Bed Efficiency and Volumetric Mass Transfer Coefficient as Mass Transport Parameters of Displacement Pulp Washing

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F19%3A39914662" target="_blank" >RIV/00216275:25310/19:39914662 - isvavai.cz</a>

Result on the web

<a href="http://www.cellulosechemtechnol.ro/pdf/CCT9-10(2019)/p.929-938.pdf" target="_blank" >http://www.cellulosechemtechnol.ro/pdf/CCT9-10(2019)/p.929-938.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Bed Efficiency and Volumetric Mass Transfer Coefficient as Mass Transport Parameters of Displacement Pulp Washing

Original language description

The long-fibred spruce sulphite and kraft pulps, as well as short-fibred soda pulp cooked from rapeseed straw were subjected to displacement washing under laboratory conditions. Pure water was used as wash liquid, the conductivity of which was described by the permeability. The unmovable pulp bed was characterised by its average effective flow porosity, specific resistance, and equivalent pore diameter. The displacement washing process was divided into two periods. The first period, when spent liquor was displaced from the inter-fibre pores, was described by bed efficiency. The transport of solute in the second period, when leaching prevails, was characterised by the volumetric mass transfer coefficient. The results obtained showed that the bed efficiency increases with increasing Péclet number, however, it decreases with increasing dimensionless dispersion length. The bed efficiency obtained for long-fibred spruce pulps was found to be greater compared to that for short-fibred soda rapeseed pulp. The average volumetric mass transfer coefficient determined for all pulp types had an increasing trend with increasing superficial wash water velocity.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20502 - Paper and wood

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

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

53

Issue of the periodical within the volume

9-10

Country of publishing house

RO - ROMANIA

Number of pages

10

Pages from-to

"929–938"

UT code for WoS article

000497989700011

EID of the result in the Scopus database

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