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Separation of oxygen isotopic water by using a pressure-driven air gap membrane distillation / Jaewoo Kim in Industrial & engineering chemistry research, Vol. 48 N° 11 (Juin 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 11 (Juin 2009) . - pp. 5431–5438 Titre : Separation of oxygen isotopic water by using a pressure-driven air gap membrane distillation Type de document : texte imprimé Auteurs : Jaewoo Kim, Auteur ; Dae-Shik Chang, Auteur ; Yun-Young Choi, Auteur Année de publication : 2009 Article en page(s) : pp. 5431–5438 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Oxygen  isotopic  water  Air  gap  membrane  distillation  Multistage  MD  system  Pressure-driven  AGMD Résumé : Separation of oxygen isotopic water using a newly developed pressure-driven air gap membrane distillation (AGMD) process that is applicable to a multistage MD system was investigated. Pressure-driven (PD) AGMD is distinguished from a currently available AGMD by way of its permeation flux generation. It uses a peristaltic pump to generate the pressure gradient on the membrane interface. Permeation characteristics and isotopic selectivity of four different hydrophobic membranes were evaluated. Permeation fluxes under the various conditions were measured by weighing the collected membrane-permeated water. Permeation fluxes for PD AGMD were higher than those of AGMD as much as 4.2-fold whereas the degree of isotope selectivity was competitive. The oxygen isotopic concentrations of the samples were analyzed by measuring the isotopic ratio H218O/H216O using tunable diode laser absorption spectroscopy and isotopic ratio mass spectrometer. A multistage PD AGMD system was also successfully constructed and operated. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900277r [article] Separation of oxygen isotopic water by using a pressure-driven air gap membrane distillation [texte imprimé] / Jaewoo Kim, Auteur ; Dae-Shik Chang, Auteur ; Yun-Young Choi, Auteur . - 2009 . - pp. 5431–5438. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 11 (Juin 2009) . - pp. 5431–5438 Mots-clés : Oxygen  isotopic  water  Air  gap  membrane  distillation  Multistage  MD  system  Pressure-driven  AGMD Résumé : Separation of oxygen isotopic water using a newly developed pressure-driven air gap membrane distillation (AGMD) process that is applicable to a multistage MD system was investigated. Pressure-driven (PD) AGMD is distinguished from a currently available AGMD by way of its permeation flux generation. It uses a peristaltic pump to generate the pressure gradient on the membrane interface. Permeation characteristics and isotopic selectivity of four different hydrophobic membranes were evaluated. Permeation fluxes under the various conditions were measured by weighing the collected membrane-permeated water. Permeation fluxes for PD AGMD were higher than those of AGMD as much as 4.2-fold whereas the degree of isotope selectivity was competitive. The oxygen isotopic concentrations of the samples were analyzed by measuring the isotopic ratio H218O/H216O using tunable diode laser absorption spectroscopy and isotopic ratio mass spectrometer. A multistage PD AGMD system was also successfully constructed and operated. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900277r