Kinetic Modeling of Flocculation and Coalescence in the System Emulsion of Water-Xylene-Terbutyl Oleyl Glycosides

Harsa Pawignya; Tutuk Djoko Kusworo; Bambang Pramudono

doi:10.9767/bcrec.14.1.2594.60-68

DOI: https://doi.org/10.9767/bcrec.14.1.2594.60-68

Kinetic Modeling of Flocculation and Coalescence in the System Emulsion of Water-Xylene-Terbutyl Oleyl Glycosides

Harsa Pawignya^{1, 2}

, Tutuk Djoko Kusworo³, Bambang Pramudono¹

¹Department of Chemical Engineering, Diponegoro University, Jl. Prof. Soedarto, Kampus Undip Tembalang, Semarang 50239, Indonesia

²Department of Chemical Engineering, University of Pembangunan Nasional "Veteran" Yogyakarta, 55281, Indonesia

³Department of Chemical Engineering, Diponegoro University, Jl. Prof. Soedarto, Kampus Undip Tembalang, Semarang 50239, Indonesia

Received: 2 May 2018; Revised: 17 Sep 2018; Accepted: 18 Sep 2018; Available online: 25 Jan 2019; Published: 15 Apr 2019.

Editor(s): Istadi Istadi

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Abstract

The development of a mathematical model for explaining the kinetics of flocculation and coalescence of emulsion droplets is essential to study the stability of an emulsion system of the kinetics of emulsion stability. Mathematic models was developed from the equation Van Den Tempel by modifying emulsion systems. The emulsion was made by mixing water-xylene and surfactant tert-butyl oleyl glycosides. This research studied the effect of stirrer speed on the value of flocculation rate constant (a) and coalescence rate constant (K). The model identified the emulsion development condition whether controlled by coalescence or flocculation. It was observed that under lower agitation speed (1000 rpm) the emulsion development was controlled by flocculation mechanism, while a faster agitation (2000 rpm or higher) exhibited coalescence controlled mechanism. The results confirmed that the 1^st model was the most appropriate for water-xylene-TBOG emulsion system. From four models after fitting with experimental data, the most suitable model is 4^th model, because it has the smallest error of 2.22 %.

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Keywords: Kinetic; Emulsion; Flocculation; Coalescence

Funding: Universitas Diponegoro

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Section: Original Research Articles

Language : EN

In 2019: BCREC Volume 14 Issue 1 Year 2019 (April 2019)

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