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Journal articles
Magazine articles
Partnerships for Technology Challenges, 2018 PEERS

Partnerships for Technology Challenges, 2018 PEERS

Journal articles
Magazine articles
Walter Schalka: RISI’s Four-time Latin American CEO of the Year, Paper360º September/October

Walter Schalka: RISI’s Four-time Latin American CEO of the Year, Paper360º September/October

Journal articles
Magazine articles
7 Water Waste Reduction Strategies to Improve Pump Reliability/Black Liquor Processing, Paper360º November/December 2019

7 Water Waste Reduction Strategies to Improve Pump Reliability/Black Liquor Processing, Paper360º November/December 2019

Journal articles
Magazine articles
Critical parameters for tall oil separation I: The importance of ration of fatty acids to rosin acids, TAPPI Journal September 2019

ABSTRACT: Tall oil is a valuable byproduct in chemical pulping of wood, and its fractions have a large spectrum of applications as chemical precursors, detergents, and fuel. High recovery of tall oil is important for the economic and environmental profile of chemical pulp mills. The purpose of this study was to investigate critical parameters of tall oil separation from black liquor. To investigate this in a controlled way, we developed a model test system using a “synthetic” black liquor (active cooking chemicals OH- and HS- ions), a complete process for soap skimming, and determination of recovered tall oil based on solvent extraction and colorimetric analysis, with good reproducibility. We used the developed system to study the effect of the ratio of fatty acids to rosin acids on tall oil separation. When high amounts of rosin acids were present, tall oil recovery was low, while high content of fatty acids above 60% significantly promoted tall oil separation. Therefore, manipulating the content of fatty acids in black liquor before the soap skimming step can significantly affect the tall oil solubility, and hence its separation. The findings open up chemical ways to improve the tall oil yield.

Journal articles
Magazine articles
He’s Got the Pulp: Schalka Sets Record as LA CEO of the Year, Paper360º September/October 2019

He’s Got the Pulp: Schalka Sets Record as LA CEO of the Year, Paper360º September/October 2019

Journal articles
To Observe and Protect, Frontline Focus, Volume 1, Issue 4

Frontline Focus, May 2005

Journal articles
So What the Heck is a Biorefinery???, Frontline Focus, Volume 3, Issue 3

Frontline Focus, March 2007

Journal articles
Hollow sphere plastic pigment improves high shear rheology o

Hollow sphere plastic pigment improves high shear rheology of higher solids coating formulations, Solutions!, Online Exclusives, May 2004

Journal articles
CONTAINERBOARD: RPA100 pushes the envelopeâ?? and the box, the carton, the video sleeve..., October 2001 SOLUTIONS! [01OCTSO38.pdf]

RPA 100 pushes the envelope — and the box, the carton, the video sleeve…, Solutions!, October 2001, Vol. 84(10)

Journal articles
SSCC Panama City Quantifies Success... One Step at a Time, Solutions!, October 2004, Vol. 87(10)

SSCC panama city quantifies success... one step at a time, Solutions!, October 2004, Vol. 87(10) (724KB)