6533b86dfe1ef96bd12c9ec8
RESEARCH PRODUCT
A LASER-INDUCED FLUORESCENCE (LIF) METHOD FOR MONITORING OXYGEN–ALKALI DELIGNIFICATION OF SOFTWOOD KRAFT PULP
Jouni TornbergEira LaitinenRaimo Alénsubject
SoftwoodPulp (paper)fungiBiochemistry (medical)Clinical BiochemistryFluorescence spectrometryAnalytical chemistryengineering.materialPulp and paper industrycomplex mixturesBiochemistryFluorescenceAnalytical Chemistrychemistry.chemical_compoundKraft processchemistryElectrochemistryengineeringLigninLaser-induced fluorescenceEffluentSpectroscopydescription
ABSTRACT A laser-induced fluorescence (LIF) method for monitoring the oxygen–alkali delignification of pine (Pinus sylvestris) kraft pulp was tested. The fluorescence intensity of the effluent was found to increase systematically during treatment as the lignin content of the pulp decreased. This emission method, compared, for example, to a UV/Vis absorption method, seems to have potential for large-scale applications. Owing both to the complex chemical nature of the effluent from oxygen–alkali delignification and to the complex nature of the fluorescence method, further work on this method is needed before it can be used for industrial purposes.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-01-12 | Analytical Letters |