Heavy-metal uptake by a high cation-exchange-capacity montmorillonite: the role of permanent charge sites
by
Stathi P., Papadas I.T. , Tselepidou A. and Deligiannakis Y.
Copper, nickel and zinc removal by peanut hulls: batch and column studies in mono, tri-component systems and with real effluent
by
Oliveira F.D. , Soares A.C., Freitas O.M. and Figueiredo S.A.