Examples of 'kappa number' in a sentence
Meaning of "kappa number"
Kappa number is a test used in the pulp and paper industry to measure the lignin content in wood pulp
How to use "kappa number" in a sentence
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kappa number
The kappa number is determined on the treated pulp.
This phenomenon was emphasized at higher kappa number.
The kappa number represents a measure of residual lignin content.
The delignification was measured as change in kappa number after the caustic extraction stage.
The kappa number and the brightness were at the same levels.
The kraft pulping performance was analyzed based on screened yield and kappa number.
The kappa number and viscosity were defined of the incubated pulps.
The delignification was measured as change in Kappa number.
The kappa number may be adjusted by the amount of active chlorine charge used.
The degree of delignification is measured by determination of the Kappa number.
Manual measurement of kappa number using the standard sodium permanganate titration method takes several hours.
The process yields a quality cellulosic fiber having a low Kappa number.
The Kappa number of the three sheets obtained is measured.
The use of the catalyst thus results in a further reduction of the Kappa number.
Pulps with higher Kappa number are shown to be more heterogeneous.
See also
Advantageously, the cellulose fiber is digested to a target kappa number before bleaching.
The Kappa number is an indication of the lignin content or bleachability of pulp.
In some embodiments modified kraft fiber has a kappa number of less than about 2.
A Kappa number corresponds directly to the amount of lignin remaining in the pulp.
At the start of the bleaching, the pulp shall have a low kappa number.
Still the Kappa number and the brightness remained practically unchanged.
Preferably, the pulp subjected to the final stage will have a kappa number not exceeding 3.
A lower Kappa number is desirable as it indicates that a smaller amount of lignin is present.
FIG . 6 is a graph showing experimental Kappa number of nanocellulose versus fractionation time.
The kappa number of the pulp before treatment with hydrogen peroxide advantageously does not exceed 17.
The relationship between H-factor and kappa number was determined with precooks.
In addition, kappa number and total yield were measured from the cooked pulps.
Therefore, this ratio can be used for the Kappa number of individual fibres.
However, the kappa number remains somewhat higher.
Any oxidizable matter present, lignin or whatever, would contribute to raising the Kappa number.
There are a few commercial Kappa Number Analyzers available for measuring the Kappa number in a pulp.
The present technique, therefore, provides a process for determining the uniformity of Kappa number in a pulp.
A method of determining kappa number or lignin content of a pulp comprising,.
This two-step process provided a brightness increase and reduction in Kappa Number.
In some embodiments, the kappa number increases after oxidation of the cellulose fiber.
The mixture was proportioned at 2.0 x the kappa number after the pulping.
As a result, the kappa number stays much too high for the above requirements.
Table 13 below shows the role of the substituents on the kappa number obtained.
A greater kappa number reduction implies higher charge, calculated per reduced kappa number unit.
The dosage of the mixture was 1.4 x kappa number of the pulp after enzyme treatment.
A kappa number less than two ;.
Typically with a Superbatch process, pulp is cooked to a kappa number of 20 or less.
Table 3 shows the Kappa number for various digester aids at two different additive dose rates.
The washed pulp ( washed cellulose-rich solids ) was analyzed for Kappa number and degree of polymerization.
Generally, as the kappa number increases, more caustic is added.
Figure 10 is a graph of chlorate formed versus D ₁ charge and CE kappa number for conventional bleaching ;.
However, the kappa number remains higher, which may cause after-yellowing.
After washing, the oxygen-xylanase-treated pulp had the following properties, Kappa Number.
Glucose yield as a plot of Kappa number ( residual lignin ) is presented in Figure 3.
Kappa number of less than or equal to 15, advantageously less than or equal to 10.
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