A highly thin and perfluorinated porous membrane has been fabricated according to "Breath Figure" approach [1] for treating salt solutions via thermally driven membrane distillation [2]. Nano-assembly of water droplets has been used to form pores [3] through a HYFLON AD nanolfilm standing, in turn, on a high-definition honeycomb PES membrane [4-6]. High permeability and resistance to wetting together with a good mechanical strenght have been combined in a unique membrane, thus leading to an unusual compromise between productivity and thermal efficiency when NaCl solutions 5 mM have been processed. Ultrafast flux together with high thermal efficiency have been regarded as the result of very low resistance to transport and very low thermal conductivity of the materials used. Regular polymeric architecture together with defined chemistry have allowed overcoming the current productivity-efficiency trade-off, resulting promising for the construction of advanced thermally-driven membrane distillation.

Ultra-fast flux and high termally efficiency water desalination by using an ultrathin porous hyflon-ad membrane

ML Perrotta
Primo
;
G Saielli;F Macedonio;E Drioli;L Giorno;A Gugliuzza
Ultimo
Conceptualization
2018

Abstract

A highly thin and perfluorinated porous membrane has been fabricated according to "Breath Figure" approach [1] for treating salt solutions via thermally driven membrane distillation [2]. Nano-assembly of water droplets has been used to form pores [3] through a HYFLON AD nanolfilm standing, in turn, on a high-definition honeycomb PES membrane [4-6]. High permeability and resistance to wetting together with a good mechanical strenght have been combined in a unique membrane, thus leading to an unusual compromise between productivity and thermal efficiency when NaCl solutions 5 mM have been processed. Ultrafast flux together with high thermal efficiency have been regarded as the result of very low resistance to transport and very low thermal conductivity of the materials used. Regular polymeric architecture together with defined chemistry have allowed overcoming the current productivity-efficiency trade-off, resulting promising for the construction of advanced thermally-driven membrane distillation.
2018
Istituto per la Tecnologia delle Membrane - ITM
Honeycomb membrane
HYFLON AD
Nanofilm
Water desalination
Membrane Distillation
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14243/356228
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