Phase Inversion in a Batch Liquid – Liquid Stirred System

Abstract

"> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>Phase inversion phenomenon occurs in many industrial processes including liquidliquid dispersions. Some parameters such as energy input or the presence of mineral</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>compounds in the system affect this phenomenon.</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>The aim of this research is to study the speed of rotation or energy input at a range of</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>400 to 800 rpm in a batch liquid-liquid system containing toluene and water. The</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>presence of sodium chloride and magnesium sulphate in the system was also studied.</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>It was shown that the increase of energy input had a more obvious effect on oil in water</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>(O/W ) dispersion at lower values of holdup. It was also shown that the ambivalence</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>(o/w </em><span style="font-family: SymbolMT; font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;">→ <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>w/o) region of the phase inversion curve shifted downward and became wider</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>as a result of the decrease in interfacial tension.</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>It was observed that inorganic salt, used in both single and dual (mixed) shapes,</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>enhanced phase inversion for O/W dispersion. Therefore, the greater the ionic strength</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>of salt, the greater the tendency to phase inversion is.</em></span></span></span></span></span></span></span></span></span></span></span><br style="font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" /></span></span></span>