Soda Pulp Cooked From Rapeseed Straw

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F16%3A39901675" target="_blank" >RIV/00216275:25310/16:39901675 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Soda Pulp Cooked From Rapeseed Straw

Original language description

The paper deals with batch soda cooking of pulp from rapeseed straw. The preliminary runs were focused on determination of active alkali charge and liquor-to-straw ratio upon the delignification degree of pulp. For suitable cooking parameters, viz. active alkali charge of 19 %, liquor-to-straw ratio of 5:1, and anthraquinone charge of 0.1 %, the effect of the delignification degree directly proportional to the H-factor upon the total yield, kappa number, and amount of rejects was investigated in the H-factor interval from 800 to 2,800 h. For soda-AQ cooks of straw, stalks, and silique valves, the total pulp yield, kappa number, as well as amount of rejects decreased with increasing H-factor. The greatest total yield and degree of delignification were found for soda-AQ pulp cooked from stalks only. On the contrary, the silique valves gave the lowest total yield. The degree of polymerisation of pulp cooked from straw, stalks, and silique valves increased with increasing H-factor, the greatest values were measured for pulp from stalks. The colour properties of pulp from straw and stalks including brightness found in the interval of 30 to 34 did not differ significantly each other. However, the tensile strength of handsheets made of pulp once dried and repulped was found to be markedly lower in comparison with never dried pulp.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JJ - Other materials

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Cellulose Chemistry and Technology

ISSN

0576-9787

e-ISSN

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Volume of the periodical

50

Issue of the periodical within the volume

5-6

Country of publishing house

RO - ROMANIA

Number of pages

8

Pages from-to

681-688

UT code for WoS article

000386993700021

EID of the result in the Scopus database

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