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Journal articles
Magazine articles
Open Access
Continuous tannin extraction by use of screw reactor, TAPPI Journal February 2021

ABSTRACT: A pilot-size screw reactor (extraction unit) was used for tannin extraction of spruce. Yield of the same magnitude or better was obtained when comparing a screw reactor with batch reactors. A longer presoaking time in water seemed to be better than a short one for obtaining higher yield. A higher yield is obtained with lower dry-water ratio, which suggests that the internal diffusion in bark does not determine mass transfer as much as is the case without presoaking of bark. The higher dry-water ratio decreased the yield. The prior soaking of the bark also minimized the mechanical reactor feeding problems (clogging). The benefits of a screw reactor likely are that run time changes for different process conditions are flexible; it simplifies design and construction of an industrial unit for tannin production; and it saves space because of the need for fewer and smaller intermediate storage tanks.

Journal articles
Open Access
Evaluation of a laser-optical resin particle counter, Solutions! & TAPPI JOURNAL, March 2003, Vol. 2(3) (239KB)

Evaluation of a laser-optical resin particle counter, Solutions! & TAPPI JOURNAL, March 2003, Vol. 2(3) (239KB)

Journal articles
Open Access
A systems approach to consistency control and dry stock blend, TAPPI JOURNAL July 1988

A systems approach to consistency control and dry stock blend, TAPPI JOURNAL July 1988

Journal articles
Open Access
Women in the industry-Still rare, women are working hard to progress, TAPPI JOURNAL July 1988

Women in the industry-Still rare, women are working hard to progress, TAPPI JOURNAL July 1988

Journal articles
Open Access
Methodology and approach for understanding and optimizing existing plant thermal cycles, TAPPI JOURNAL July 1988

Methodology and approach for understanding and optimizing existing plant thermal cycles, TAPPI JOURNAL July 1988

Journal articles
Open Access
On-line measurement of wood chip size, TAPPI JOURNAL July 1988

On-line measurement of wood chip size, TAPPI JOURNAL July 1988

Journal articles
Open Access
The role of use-attainability analysis in determining standards for water quality-The Androscoggin River (Maine) case study, TAPPI JOURNAL July 1988

The role of use-attainability analysis in determining standards for water quality-The Androscoggin River (Maine) case study, TAPPI JOURNAL July 1988

Journal articles
Open Access
Optimization of filter washer operation and control, July 1988, TAPPI Journal 88JUN101

Optimization of filter washer operation and control, TAPPI JOURNAL June 1988

Journal articles
Open Access
Equipment and processing update for the blown-film extrusion of linear low-density polyethylene, June 1988, Tappi Journal 88JUN133

Equipment and processing update for the blown-film extrusion of linear low-density polyethylene, TAPPI JOURNAL June 1988

Journal articles
Open Access
Toughened polyester for barrier films, June 1988, TAPPI Journal 88JUN159

Toughened polyester for barrier films, TAPPI JOURNAL June 1988

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