TOTALLY CHLORINE-FREE BLEACHING OF SODA RAPESEED PULP

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F18%3A39912909" target="_blank" >RIV/00216275:25310/18:39912909 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.17423/afx.2018.60.2.11" target="_blank" >http://dx.doi.org/10.17423/afx.2018.60.2.11</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17423/afx.2018.60.2.11" target="_blank" >10.17423/afx.2018.60.2.11</a>

Jazyk výsledku

angličtina

Název v původním jazyce

TOTALLY CHLORINE-FREE BLEACHING OF SODA RAPESEED PULP

Popis výsledku v původním jazyce

Soda pulp cooked from rapeseed straw was subjected to the totally chlorine-free bleaching using hydrogen peroxide and peractic acid as bleaching agents. The five-stage bleaching sequence, Q1Q2EPPaaP, containing two chelation stages, as well as four-stage sequence, AEPPaaP, with an acidic stage were applied to investigate the properties of bleached soda pulp, namely its brightness and tensile strength. For comparison, once-dried kraft softwood pulp, as well as never-dried oxygen-predelignified kraft softwood pulp and sulphite spruce pulp were bleached under the same process conditions. The results obtained showed that totally chlorine-free bleaching did not bring the sufficient bleaching effect for soda rapeseed pulp. The brightness of 54 % ISO achieved for the AEPPaaP bleaching sequence was lower comparing to that for kraft and sulphite pulps.

Název v anglickém jazyce

TOTALLY CHLORINE-FREE BLEACHING OF SODA RAPESEED PULP

Popis výsledku anglicky

Soda pulp cooked from rapeseed straw was subjected to the totally chlorine-free bleaching using hydrogen peroxide and peractic acid as bleaching agents. The five-stage bleaching sequence, Q1Q2EPPaaP, containing two chelation stages, as well as four-stage sequence, AEPPaaP, with an acidic stage were applied to investigate the properties of bleached soda pulp, namely its brightness and tensile strength. For comparison, once-dried kraft softwood pulp, as well as never-dried oxygen-predelignified kraft softwood pulp and sulphite spruce pulp were bleached under the same process conditions. The results obtained showed that totally chlorine-free bleaching did not bring the sufficient bleaching effect for soda rapeseed pulp. The brightness of 54 % ISO achieved for the AEPPaaP bleaching sequence was lower comparing to that for kraft and sulphite pulps.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20502 - Paper and wood

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Acta Facultatis Xylologiae Zvolen

ISSN

1336-3824

e-ISSN

—

Svazek periodika

60

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

8

Strana od-do

117-124

Kód UT WoS článku

000448690700011

EID výsledku v databázi Scopus

2-s2.0-85055942930