Pulping & Bleaching

November 5 - 8, 2023 | Atlanta, Georgia

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Pulping & Bleaching


View Pulping & Bleaching Track Schedule


The purpose of the Alkaline Pulping and Bleaching track is to disseminate new developments in the raw materials, production and characterization of pulp, present methods and exemplary data for optimizing the process, and address issues in various unit operations.

Presentations will cover developments in liquor optimization and digester operation, washing control/optimization and defoaming, black liquor concentration and oxidation, oxygen delignification theory and modeling, peracetate, ozone and chlorine dioxide bleaching chemistry and optimization. Presentations addressing new detectors and applications are included.

Learning outcomes: After successfully completing the sessions in this track, participants will be able to go back to their workplace and:

Demonstration of learning outcomes: After attending the alkaline pulping and bleaching presentation sessions attendees will have a better understanding of how to implement:


Pulping & Bleaching Track Schedule

(Program is subject to change.)


Monday, October 31
3:30pm - 5:30pm

Session 4: Bleach Plant Benchmarking and Optimization

Optimizing the bleaching process can be complicated. Challenges and benchmarking will be discussed.


Session Chair: Dan Nicholson, Solenis, LLC


Using Bleaching Stage Models for Benchmarking Softwood ECF Bleach Plants

Brian N. Brogdon, Future Bridge Consulting Services, LLC

You Have Several Bleaching Stages, Why Don't You Use Them?

James Goldman, BTG

Bleach Plant Benchmarking and the Sequence Kappa Factor Flaw

Tom Mullen, Process Innovations, LLC
 Tuesday, November 1


10:30am - 12:30pm

Session 7: Efficient Washing and Black Liquor Management

Good washing is important and can be improved by better measurements and chemical additives. Removing some of the water from the weak BL filtrate could allow it to be recycled, increasing water efficiency even more.


   Session Chair: Mathias Lindström, International Paper


DD-Washer Performance Optimization Using Latest Measurement Technology

Riku Kopra, South-Eastern Finland University of Applied Sciences, Fiber Laboratory

Understand Chemi-Washer Washing Operation to Enhance Efficiency and Reduce Cost

Michael Wang, Solenis

Successful Field Testing of Black Liquor Reverse Osmosis Modules

Brent Keller, Via Separations

Silicone Applications in Pulp and Paper

Lingrong Gu, Wacker Chemie AG
1:30pm - 3:30pm

Session 16: Oxygen Stages and Liquor Oxidation

The mill oxygen delignification stage is continuously being optimized. New measurement techniques are allowing better understanding of fundamental mass transfer effects in real systems. 


Session Chair: Ashok Ghosh, WestRock


Oxygen Delignification Model Using Vanska, van Heiningen Equation

Tom Mullen, Process Innovations, LLC

Modeling of Real Oxygen Delignification Processes

Jari Käyhkö, South-Eastern Finland University of Applied Sciences
3:30pm - 5:30pm

Session 19: Developments in Bleaching

Bleaching processes can be improved by better control, alternative bleaching stages, and potential new bleaching agents.

    Session Chair: Tom Mullen, Process Innovations, LLC  

Chorine Dioxide Generator Liquor Composition Control Using FITNIR Online-Benefits and Process Improvements

TBA, Evergreen Packaging, Pactiv Evergreen

Practical Brightening for Low-pH Kraft Pulp Through In Situ Creation of Peracetic Acid from Peracetate

Howard Kaplan, Kaplan Consulting, LLC

Some Preliminary Results on Oxygen Addition to D-State Bleaching (D/O)

Raymond C. Francis, SUNY ESF

Z-ECF and Z-TCF of Softwood Kraft Pulp Bleaching

Alexis Metais, Xylem
Wednesday, November 2
8:30am - 10:00am

Session 24: Solving Problems for Better Optimization

Classic pulping challenges are examined for improved methods and optimization.


Session Chair: Franklin Zambrano, Solenis

      Comparison of White Liquor Measurement Gauge Studies-Titration versus Benchtop Near-Infrared Analyzers   Michael AguilarWestRock

 De-Resinators and Yield Improvement - Why is it so Hard

 Delos Boardman, Retired

Kraft Lignin Production at West Fraser’s Hinton Mill Using the LignoForceTM System

Michael Paleologou, FPInnovations
10:30am - 12:00pm

Session 25: PFAS Issues Facing the Industry Panel Discussion

PFAS are a chemical class of over 10,000 individual compounds manufactured for industrial and commercial applications since the late 1940’s.  The regulatory and technical landscape surrounding PFAS is continually expanding with USEPA and state regulatory entities developing new regulations and guidance seemingly monthly.  Currently, the individual states in which have pulp and paper operations are in various stages of development of their regulatory framework.  Analytical methodology exists to analyze various environmental matrices (soil, water, etc.) for individual PFAS compounds at the parts per trillion concentrations which meet the regulatory criteria for most media but is not sensitive enough to meet some of the most recently developed draft health advisory levels for perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) in drinking water.  In addition, popular press and social media is replete with narratives on the risks of “forever chemicals” with a focus on PFAS compounds.  In this session there will three speakers discussing three critical aspects of PFAS as it pertains to the Pulp and Paper Industry.


Session Chair: Dan Curry, TRC



  • Cathy Swanson, Purolite, an Ecolab Company
  • Elizabeth Denly, TRC
  • Giffe Johnson, NCASI