Simultaneous Removal of Naphthalene and Sulfur Dioxide using Surfactant
Publication: Journal of Environmental Engineering
Volume 128, Issue 1
Abstract
Anionic surfactant was added during absorption to investigate the solubility of vapor phase naphthalene and in water. Anionic surfactant employed was sodium dodecyl sulfate. Lower than critical micelle concentration (CMC), the apparent solubility and absorption rates of or naphthalene with or without were practically identical to those of pure water. However, higher than CMC, equilibrium or naphthalene apparent solubility increased linearly in proportion to the surfactant concentrations. The solubilization effect of micelles resulted in the increase. Because the micelle solubilization effect was greater than that of the decrease of the mass transfer coefficient, the gas absorption rate increased. When surfactant concentration was 0.1 M, the enrichment factor (EF) value of naphthalene with was 4.54, which was only half of its value without When surfactant concentration was 0.2 M, the EF values increased to 2.24. These empirical findings confirm that to increase the removal efficiency of simultaneous absorption of hydrophobic organic compounds and via a spray or packed tower, an anionic surfactant can be employed.
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Copyright © 2002 American Society of Civil Engineers.
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Received: Oct 31, 2000
Accepted: May 29, 2001
Published online: Jan 1, 2002
Published in print: Jan 2002
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