Η ικανότητα ανταλλαγής ιόντων του Ζεόλιθου

Frederick A. Mumpton, Department of the Earth Sciences, State University College, Brockport, NY 14420 Introduction As agriculturalists the world over increase their effort to expand crop and animal production, more and more attention is being paid to various mineral materials as soil amendments and as dietary supplements in animal husbandry. The close relationship between the agricutura1 and geological sciences is not new–crop production depends on the existence and maintenance of fertile soil and agronomists rely on knowledge of mineralogy and geochemist}’ of clays and other soil constituents. In the animal sciences, the addition of crushed limestone to chicken feed to ... Διαβάστε περισσότερα

Vandana Swarnkar (1) & Radha Tomar (2) (1) School of Studies in Chemistry Jiwaji University, GWALIOR – 474011 (M.P.) INDIA (2) School of Studies in Chemistry Jiwaji University, GWALIOR – 474011 (M.P.) INDIA ABSTRACT: The use of surfactant-modified zeolites as sorbents to remove multiple types of contaminants from water has attracted great attention recently. Sorption of cationic surfactants onto negatively charged zeolite and clay mineral surfaces is controlled by cation exchange and hydrophobic interactions. When surfactant loading is less than the cation exchange capacity (CEC) of the substrate, the retention of surfactant is via cation exchange. Once the surfactant loading ... Διαβάστε περισσότερα