Separation of low volatile organic compounds, phenol and aniline derivatives, from aqueous solution using silicone rubber membrane

✍ Scribed by J. Sawai; N. Ito; T. Minami; M. Kikuchi

• Book ID: 103833892
• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 209 KB
• Volume: 252
• Category: Article
• ISSN: 0376-7388
• DOI: 10.1016/j.memsci.2004.06.018

✦ Synopsis

This paper explores the separation and recovery of 4-substituted phenol and aniline derivatives from aqueous solutions by a permeation and chemical desorption (PCD) method using a silicone rubber membrane. Phenols or anilines in aqueous solution were successfully recovered to aqueous NaOH or HCl solutions, respectively, using a flat silicone membrane apparatus. The penetration rate of 4-substituted phenols or anilines was related to the alkyl chain length. The overall mass transfer coefficient (K OL ) for the phenols and anilines closely correlated with their 1-octanol/water partition coefficient (P OW ), and the correlations could be expressed by the separate formulas with almost equal slopes. A comparison between the method and the PV method was also experimentally performed using a tube-type apparatus, and the removal ratio of the phenols by the method is much greater than that by the pervaporation (PV) method.