide range of soap concentrations, were tested by the standard solvent extraction method. After additional dilution, each sample was also tested for surface tension with a bubble pressure tensiometer. The results were found to correlate very closely with the solvent extraction tests results. This alternate method, using surface tension measurements of diluted black liquor samples, produces rapid results and can be easily implemented in most kraft mills, which would facilitate much more frequent in-house evaluations of soap recovery performance.

Journal articles
Open Access
Formation of polychlorinated phenolic compounds during high chlorine dioxide substitution bleaching: part 1: laboratory investigation, TAPPI JOURNAL, August 1994, Vol. 77(8)

Formation of polychlorinated phenolic compounds during high chlorine dioxide substitution bleaching: part 1: laboratory investigation, TAPPI JOURNAL, August 1994, Vol. 77(8)

Journal articles
Open Access
Formation of polychlorinated phenolic compounds during high chlorine dioxide substitution bleaching part 3: mill trial results, TAPPI JOURNAL, August 1994, Vol. 77(8)

Formation of polychlorinated phenolic compounds during high chlorine dioxide substitution bleaching part 3: mill trial results, TAPPI JOURNAL, August 1994, Vol. 77(8)

Journal articles
Open Access
The impact of web oven parameters on 20 degrees print gloss, TAPPI JOURNAL, October 1994, Vol. 77(10)

The impact of web oven parameters on 20 degrees print gloss, TAPPI JOURNAL, October 1994, Vol. 77(10)

Journal articles
Open Access
Bleached fiber from occ, TAPPI JOURNAL, September 1994, Vol. 77(9)

Bleached fiber from occ, TAPPI JOURNAL, September 1994, Vol. 77(9)

Journal articles
Open Access
Stability and chemical resistance of forming fabrics to wet-end boilout conditions, TAPPI JOURNAL, April 1995, Vol. 78(4)

Stability and chemical resistance of forming fabrics to wet-end boilout conditions, TAPPI JOURNAL, April 1995, Vol. 78(4)

Journal articles
Open Access
Thermomechanical pulping of douglas-fir: mill and lab experiences at smurfit newsprint corp., TAPPI JOURNAL, October 1991, Vol. 74(10)

Thermomechanical pulping of douglas-fir: mill and lab experiences at smurfit newsprint corp., TAPPI JOURNAL, October 1991, Vol. 74(10)

Journal articles
Open Access
Effect of fungal pretreatment on strength and optical properties of softwood and hardwood kraft pulps, TAPPI JOURNAL, October 1991, Vol. 74(10)

Effect of fungal pretreatment on strength and optical properties of softwood and hardwood kraft pulps, TAPPI JOURNAL, October 1991, Vol. 74(10)

Journal articles
Open Access
State-of-the-art predictive maintenance programs, TAPPI JOURNAL, August 1992, Vol. 75(8)

State-of-the-art predictive maintenance programs, TAPPI JOURNAL, August 1992, Vol. 75(8)

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