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Photocatalysis: A novel approach to efficient demulsification

Paper ID Volume ID Publish Year Pages File Format Full-Text
49223 46724 2016 4 PDF Available
Title
Photocatalysis: A novel approach to efficient demulsification
Abstract

•Photocatalysis is presented and shifted to a novel process for demulsification.•High demulsification efficiency is directly correlated with photocatalysis.•Demulsification is attributed to photocharge generation and photocatalytic oxidation.•Microscopic images show the existence of the stable interface and dispersed TiO2.•Photo-demulsification has wide applications because of its high efficiency.

Using the theories of photocatalysis and emulsification, photocatalytic demulsification was introduced and studied for developing a direct method for destabilization and separation of oil-in-water emulsion. This was systematically investigated by photocatalysis and quiescent gravitational settling. The results demonstrated that the high demulsification efficiency directly correlated with photocatalysis. The photocatalytic effect and demulsifying enhancement have theoretically and experimentally been displayed and attributed to photocharge generation, redistribution of the self-oriented nano-TiO2, and photocatalytic oxidation of emulsifiers inside oil–water interface film under illumination. The extension of the classical photocatalysis is presented and effectively shifted to a novel process for practical demulsification.

Graphical abstractSchematic diagram of emulsion microstructure and photocatalytic mechanism.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Photocatalysis; Demulsification; Emulsion; Titanium oxide
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 75, 5 February 2016, Pages 83–86
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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