Determination of diffusivity from steady state mass transfer measurements in continuous dialyzer under conditions of non-zero solution flux through membrane

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F09%3A00008603" target="_blank" >RIV/00216275:25310/09:00008603 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Determination of diffusivity from steady state mass transfer measurements in continuous dialyzer under conditions of non-zero solution flux through membrane

Popis výsledku v původním jazyce

The transport of selected inorganic acids (HCl, H3PO4) through an anion-exchange membrane Neosepta-AFN has been investigated in a continuous dialyzer. Mass transfer rate of the individual acids has been quantified by diffusivity of acid in the membrane,which has been determined from the acid concentrations in the streams entering and leaving the dialyzer. For that purpose, two ordinary differential equations describing the steady-state concentration profiles of acid in both the compartments of the dialyzer have been numerically solved in the connection with an optimizing procedure. In the mathematical model used, mass transfer resistances in liquid films on both sides of the membrane and the flux of solution through the membrane have been taken into account. All the experiments carried at a constant temperature with subsequent data treatment have revealed that diffusivity of hydrochloric acid is about one order of magnitude higher than that of phosphoric acid.

Název v anglickém jazyce

Determination of diffusivity from steady state mass transfer measurements in continuous dialyzer under conditions of non-zero solution flux through membrane

Popis výsledku anglicky

The transport of selected inorganic acids (HCl, H3PO4) through an anion-exchange membrane Neosepta-AFN has been investigated in a continuous dialyzer. Mass transfer rate of the individual acids has been quantified by diffusivity of acid in the membrane,which has been determined from the acid concentrations in the streams entering and leaving the dialyzer. For that purpose, two ordinary differential equations describing the steady-state concentration profiles of acid in both the compartments of the dialyzer have been numerically solved in the connection with an optimizing procedure. In the mathematical model used, mass transfer resistances in liquid films on both sides of the membrane and the flux of solution through the membrane have been taken into account. All the experiments carried at a constant temperature with subsequent data treatment have revealed that diffusivity of hydrochloric acid is about one order of magnitude higher than that of phosphoric acid.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název periodika

Chemical Engineering and Technology

ISSN

0930-7516

e-ISSN

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Svazek periodika

32

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

7

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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