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Titolo:
Retention of heavy metal ions with nanofiltration inorganic membranes by grafting chelating groups
Autore:
Bougen, A; Rabiller-Baudry, M; Chaufer, B; Michel, F;
Indirizzi:
Univ Rennes 1, Lab Proc Separat, UC 991, INRA, F-35042 Rennes, France UnivRennes 1 Rennes France F-35042 UC 991, INRA, F-35042 Rennes, France INRA, Rech Technol Laitiere Lab, UP 121, F-35042 Rennes, France INRA Rennes France F-35042 Laitiere Lab, UP 121, F-35042 Rennes, France
Titolo Testata:
SEPARATION AND PURIFICATION TECHNOLOGY
fascicolo: 1-3, volume: 25, anno: 2001,
pagine: 219 - 227
SICI:
1383-5866(20011001)25:1-3<219:ROHMIW>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
POROUS MEMBRANES; ULTRAFILTRATION; SEPARATION; PERMEATION; CATIONS; REMOVAL;
Keywords:
grafted membrane; complex; metal ions; nanofiltration;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Rabiller-Baudry, M Univ Rennes 1, Lab Proc Separat, UC 991, INRA, Campus Beaulieu,Batiment 10A,263 Ave Gen Leclerc, F-35042 Rennes, France Univ Rennes 1 Campus Beaulieu,Batiment 10 A,263 Ave Gen Leclerc Rennes France F-35042
Citazione:
A. Bougen et al., "Retention of heavy metal ions with nanofiltration inorganic membranes by grafting chelating groups", SEP PURIF T, 25(1-3), 2001, pp. 219-227

Abstract

New membranes with complexing abilities were obtained by grafting titanatecoupling agents bearing ethylenediamine groups (EDA, strong chelating ligand towards Cu2+) or pyrophosphate groups (PP, weak chelating ligand towardsCu2+ and Zn2+) on inorganic nanofiltration membranes. The retention of 10 mmol l(-1) chloride solutions of Cu2+ and Zn2+ by the unmodified NF membrane (no complex formation) and the PP grafted membrane (formation of weak complex) was about 50% which is roughly the retention of Ca2+ (no complex formation) with the EDA grafted membrane. Complex formation with the PP graftedmembrane does not appear strong enough to enhance Zn2+ and Cu2+ retention. The retention of Cu2+ was enhanced up to 80-90% with the EDA grafted membrane, due to the occurrence of formation of a strong complex with EDA groups. Contrary to resin process where a breakthrough curve is expected, a steady-state of Cu2+ retention was observed, whereas Cu2+ in the feed solution was about 50 times the membrane capacity to bind the metal cation. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/01/21 alle ore 12:42:14