Cake filtration in viscoelastic liquids

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F18%3A39913390" target="_blank" >RIV/00216275:25310/18:39913390 - 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

Cake filtration in viscoelastic liquids

Original language description

The paper deals with the modeling of the constant-pressure cake filtration of suspensions in viscoelastic liquids. The filtration equations are presented based on the capillary hybrid model for power law fluid flow and comprising correction functions of the influence of dispersing liquid elasticity. The validity of these equations has been verified experimentally. The tests with suspensions of nearly spherical polystyrene particles Krasten in viscoelastic aqueous solutions of polyacrylamides Kerafloc and Praestol were performed at constant pressure in a laboratory cylindrical filtration unit. The rheological properties of liquids have been measured on a rotational rheometer Mars II and an extensional rheometer Caber 1. By analysing the experimental data, the filtration characteristics have been evaluated. The elastic effects manifest themselves predominantly at the early period of the filtration due to a higher filtration velocity which results in an evidently increased filtration resistance. The satisfactory agreement of the experimental dependences of the cumulative filtration volume on the time of filtration has been achieved when compared to those obtained by the numerical solution of the proposed differential equation of filtration. This confirms that the cake filtration from viscoelastic liquids can be predicted with a satisfactory accuracy, thus making the suggested filtration model applicable in practice.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

20402 - Chemical process engineering

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

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

Name of the periodical

Scientific Papers of the University of Pardubice, Series A, Faculty of Chemical Technology

ISSN

1211-5541

e-ISSN

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Volume of the periodical

24

Issue of the periodical within the volume

November

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

14

Pages from-to

197-210

UT code for WoS article

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EID of the result in the Scopus database

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