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Journal articles
Magazine articles
SetPoint: It’s All About the Knowledge, Tissue360º Fall/Winter 2022

SetPoint: It’s All About the Knowledge, Tissue360º Fall/Wint

Journal articles
Magazine articles
Prepare to Expect the Unexpected, Tissue360º Fall/Winter 2022

Prepare to Expect the Unexpected, Tissue360º Fall/Winter 202

Journal articles
Magazine articles
A model black liquor formulation for use in development and evaluation of membranes for concentrating weak black liquor, TAPPI Journal February 2022

ABSTRACT: As part of a larger program to develop robust membranes for concentrating weak black liquor prior to the evaporation step, several commercially available membranes were tested for suitability in this application. Given the variation in kraft black liquor for various wood species, the mill-to-mill variations, and the challenges of obtaining fresh samples, the need became apparent for a synthetic reference black liquor that would allow any membrane developer to test a new prototype membrane and compare the results with others. We present a formulation for a model black liquor (MBL) similar to real kraft black liquor in the composition of the major species that can be formulated from readily available reagents. The MBL was tested with two commercial membranes and resulted in similar levels of lignin retention as the real black liquor. It also showed similar viscosity behavior to real black liquor as a function of solids content.