Improving treatment performance of dissolved air flotation system by using ionic liquids as surfactants
Joint Authors
Fadil, Aws Abbas
Muhammad, Sawsan Abd Muslim
Source
Iraqi Journal of Chemical and Petroleum Engineering
Issue
Vol. 16, Issue 2 (30 Jun. 2015), pp.31-37, 7 p.
Publisher
University of Baghdad College of Engineering
Publication Date
2015-06-30
Country of Publication
Iraq
No. of Pages
7
Main Subjects
Topics
Abstract EN
The effect of three ionic liquids viz., 1-hexyl-3-methylimidazolium tetrafluoroborate (ILE), 1-hexyl-3-metylimidazolium hexafluorophosphate (ILF) and 1-octyl-3-methylimidazolium tetrafluoroborate (ILG) when used as surfactants on the performance of dissolved air floatation (DAF) was investigated.
Experiments were conducted at a temperature of 30-35 ºC, 10ppm ferric chloride as coagulant, 50% recycle ratio, pH 8, and 10 minutes treatment time to find oil and grease (OG) and turbidity removal efficiencies at saturation pressure (2-6) bar.
ILs were used at concentration of 50 μl/liter of treated water in two positions in DAF system; the saturation vessel and the treatment tank.
The performance using ILs in the saturation vessel were better than that in treatment tank because ILs reduced the surface tension of water, which lead to an increase in the solubility of air in water and eventually increase the microbubble formation.
The OG removal efficiency using ILG as an efficient surfactant in saturation vessel was higher than that in the treatment tank and higher than other ILs (ILG>ILF>ILE).
The removal efficiency reached about 90% at a saturation pressure of 5 bar, and 85% at 3 bar, which reduces the operation costs.
The treated water oil concentration at 3bar was 9.5 ppm, which meets the Iraqi pre-disposal regulatory limit
American Psychological Association (APA)
Muhammad, Sawsan Abd Muslim& Fadil, Aws Abbas. 2015. Improving treatment performance of dissolved air flotation system by using ionic liquids as surfactants. Iraqi Journal of Chemical and Petroleum Engineering،Vol. 16, no. 2, pp.31-37.
https://search.emarefa.net/detail/BIM-583042
Modern Language Association (MLA)
Muhammad, Sawsan Abd Muslim& Fadil, Aws Abbas. Improving treatment performance of dissolved air flotation system by using ionic liquids as surfactants. Iraqi Journal of Chemical and Petroleum Engineering Vol. 16, no. 2 (Jun. 2015), pp.31-37.
https://search.emarefa.net/detail/BIM-583042
American Medical Association (AMA)
Muhammad, Sawsan Abd Muslim& Fadil, Aws Abbas. Improving treatment performance of dissolved air flotation system by using ionic liquids as surfactants. Iraqi Journal of Chemical and Petroleum Engineering. 2015. Vol. 16, no. 2, pp.31-37.
https://search.emarefa.net/detail/BIM-583042
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 47
Record ID
BIM-583042