A Comparative Study on Droplet Coalescence in Heavy Crude Oil Emulsions Subjected to Microwave and Ultrasonic Fields

Applying ultrasonic fields to separate water contained in medium-gravity crude oil emulsions and determining crude oil adhesion coefficients

“…Previously published studies on crude oil samples have applied a drop-pair model to assess the displacement of water droplets in crude oil samples tested with microwave and ultrasonic irradiation [65] . In those experiments, the irradiation time in the microwave chamber was 15 s [66] , while in the experiments conducted for this study the ultrasonic irradiation time was between 1 and 5 min. A comparison can be made of the adhesion coefficients calculated from the results of the experiments conducted in microwave systems [65] and the results of the ultrasonic experiments presented here for the same crude oil samples.…”

Effect of the Mixed Oleophilic Fibrous Coalescer Geometry and the Operating Conditions on Oily Wastewater Separation

“…Most kinds of industrial wastewater contain O/W emulsions among their basic contaminants [4]. Various physical methods are used for oil-water separation, such as gravity separation, parallel-plate separation [5], air flotation [6], hydrocyclone separation [7], centrifugal separation [8], filtration [9], micro-and ultrafiltration [10,11], electric field separation [1,12], ultrasonic separation [13,14], and membrane separation [15,16]. These methods can separate free and dispersed oil droplets in wastewater efficiently and economically.…”

Stereoselective Synthesis of P‐Stereogenic N‐Phosphinyl Compounds

“…Most kinds of industrial wastewater contain O/W emulsions among their basic contaminants 4. Various physical methods are used for oil‐water separation, such as gravity separation, parallel‐plate separation 5, air flotation 6, hydrocyclone separation 7, centrifugal separation 8, filtration 9, micro‐ and ultrafiltration 10, 11, electric field separation 1, 12, ultrasonic separation 13, 14, and membrane separation 15, 16. These methods can separate free and dispersed oil droplets in wastewater efficiently and economically.…”