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Membrane in procesele de separare. IV. Aplicatii ale membranelor de micro- si ultrafiltrare la purificarea colorantilor

Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: M.Nechifor, G.Popescu, C.Neacsu, B.Albu, N.Luca, G.Nechifor

Editorial: Revista de Chimie, 41(9), p.703-707, 1990.

Rezumat:

The obtaining of teh polisulphone membranes for the purification of the dispersion deys by microfiltration was studied. The phase inversion method makes possible the obtaining of membranes with characteristics enabling the micro- and ultra-filtration and with an asymmetrical structure rendered evident by electron scanning microscopy. The performances of the obtained membranes have been determined by the exploitation conditions (flow conditions, pressure, nature of the dispersion agents). The phenomenon of the concentration polarization, the membrane compaction, the formation of dynamic membranes in the process of removing the impurifying ions from the dye dispersion were rendered evident.

Cuvinte cheie: membrane applications, microfiltration, ultrafiltration, deys separation