Selective separation of aromatic hydrocarbons through supported liquid membranes based on ionic liquids |
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| Institution: | 1. National Energy Technology Laboratory, 626 Cochrans Mill Road, Pittsburgh, PA 15236, USA;2. URS Energy and Construction, 626 Cochrans Mill Road, Pittsburgh, PA 15236, USA;3. Oak Ridge Institute for Science and Education, 626 Cochrans Mill Road, Pittsburgh, PA 15236, USA;1. Normandie Université, France;2. Université de Rouen, Laboratoire Polymères, Biopolymères et Surfaces, Bd. Maurice de Broglie, F-76821 Mont Saint Aignan Cedex, France;3. CNRS, UMR 6270 & FR 3038, F-76821 Mont Saint Aignan Cedex, France;4. Institute of Bioorganic Chemistry and Petrochemistry, National Academy of Science of Ukraine, 50, Kharkivske schose, 02160 Kyiv, Ukraine;5. Département de Génie des Procédés, Faculté de Technologie-Université de Béjaia, DZ-6000 Béjaia, Algérie;1. Division of Environment and Sustainability, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China;2. Environmental Engineering Program, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China;3. Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China;4. Guangzhou HKUST Fok Ying Tung Research Institute, S&T Building, Nansha IT Park, Nansha District, Guangzhou, China;5. Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China;1. Normandie Univ, UNIROUEN, INSA ROUEN, CNRS, PBS, 76000 Rouen, France;2. Normandie Univ, UNICAEN, ENSICAEN, CNRS, LCMT, 14000 Caen, France;3. Université Hassan II, Faculté des Sciences Aïn Chock, LIME, 20101 Casablanca, Morocco |
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| Abstract: | Ionic liquids are emerging as alternative solvents for volatile organic compounds traditionally used in liquid–liquid extraction and liquid membrane separation. In this paper, we examine whether room-temperature ionic liquids as a membrane solution can be utilized for hydrocarbon separation by using a supported liquid membrane. Aromatic hydrocarbons, benzene, toluene and p-xylene were successfully transported through the membrane based on the ionic liquids. Although the permeation rates through the membrane based on the ionic liquids were less than those of water, the selectivity of aromatic hydrocarbons was greatly improved. The maximum selectivity to heptane was obtained using benzene in the aromatic permeation and 1-n-butyl-3-methylimidazolium hexafluorophosphate in the liquid membrane phase. |
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