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Effective Separation of Petro Products through Hydrotropy

Authors :
Ramesh, N.
Jayakumar, C.
Nagendra Gandhi, N.
Source :
Chemical Engineering & Technology; January 2009, Vol. 32 Issue: 1 p129-133, 5p
Publication Year :
2009

Abstract

This paper presents a comprehensive study on the effect of hydrotropes such as sodium salicylate, sodium benzoate, and nicotinamide on the separation of a near boiling mixture, o‐/p‐xylene. The influence of a wide range of hydrotrope concentrations (0 to 3.0 mol/L) and different system temperatures (303 to 333 K) on the separation of o‐/p‐xylene were studied. All hydrotropes used in this work showed an enhancement in the percentage extraction of p‐xylene to different degrees. The percentage extraction of p‐xylene from the o‐/p‐xylene mixture increases with an increase in hydrotrope concentration and also with system temperature. A minimum hydrotrope concentration (MHC) was found essential to initiate significant extraction of p‐xylene from the o‐/p‐xylene mixture. The maximum enhancement factor, which is the ratio of the value in the presence and absence of a hydrotrope, was determined for both cases. The Setschenow constant, ks, a measure of the effectiveness of a hydrotrope, was determined for each case.

Details

Language :
English
ISSN :
09307516 and 15214125
Volume :
32
Issue :
1
Database :
Supplemental Index
Journal :
Chemical Engineering & Technology
Publication Type :
Periodical
Accession number :
ejs17632705
Full Text :
https://doi.org/10.1002/ceat.200800328