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Open Access
Editorial: Research, conferences, and COVID-19, TAPPI Journal May 2021

ABSTRACT: While medical science in fields like virology blazed a path in 2020 in developing vaccines, diagnostic tests, and treatments to combat the COVID-19 pandemic, other scientific research slowed significantly.

Journal articles
Magazine articles
Open Access
Impact and feasibility of a membrane pre-concentration step in kraft recovery, TAPPI Journal May 2021

ABSTRACT: Emerging robust membrane systems can perform the first section of black liquor (BL) concentration by separating clean water from the black liquor stream using only mechanical pressure. By doing so, they can reduce the steam and energy required for BL concentration. Because of the high osmotic pressure of strong BL, a membrane system would not replace evaporators but would operate in series, performing the first section of BL concentration. In this work, we use a multi-effect evaporator (MEE) model to quantify the steam and energy savings associated with installing membrane systems of different sizes. When maintaining a constant BL solids throughput, we find that a pulp mill could reduce steam usage in its evaporators by up to 65%. Alternatively, a membrane system could also serve to increase BL throughput of the recovery train. We find that a membrane system capable of concentrating BL to 25% could double the BL solids throughput of a mill’s evaporators at the same steam usage. We also demonstrate that installing a membrane system before an MEE would minimally affect key operating parameters such as steam pressures and BL solids concentrations in each effect. This indicates that installing a membrane pre-concentration system would be nonintrusive to a mill’s operations.

Journal articles
Open Access
Abitibi consolidated's mill in snowflake, az, converts to 100% recycling, TAPPI JOURNAL, April 2000, Vol. 83(4)

Abitibi consolidated's mill in snowflake, az, converts to 100% recycling, TAPPI JOURNAL, April 2000, Vol. 83(4)

Journal articles
Open Access
A six-year review of the TAPPI research funding program, TAPPI JOURNAL, April 2000, Vol. 83(4)

A six-year review of the TAPPI research funding program, TAPPI JOURNAL, April 2000, Vol. 83(4)

Journal articles
Open Access
Aerodynamic characterization of dryer fabrics in a wind tunnel, TAPPI JOURNAL, April 2000, Vol. 83(4)

Aerodynamic characterization of dryer fabrics in a wind tunnel, TAPPI JOURNAL, April 2000, Vol. 83(4)

Journal articles
Open Access
Performance evaluation of two simple causticizing control systems, TAPPI JOURNAL, April 2000, Vol. 83(4)

Performance evaluation of two simple causticizing control systems, TAPPI JOURNAL, April 2000, Vol. 83(4)

Journal articles
Open Access
Dynamic behavior of a pulp processing and reject refining plant, TAPPI JOURNAL, April 2000, Vol. 83(4)

Dynamic behavior of a pulp processing and reject refining plant, TAPPI JOURNAL, April 2000, Vol. 83(4)

Journal articles
Open Access
Chip size distribution for an ultra-high-yield sulfite process, TAPPI JOURNAL, April 2000, Vol. 83(4)

Chip size distribution for an ultra-high-yield sulfite process, TAPPI JOURNAL, April 2000, Vol. 83(4)

Journal articles
Open Access
Use of new oxidizing agents in a refiner : a route to high brightness pulp, TAPPI JOURNAL, April 2000, Vol. 83(4)

Use of new oxidizing agents in a refiner : a route to high brightness pulp, TAPPI JOURNAL, April 2000, Vol. 83(4)

Journal articles
Open Access
Improved performance tmp bleaching chemicals for closed mill systems, TAPPI JOURNAL, April 2000, Vol. 83(4)

Improved performance tmp bleaching chemicals for closed mill systems, TAPPI JOURNAL, April 2000, Vol. 83(4)

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