On-line measurement of lignin in wood pulp by color shift of fluorescence
Abstract
Lignin concentrations from wood pulp samples are measured by applying an excitation light at a selected wavelength to the samples in order to cause the lignin to emit fluorescence. A spectral distribution of the fluorescence emission is then determined. The lignin concentration is then calculated based on the spectral distribution signal. The spectral distribution is quantified by either a wavelength centroid method or a band ratio method.
- Inventors:
-
- Washington Township, Stark County, OH
- Liberty Township, Trumbull County, OH
- Issue Date:
- Research Org.:
- BABCOCK & WILCOX CO
- OSTI Identifier:
- 870267
- Patent Number(s):
- 5486915
- Assignee:
- Babcock & Wilcox Company (New Orleans, LA)
- Patent Classifications (CPCs):
-
D - TEXTILES D21 - PAPER-MAKING D21C - PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- FC05-90CE40905
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- on-line; measurement; lignin; wood; pulp; color; shift; fluorescence; concentrations; samples; measured; applying; excitation; light; selected; wavelength; emit; spectral; distribution; emission; determined; concentration; calculated; based; signal; quantified; centroid; method; band; ratio; spectral distribution; selected wavelength; excitation light; fluorescence emission; lignin concentration; wood pulp; calculated based; ratio method; selected wave; /356/162/250/
Citation Formats
Jeffers, Larry A, and Malito, Michael L. On-line measurement of lignin in wood pulp by color shift of fluorescence. United States: N. p., 1996.
Web.
Jeffers, Larry A, & Malito, Michael L. On-line measurement of lignin in wood pulp by color shift of fluorescence. United States.
Jeffers, Larry A, and Malito, Michael L. Mon .
"On-line measurement of lignin in wood pulp by color shift of fluorescence". United States. https://www.osti.gov/servlets/purl/870267.
@article{osti_870267,
title = {On-line measurement of lignin in wood pulp by color shift of fluorescence},
author = {Jeffers, Larry A and Malito, Michael L},
abstractNote = {Lignin concentrations from wood pulp samples are measured by applying an excitation light at a selected wavelength to the samples in order to cause the lignin to emit fluorescence. A spectral distribution of the fluorescence emission is then determined. The lignin concentration is then calculated based on the spectral distribution signal. The spectral distribution is quantified by either a wavelength centroid method or a band ratio method.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 1996},
month = {Mon Jan 01 00:00:00 EST 1996}
}
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Works referenced in this record:
Laser Excited Fluorescence Studies Of Black Liquor
conference, October 1986
- Horvath, J. J.; Semerjian, H. G.
- 1986 Quebec Symposium, SPIE Proceedings
A modified fluorometric method for measurement of lignin sulfonates and its in situ application in natural waters
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A procedure for tracing of kraft mill effluent from an ocean outfall by constituent fluorescence
journal, August 1971
- Baumgartner, D. J.; Feldman, M. H.; Gibbons, C. L.
- Water Research, Vol. 5, Issue 8
Contribution to On-Line Kraft Pulping Control
journal, January 1980
- Capart, R.; Obese-Jecty, K.; Le Cardinal, G.
- IFAC Proceedings Volumes, Vol. 13, Issue 4