A novel technique to investigate the bubble coalescence in the presence of surfactant (MIBC) and electrolytes (NaCl and CaCl2)

Can Gungoren, Elif Islek, Yasin Baktarhan, Ilgin Kursun Unver, Orhan Ozdemir*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

An efficiency of flotation process is strongly dependent upon the collecting ability of air bubbles. On the other hand, the liquid film formed between two fully or partially mobile air/liquid interfaces being in contact has low stability, which leads to fast liquid drainage. Therefore, when they approach to each other, they tend to coalescence. Therefore, bubble coalescence is usually controlled with frothers in flotation process. Meanwhile, it is known that dissolved ions inhibit bubble coalescence. In this study, the bubble coalescence in the presence of MIBC was determined using a novel technique with a modified bubble-particle attachment timer. Additionally, the effect of NaCl and CaCl2 on bubble behavior was investigated along with surface tension and bubble coalescence time aspects. As a result of study, it is seen that the bubble coalescence time can be successfully determined with a bubble-bubble coalescence timer.

Original languageEnglish
Pages (from-to)1215-1222
Number of pages8
JournalPhysicochemical Problems of Mineral Processing
Volume54
Issue number4
DOIs
Publication statusPublished - 2018
Externally publishedYes

Bibliographical note

Publisher Copyright:
© Wroclaw University of Science and Technology.

Funding

This work is supported by the Research Fund of Istanbul University. Project Number: 32837

FundersFunder number
Istanbul Üniversitesi32837

    Keywords

    • Bubble coalescence time measurement
    • MIBC
    • Salt
    • Surface tension

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