Removal of VOCs from groundwater using membrane-assisted solvent extraction

A membrane‐assisted solvent extraction (MASX) system coupled to a membrane‐assisted distillation stripping (MADS) system for use in decontaminating ground‐water is evaluated. Volatile organic compounds (VOCs) in the groundwater are extracted in the MASX unit using a sunflower oil solvent. In the MAD...

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Veröffentlicht in:	AIChE journal 1994-01, Vol.40 (1), p.166-177
Hauptverfasser:	Hutter, Joseph C., Vandegrift, George F., Nuñez, Luis, Redfield, David H.
Format:	Artikel
Sprache:	eng
Schlagworte:	540250 - Environment, Terrestrial- Site Resource & Use Studies- (1990-) Applied sciences CLEANING ENVIRONMENTAL SCIENCES Exact sciences and technology EXTRACTION GROUND WATER Groundwaters HYDROGEN COMPOUNDS LAND RECLAMATION MATTER MEMBRANE TRANSPORT Natural water pollution OXYGEN COMPOUNDS PHYSICAL PROPERTIES Pollution SEPARATION PROCESSES SOLVENT EXTRACTION THERMODYNAMIC PROPERTIES VOCs VOLATILE MATTER Volatile organic compounds WATER Water treatment and pollution
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Beschreibung
Zusammenfassung:	A membrane‐assisted solvent extraction (MASX) system coupled to a membrane‐assisted distillation stripping (MADS) system for use in decontaminating ground‐water is evaluated. Volatile organic compounds (VOCs) in the groundwater are extracted in the MASX unit using a sunflower oil solvent. In the MADS unit, VOCs are stripped from the sunflower oil, which is recycled to the MASX unit. Thermodynamic data for the sunflower oil‐water‐VOCs system were measured. The results were used along with published membrane mass‐transfer data to design MASX and MADS modules.
ISSN:	0001-1541 1547-5905
DOI:	10.1002/aic.690400119