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Ekart, Michael Paul 2011-05-07T12:12:25Z 2011-05-07T12:12:25Z 10000-01-01 1992 Investigations of supercritical fluid solutions containing cosolvents are described; in addition, recommendations for future work to improve the understanding of these solutions are made. A new chromatographic technique to measure cosolvent effects rapidly and accurately is detailed. With this technique, a large database of cosolvent effects was acquired for a variety of solutes and cosolvents in ethane. Different types of specific intermolecular interactions, such as hydrogen bonding or charge transfer complex formation, were proposed to explain the observed cosolvent effects. Use of the chromatograph to measure solvent effects and solubilities is also discussed. Techniques to model solutions with chemical interactions are reviewed. A new chemical-physical model is developed and applied to supercritical fluid solutions to describe solute-solvent and solute-cosolvent interactions. Finally, the supercritical fluid extraction of nonionic surfactants is discussed. Experimental results for diverse fluids were used to model a multistage extraction. Made available in DSpace on 2011-05-07T12:12:25Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9236445.pdf: 7398247 bytes, checksum: 0d60354945eb1a268355deda12898420 (MD5) Previous issue date: 1992 Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T14:38:05Z Item is restricted indefinitely. Restriction data tranferred 2014-07-01T11:15:48-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission ETDs are only available to UIUC Users without author permission U of I Only AAI9236445 (UMI)AAI9236445 http://hdl.handle.net/2142/19592 eng Copyright 1992 Ekart, Michael Paul Engineering, Chemical Specific intermolecular interactions for tailoring supercritical fluid solutions text Chemical and Biomolecular Engineering Chemical Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.