Recovery of residual emulsifiable oil from waste water by flotation
作者:
A. M. A. Omar,
Mamdouh S. Mohamed,
Hoda Ibrahim,
期刊:
Lubrication Science
(WILEY Available online 2002)
卷期:
Volume 14,
issue 2
页码: 275-284
ISSN:0954-0075
年代: 2002
DOI:10.1002/ls.3010140211
出版商: John Wiley&Sons, Ltd
关键词: separation;oil;water;flotation;surfactants;emulsion
数据来源: WILEY
摘要:
AbstractA source of waste‐water pollution in machining is the lubricating/cooling fluid used. This study investigates the application of the flotation technique for the removal of emulsifiable oil. Research has been carried out on a process of selective separation of oil using mixtures of anionic/nonionic surfactants as collectors and a cationic surfactant as a de‐emulsifier (coagulant). The behaviour of the mixtures at the aqueous solution‐air interface has been studied, and the critical micelle concentration, efficiency, effectiveness, minimum surface area, and free energy of micellisation determined. The effect of the optimum mole fraction of the mixtures on oil separation has been discussed from the point of view of physical parameters. The selectivity achieved can be explained in terms of surfactant concentration and the structure of the mic
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