The phrase of Aphron was firstly introduced by Sebba in 1972. This definition distinguishes a kind of bubble with two layers from common bubbles. Because prominent particles are gas in bubbles, production pressure could possess vital role on bubble’s characteristics like micro-bubbles. In order to express importance of Aphron, it can be mention the its diverse applications such as separation minuscule components from Suspensions and solvents, protein recovery, developing of transferring mass in Bio-Reactors, refining industrial effluent, fertilizing soil, drilling mud, etc. moreover it is able to detect other aphron applications by investigating on its structure and properties. The main aim of this study is looking over stability of aphron at high pressure; in order achieve this, procedure of aphron production was investigated by method of drainage curves. Also, the effects of surfactant’s type, surfactant’s concentration, impeller’s diameter, were eva‎luated. It will be suggested that atmosphere pressure has dominant effect on aphron stability during aphron production. On the one hand, the efficiency of production pressure surges by increasing surfactant’s concentration. In terms of impeller’s diameter, increasing dimeter leads to increasing area contact; ultimately, it culminates to boost aphron stability. Since in previous researches suitable time for production had been about 300 seconds, this time was eva‎luated at over atmosphere pressure. Analysis of results demonstrates that increasing pressure during generation could increase stability of aphron by 20 to 30 percent in different conditions.

روح الله هاشمي، محمد اميري

محسن محمدي، حميدرضا شاهوردي