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Journal articles
Open Access
Shop Talk: The Smallest Details, TAPPI JOURNAL, January 1999, Vol. 83(5)

Shop Talk: The Smallest Details, TAPPI JOURNAL, January 1999, Vol. 83(5)

Journal articles
Open Access
TAPPI JOURNAL July 1999; Vol. 82; No. 7 - ISO-Torq: The Next Generation of Rotating Consistency Transmitters, TAPPI JOURNAL, July 1999, Vol. 82(7)

TAPPI JOURNAL July 1999; Vol. 82; No. 7 - ISO-Torq: The Next Generation of Rotating Consistency Transmitters, TAPPI JOURNAL, July 1999, Vol. 82(7)

Journal articles
Open Access
Paper curl prediction and control using neural networks, TAPPI JOURNAL, July 1999, Vol. 82(7)

Paper curl prediction and control using neural networks, TAPPI JOURNAL, July 1999, Vol. 82(7)

Journal articles
Open Access
Using wavelets to determine paper formation by light transmission Image analysis, TAPPI JOURNAL, July 1999, Vol. 82(7)

Using wavelets to determine paper formation by light transmission Image analysis, TAPPI JOURNAL, July 1999, Vol. 82(7)

Journal articles
Open Access
Strain-based formulas for stresses in profiled center-wound rolls, TAPPI JOURNAL, July 1999, Vol. 82(7)

Strain-based formulas for stresses in profiled center-wound rolls, TAPPI JOURNAL, July 1999, Vol. 82(7)

Journal articles
Open Access
White water treatment using organically tailored heulandite minerals, TAPPI JOURNAL, July 1999, Vol. 82(7)

White water treatment using organically tailored heulandite minerals, TAPPI JOURNAL, July 1999, Vol. 82(7)

Journal articles
Open Access
Growing the forest in south africa, TAPPI JOURNAL, July 1999, Vol. 82(7)

Growing the forest in south africa, TAPPI JOURNAL, July 1999, Vol. 82(7)

Journal articles
Open Access
Sheet adhesion on press roll materials, TAPPI JOURNAL, June 1999, Vol. 82(6)

Sheet adhesion on press roll materials, TAPPI JOURNAL, June 1999, Vol. 82(6)

Journal articles
Open Access
Water management with mechanical seals, TAPPI JOURNAL, June 1999, Vol. 82(6)

Water management with mechanical seals, TAPPI JOURNAL, June 1999, Vol. 82(6)

Journal articles
Magazine articles
Open Access
Pilot scale black liquor concentration using pressure driven membrane separation, TAPPI Journal April 2023

ABSTRACT: Black liquor concentration using pressure driven membrane separation has long been proposed as a means of achieving energy savings and breaking production bottlenecks. To date, limitations in membrane performance and stability under black liquor process conditions have prevented those promises from being realized out-side of tightly controlled laboratory settings. In this work, we describe the first successful pilot scale field deployments of a membrane system for black liquor concentration. Using a purpose-built system and commercial sized, spiral wound graphene oxide membrane elements, we have logged nearly 6000 h of runtime across deployments to multiple mill sites. We demonstrate concentration of black liquor from 14% to >20% total solids, while generating permeate water comparable in quality to that of evaporator condensate and an 81% reduction in energy consumption relative to evaporation. At a commercial scale, these results translate to $2 M/year in net energy savings for a typical mill, as well as an opportunity to support production increases or mill expansions. These results represent a significant leap forward in the ability of membrane systems to deliver substantial value via black liquor concentration.

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