The effect of surface-additives on bubble coalescence in aqueous media

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F99%3A00009006" target="_blank" >RIV/60461373:22340/99:00009006 - 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

The effect of surface-additives on bubble coalescence in aqueous media

Popis výsledku v původním jazyce

An experimental study has been aimed at examining the coalescence phenomena in aqueous solutions of aliphatic alcohols and electrolytes and at determining the efect of these surface-active compounds on bubble coalescence in viscous aqueous media with Newtonian and non-Newtonian behaviour, represented by aqueous solutions of 50 and 60 wt%, saccharose, and 0.2 and 0.5 wt%, xanthan, respectively. Bubble coalescence in aqueous solutions of alcohols and electrolytes was significantly hindered by increasing solute concentration and the coalescence percentage t exhibited sharp transition from 100% of bubble pairs coalescing to very low values over a narrow concentration range. Transition concentrations of respective surface-active additives, characterizing suppression of coalescence in their aqueous solutions, were successfully correlated as a function of the surface tension gradient, with exponent values 1/3 and 1/4 (or 1/6) for solutions of alcohols and electrolytes, respectively. The inhib

Název v anglickém jazyce

The effect of surface-additives on bubble coalescence in aqueous media

Popis výsledku anglicky

An experimental study has been aimed at examining the coalescence phenomena in aqueous solutions of aliphatic alcohols and electrolytes and at determining the efect of these surface-active compounds on bubble coalescence in viscous aqueous media with Newtonian and non-Newtonian behaviour, represented by aqueous solutions of 50 and 60 wt%, saccharose, and 0.2 and 0.5 wt%, xanthan, respectively. Bubble coalescence in aqueous solutions of alcohols and electrolytes was significantly hindered by increasing solute concentration and the coalescence percentage t exhibited sharp transition from 100% of bubble pairs coalescing to very low values over a narrow concentration range. Transition concentrations of respective surface-active additives, characterizing suppression of coalescence in their aqueous solutions, were successfully correlated as a function of the surface tension gradient, with exponent values 1/3 and 1/4 (or 1/6) for solutions of alcohols and electrolytes, respectively. The inhib

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

1999

Kód důvěrnosti údajů

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

Název periodika

Chemical Engineering Science

ISSN

0009-2509

e-ISSN

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Svazek periodika

54

Číslo periodika v rámci svazku

21

Stát vydavatele periodika

BE - Belgické království

Počet stran výsledku

12

Strana od-do

4757-4766

Kód UT WoS článku

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EID výsledku v databázi Scopus

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