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A review of green liquor scale formation, TAPPI Journal October 2018

A review of green liquor scale formation, TAPPI Journal October 2018

Journal articles
Magazine articles
Partnerships for Technology Challenges, 2018 PEERS

Partnerships for Technology Challenges, 2018 PEERS

Journal articles
Magazine articles
Walter Schalka: RISI’s Four-time Latin American CEO of the Year, Paper360º September/October

Walter Schalka: RISI’s Four-time Latin American CEO of the Year, Paper360º September/October

Journal articles
Magazine articles
TAPPI Journal Summaries, Paper360º September/October

TAPPI Journal Summaries, Paper360º September/October

Journal articles
Magazine articles
Pulp Mill Energy Audit Pays Off, Paper360º July/August 2019

Pulp Mill Energy Audit Pays Off, Paper360º July/August 2019

Journal articles
Magazine articles
TAPPI Journal Summaries, Paper360º July/August 2019

TAPPI Journal Summaries, Paper360º July/August 2019

Journal articles
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UPM CEO Jussi Pesonen Named European CEO of the Year, Paper360º March/April 2019

UPM CEO Jussi Pesonen Named European CEO of the Year, Paper360º March/April 2019

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Magazine articles
TAPPI Journal Summaries, Paper360º March/April 2019

TAPPI Journal Summaries, Paper360º March/April 2019

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Magazine articles
Open Access
Prehydrolysis kraft pulping of jute cutting and caddis mixture for rayon production

ABSTRACT: Jute cutting, jute caddis, and cutting-caddis mixtures were prehydrolyzed by varying time and temperature to get about 90% prehydrolyzed yield. At the conditions of 170°C for 60 min of prehydrolysis, the yield for 100% jute cutting was 76.3%, while the same for jute caddis was only 67.9%. But with prehydrolysis at 150°C for 60 min, the yield was 90% for jute cutting, where 49.94% of original pentosan was dissolved and prehydrolysis of jute caddis at 140°C in 60 min yielded 86.4% solid residue. Jute cutting-caddis mixed prehydrolysis was done at 140°C for 30 min and yielded 92% solid residue for 50:50 cutting-caddis mixtures, where pentosan dissolution was only 29%. Prehydrolyzed jute cutting, jute caddis, and cutting-caddis mixtures were subsequently kraft cooked. Pulp yield was only 40.9% for 100% jute cutting prehydrolyzed at 170°C for 60 min, which was 10.9% lower than the prehydrolysis at 140°C. For jute cutting-caddis mixed prehydrolysis at 140°C for 45 min followed by kraft cooking, pulp yield decreased by 3.3% from the 100% cutting to 50% caddis in the mixture, but 75% caddis in the mixture decreased pulp yield by 6.7%. The kappa number 50:50 cutting-caddis mixture was only 11.3. Pulp bleachability improved with increasing jute cutting proportion in the cutting-caddis mixture pulp.

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Facing the Market, Paper360 May/June 2019

Facing the Market, Paper360 May/June 2019

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