http://www.cnr.it/ontology/cnr/individuo/prodotto/ID55093
Membrane distillation-crystallization of seawater reverse osmosis brines (Articolo in rivista)
- Type
- Label
- Membrane distillation-crystallization of seawater reverse osmosis brines (Articolo in rivista) (literal)
- Anno
- 2010-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/j.seppur.2009.11.004 (literal)
- Alternative label
Ji X., Curcio E., Al Obaidani S., Di Profio G. Fontananova E., Drioli, E. (2010)
Membrane distillation-crystallization of seawater reverse osmosis brines
in Separation and purification technology (Print)
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Ji X., Curcio E., Al Obaidani S., Di Profio G. Fontananova E., Drioli, E. (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- Note
- Scopus (literal)
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Department of Chemical Engineering and Materials, University of Calabria, Rende (CS), Italy
Institute on Membrane Technology ITM-CNR, Rende (CS), Italy
Department of Mechanical and Industrial Engineering, Sultan Qaboos University, Oman (literal)
- Titolo
- Membrane distillation-crystallization of seawater reverse osmosis brines (literal)
- Abstract
- This work aims at investigating the performance, in terms of water recovery and NaCl crystallization kinetics, of a membrane distillation crystallization (MDC) bench-scale plant operated on brines discharged from a seawater reverse osmosis (RO) unit.
Experimental tests carried out on artificial RO concentrates resulted in the production of 21 kg/m3 of NaCl crystals, exhibiting substantially a ordinary cubic shape with size between 20 and 200 m; the final water recovery factor increased up to 90%. Analogous investigations carried out on RO brines from natural seawater were affected by the presence of dissolved organic matter, showing a 20% reduction of the amount of salt crystallized, and a 8 decrease of the transmembrane flux.
Growth rate of sodium chloride crystals generated from natural RO brines varied between 0.8×10 8 and 2.8×10 8 m s; these values were 15 23% lower than those measured for NaCl crystals grown form artificial concentrates. In general, the NaCl crystal size distribution was characterized by a narrow dispersion (coefficient of variation within 35 40%).
MDC operations were stable over 100 h as a result of a careful control of supersaturation, polarization phenomena, nucleation process and hydrodynamics. (literal)
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