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Quick non-destructi...
Quick non-destructive analysis of condensed lignin by ftir. part 2. pulp samples from acid sulfite cooking
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- Fiskari, Juha, 1967- (författare)
- Mittuniversitetet,Institutionen för kemiteknik,FSCN
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- Derkacheva, Olga (författare)
- St Petersburg State Univ Ind Technol & Design, Mgher Sch Technol & Energy, Str Ivana Chernikh 4, St Petersburg, Russia.
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- Kulomaa, Tuomas (författare)
- Univ Helsinki, Dept Chem, Chem Sci, AI Virtasen Aukio 1, FI-00014 Helsinki, Finland.
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(creator_code:org_t)
- 2021
- 2021
- Engelska.
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Ingår i: Cellulose Chemistry and Technology. - 0576-9787. ; 55:3-4, s. 263-270
- Relaterad länk:
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https://doi.org/10.3...
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visa fler...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Ämnesord
Stäng
- In our previous work, we demonstrated how lignin condensation and precipitation taking place in kraft pulping can be detected and even quantified by Fourier Transform Infrared (FTIR) spectroscopy. Because lignin reactions in acid sulfite pulping are very different from those occurring during kraft cooking, a new analysis method is proposed to rapidly analyze the condensed lignin in acid sulfite pulp. This kind of analysis is useful for sulfite pulp mills to detect the elevated risk of black cook. This paper presents and discusses the novel method using FTIR spectroscopy to rapidly analyze lignin condensation in softwood pulp samples from acid sulfite processes. Several softwood pulp samples from acid sulfite pulping at varying levels of condensation were included in this research. According to the results, FTIR spectroscopy allows indirect quantification of lignin condensation in a difficult matrix of wood constituents, such as in incompletely delignified acid sulfite pulp.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Pappers-, massa- och fiberteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Paper, Pulp and Fiber Technology (hsv//eng)
Nyckelord
- chemical pulp
- lignin condensation
- black cook
- FTIR spectroscopy
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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