Publication: Recovery of Surfactant from an Aqueous Solution Using Continuous Multistage Foam Fractionation: Mixed Surfactant System
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Issued Date
2013-01-01
Resource Type
ISSN
15205754
01496395
01496395
Other identifier(s)
2-s2.0-84873616735
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Mahidol University
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SCOPUS
Bibliographic Citation
Separation Science and Technology (Philadelphia). Vol.48, No.5 (2013), 757-765
Suggested Citation
Visarut Rujirawanich, Manutchanok Triroj, Orathai Pornsunthorntawee, Jittipan Chavadej, Sumaeth Chavadej Recovery of Surfactant from an Aqueous Solution Using Continuous Multistage Foam Fractionation: Mixed Surfactant System. Separation Science and Technology (Philadelphia). Vol.48, No.5 (2013), 757-765. doi:10.1080/01496395.2012.710699 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/31496
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Title
Recovery of Surfactant from an Aqueous Solution Using Continuous Multistage Foam Fractionation: Mixed Surfactant System
Abstract
A continuous multistage foam fractionation column with bubble caps was used for surfactant recovery from mixed surfactant solutions containing polyethylene glycol tert-octylphenyl (OPEO10) and cetylpyridinium chloride (CPC) and the effects of air flow rate, foam height, and feed flow rate were investigated under a steady state of conditions. For the mixed surfactant system, the effect of synergism in the surfactant adsorption density was found. For separation efficiency, the total residual factor remained unchanged with an increasing feed molar fraction of OPEO10(α), suggesting that the addition of OPEO10does not increase the total separation efficiency. The residual factor of CPC increased with an increasing molar fraction of OPEO10(α), while the residual factor of OPEO10was lower for the mixed surfactant systems. A competitive removal was found in that the OPEO10can compete with CPC for the bubble surface. The total separation factors and enrichment ratio of mixed surfactant systems were in-between the two single surfactant systems at a long foam residence time and, in contrast, showed antagonism at short foam residence. This is due to the difference in liquid entrainment in foam at long and short foam residence times. © 2013 Copyright Taylor and Francis Group, LLC.