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Ion-Specific Effect in Stability of Foams and Emulsions


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  • Product Description

Stability of foams and emulsions is of great importance in a large number of applications such as mineral processing, food stabilization and oil recovery. In many of these applications, inorganic salts are present in the aqueous phase along with surfactant. These salts strongly influence the adsorption characteristics of ionic surfactants. Stability of aqueous foams and hexane-in-water emulsions prepared with aqueous solutions of an anionic surfactant (viz. SDS) and three 1:1 salts (viz. LiCl, NaCl and CsCl) was studied in this work. The ion-specific behavior of the salts was the main focus of this study. The effectiveness of these salts in defoaming followed the sequence: LiCl > NaCl > CsCl. The same trend was observed in destabilizing the emulsions. The present work demonstrates that the ion-specific effect plays a significant role in the foaming properties of anionic surfactant solutions, size of the droplets in an emulsion, and the rate of destabilization of emulsions. It is possible to control the foam volume and emulsion stability by using different counterions of the same valence.

Product Specifications
SKU :COC79383
AuthorShailesh Varade and Pallab Ghosh
Number of Pages84
Publishing Year2014-07-28T00:00:00.000
Edition1 st
Book TypeChemical engineering
Country of ManufactureIndia
Product BrandLAP LAMBERT Academic Publishing
Product Packaging InfoBox
In The Box1 Piece
Product First Available On ClickOnCare.com2015-10-08 00:00:00