Method for rapidly determining a pulp kappa number using spectrophotometry

Chai, Xin-Sheng; Zhu, Jun Yong

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A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
A23 - foods or foodstuffs
A24 - tobacco
A41 - wearing apparel
A42 - headwear
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A44 - haberdashery
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A47 - furniture
A61 - medical or veterinary science
A62 - life-saving
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B - performing operations
B01 - physical or chemical processes or apparatus in general
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B03 - separation of solid materials using liquids or using pneumatic tables or jigs
B04 - centrifugal apparatus or machines for carrying-out physical or chemical processes
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D02 - yarns
D03 - weaving
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D05 - sewing
D06 - treatment of textiles or the like
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D10 - indexing scheme associated with sublasses of section d, relating to textiles
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Title: Method for rapidly determining a pulp kappa number using spectrophotometry

Abstract

A system and method for rapidly determining the pulp kappa number through direct measurement of the potassium permanganate concentration in a pulp-permanganate solution using spectrophotometry. Specifically, the present invention uses strong acidification to carry out the pulp-permanganate oxidation reaction in the pulp-permanganate solution to prevent the precipitation of manganese dioxide (MnO.sub.2). Consequently, spectral interference from the precipitated MnO.sub.2 is eliminated and the oxidation reaction becomes dominant. The spectral intensity of the oxidation reaction is then analyzed to determine the pulp kappa number.

Inventors:

Chai, Xin-Sheng ^[1]; Zhu, Jun Yong ^[2]

Atlanta, GA
Marietta, GA

Issue Date:: Tue Jan 01 00:00:00 EST 2002

Research Org.:: Inst. of Paper Science and Technology, Atlanta, GA (US)

OSTI Identifier:: 874855

Patent Number(s):: 6475339

Assignee:: lnstitute of Paper Science and Technology, Inc (Atlanta, GA)

Patent Classifications (CPCs):: D - TEXTILES D21 - PAPER-MAKING D21C - PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS

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D - TEXTILES D21 - PAPER-MAKING D21C - PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS
D21C3/228 - {Automation of the pulping processes}

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DOE Contract Number:: FC07-96ID13438

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: method; rapidly; determining; pulp; kappa; spectrophotometry; direct; measurement; potassium; permanganate; concentration; pulp-permanganate; solution; specifically; strong; acidification; carry; oxidation; reaction; prevent; precipitation; manganese; dioxide; mnosub2; consequently; spectral; interference; precipitated; eliminated; dominant; intensity; analyzed; determine; oxidation reaction; direct measurement; /162/356/

Citation Formats


                    Chai, Xin-Sheng, and Zhu, Jun Yong. Method for rapidly determining a pulp kappa number using spectrophotometry.  United States: N. p., 2002. 
        Web.

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                    Chai, Xin-Sheng, & Zhu, Jun Yong. Method for rapidly determining a pulp kappa number using spectrophotometry.  United States.

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                    Chai, Xin-Sheng, and Zhu, Jun Yong. Tue .  
        "Method for rapidly determining a pulp kappa number using spectrophotometry".  United States.  https://www.osti.gov/servlets/purl/874855.

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@article{osti_874855,

  title        = {Method for rapidly determining a pulp kappa number using spectrophotometry},

  author       = {Chai, Xin-Sheng and Zhu, Jun Yong},

  abstractNote = {A system and method for rapidly determining the pulp kappa number through direct measurement of the potassium permanganate concentration in a pulp-permanganate solution using spectrophotometry. Specifically, the present invention uses strong acidification to carry out the pulp-permanganate oxidation reaction in the pulp-permanganate solution to prevent the precipitation of manganese dioxide (MnO.sub.2). Consequently, spectral interference from the precipitated MnO.sub.2 is eliminated and the oxidation reaction becomes dominant. The spectral intensity of the oxidation reaction is then analyzed to determine the pulp kappa number.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Jan 01 00:00:00 EST 2002},

  month        = {Tue Jan 01 00:00:00 EST 2002}

}

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Works referenced in this record:

Kinetics and mechanism of kappa number determination
journal, May 1998

Li, Jiebing; Gellerstedt, Göran
Nordic Pulp & Paper Research Journal, Vol. 13, Issue 2
https://doi.org/10.3183/npprj-1998-13-02-p147-152

On the structural significance of the kappa number measurement
journal, May 1998

Li, Jiebing; Gellerstedt, Göran
Nordic Pulp & Paper Research Journal, Vol. 13, Issue 2
https://doi.org/10.3183/npprj-1998-13-02-p153-158

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Similar Records

Title: Method for rapidly determining a pulp kappa number using spectrophotometry

Abstract

Citation Formats

Kinetics and mechanism of kappa number determination journal, May 1998

On the structural significance of the kappa number measurement journal, May 1998

Kinetics and mechanism of kappa number determination
journal, May 1998

On the structural significance of the kappa number measurement
journal, May 1998