Influence of Bubble Approach Velocity on Coalescence in α-Terpineol and n-Octanol Solutions.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F18%3A00481563" target="_blank" >RIV/67985858:_____/18:00481563 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.5277/ppmp1820" target="_blank" >http://dx.doi.org/10.5277/ppmp1820</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5277/ppmp1820" target="_blank" >10.5277/ppmp1820</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of Bubble Approach Velocity on Coalescence in α-Terpineol and n-Octanol Solutions.

Popis výsledku v původním jazyce

This work presents results of an experimental study of the influence of the approach velocity on the coalescence of bubbles in aqueous solutions of n-octanol and α-terpineol. Experiments were performed in a coalescence cell allowing synchronized growth of a pair of bubbles in a liquid. High speed camera imaging was used to characterized the growth of the bubbles and their interaction in aqueous solution of different concentrations of surfactants. Coalescence efficiency and contact time till coalescence were determined as function of the approach velocity between bubbles and the concentration of surfactant. It was found that, for both surfactants, when the approach velocity between bubbles is higher than ~1 mm/s, the coalescence efficiency is independent of approach velocity and that the contact time is independent of the concentration of surfactant. Below ~1 mm/s, both the coalescence efficiency and the contact time are function of the surfactant concentration. For the higher velocities, the suppression of coalescence occurs at concentrations similar to the concentration of immobilization of the surface of free rising bubbles.

Název v anglickém jazyce

Influence of Bubble Approach Velocity on Coalescence in α-Terpineol and n-Octanol Solutions.

Popis výsledku anglicky

This work presents results of an experimental study of the influence of the approach velocity on the coalescence of bubbles in aqueous solutions of n-octanol and α-terpineol. Experiments were performed in a coalescence cell allowing synchronized growth of a pair of bubbles in a liquid. High speed camera imaging was used to characterized the growth of the bubbles and their interaction in aqueous solution of different concentrations of surfactants. Coalescence efficiency and contact time till coalescence were determined as function of the approach velocity between bubbles and the concentration of surfactant. It was found that, for both surfactants, when the approach velocity between bubbles is higher than ~1 mm/s, the coalescence efficiency is independent of approach velocity and that the contact time is independent of the concentration of surfactant. Below ~1 mm/s, both the coalescence efficiency and the contact time are function of the surfactant concentration. For the higher velocities, the suppression of coalescence occurs at concentrations similar to the concentration of immobilization of the surface of free rising bubbles.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

<a href="/cs/project/GA15-15467S" target="_blank" >GA15-15467S: Rozpad bublin v turbulentním proudění</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Physicochemical Problems of Mineral Processing

ISSN

1643-1049

e-ISSN

—

Svazek periodika

54

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

8

Strana od-do

73-80

Kód UT WoS článku

000414203800008

EID výsledku v databázi Scopus

2-s2.0-85032483536