Steady states in membrane distillation: influence of membrane wetting

Peña, Luis Manuel; Zárate, José M. Ortiz de; Mengual, J.I.

doi:10.1039/ft9938904333

Cited by 40 publications

(15 citation statements)

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“…As a separation tool, pervaporation is often used for the separation of organic/organic mixtures and organic/water mixtures; however, VMD is most often used for the removal of volatile organic compounds from dilute aqueous solutions because of the risk of pore wetting (Peña et al, 1997). In fact the possibility of membrane wetting in VMD is higher than that in the other membrane distillation (MD) configurations (Lawson and Lloyd, 1997; Mengual and Peña, 1997), that is, direct contact membrane distillation (DCMD), sweeping gas membrane distillation (SGMD), and air gap membrane distillation (AGMD).…”

Section: Introductionmentioning

confidence: 99%

Pervaporation and vacuum membrane distillation processes: Modeling and experiments

2004

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Section: Introductionmentioning

confidence: 99%

Pervaporation and vacuum membrane distillation processes: Modeling and experiments

2004

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“…ing the so-called ''liquid entry pressure of water LEP '' is w Ž . applied Sarti et al, 1985;Pena et al, 1993 . In the absencẽ of such a pressure difference, a liquid᎐vapor interface is formed on either side of the membrane pores. If a temperature difference is maintained through the membrane, a water-vapor pressure difference appears.…”

Section: Introductionmentioning

confidence: 99%

Thermal boundary layers in sweeping gas membrane distillation processes

2002

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“…Experimental investigations demonstrate that, once a membrane is wetted by the penetrating liquid, a decrease in hydrostatic pressure is not able to restore the original unwetted condition. 80 This phenomenon is qualitatively illustrated in Fig. 3.20.…”

Section: Breakthrough Pressurementioning

confidence: 74%

Membrane Materials

2015

Membrane-Assisted Crystallization Technology

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The membrane itself represents the core of a membrane crystallizer. Although a quite large variety of membranes exists (depending on their different morphology, topology, mass and energy transport properties, selectivity, and separation mechanism), microporous hydrophobic membranes are usually required for membrane crystallization (MCr) operations. However, in principle, any surface is suitable for promoting a controlled heterogeneous nucleation phenomenon. According to the most traditional classification, synthetic membranes are divided into organic (polymeric) and inorganic membranes; within the same class, different properties are originated by dissimilar raw materials or preparation methods.At present, due to their easy processability on industrial scale and possibility to properly modulate their physico-chemical properties, polymeric membranes have attracted much more interest than inorganic ones. The most significant exception probably concerns the use of ceramic membranes in high-temperature separation and emulsification processes. Membrane PolymersThe selection of a polymeric material is preliminarily driven by the necessity to achieve a high chemical and thermal stability. Moreover, preparation methods and related characteristics of the resulting membranes critically limit the choice of materials. It is beyond the scope of this book to give details on such an extremely complex matter, and readers are referred to specific handbooks and literature papers in this field. 77 Membrane-Assisted Crystallization Technology Downloaded from www.worldscientific.com by NATIONAL UNIVERSITY OF SINGAPORE on 10/09/15. For personal use only.78 Membrane-Assisted Crystallization Technology MEMBRANES SYMMETRIC ASYMMETRIC HOMOGENEOUS DENSE FILM POROUS SPONGE-TYPE COMPOSITE INTEGRAL Porous skyn layer Dense skyn layer

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Steady states in membrane distillation: influence of membrane wetting

Cited by 40 publications

References 26 publications

Pervaporation and vacuum membrane distillation processes: Modeling and experiments

Pervaporation and vacuum membrane distillation processes: Modeling and experiments

Thermal boundary layers in sweeping gas membrane distillation processes

Membrane Materials

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