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Butane stripping of organic contaminants from water and/or wastewater
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Type
Thesis
Author
Yang, Chun
Supervisor
Teo, Khay Chuan
Abstract
In this study, n-butane was used as extractant to remove various organic pollutants including halogenated hydrocarbons and phenols as well as aromatic compounds from aqueous matrices. High removal efficiencies can be readily achieved for a great number of representative model organic pollutants. Under favorable conditions, the removal efficiencies for most of the hydrophobic pollutants were greater than 90% in a single extraction stage. It is evident that the presence of certain cosolvents in the extractant has a pronounced effect on the overall extraction performance. The removal of phenol and certain substituted phenols are significantly enhanced with the use of a cosolvent, such as n-butyl acetate (25%~) leading to an improvement in the removal efficiencies ranging from 54% to 94%.
Commercial liquid petroleum gas (LPG) was engaged in this study, tentative results showed that it is economical and a practical substitute for pure n-butane. The work also presents the preliminary results in the removal of pollutants from recycled butane and discussion on the removal of residual butane in the treated water.
Commercial liquid petroleum gas (LPG) was engaged in this study, tentative results showed that it is economical and a practical substitute for pure n-butane. The work also presents the preliminary results in the removal of pollutants from recycled butane and discussion on the removal of residual butane in the treated water.
Date Issued
2000
Call Number
TD423 Yan
Date Submitted
2000