Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1016/S1385-8947(00)00201-1
Titel (primär) Sorption on natural solids for arsenic removal
Autor Elizalde-González, M.P.; Mattusch, J.; Einicke, D.; Wennrich, R.
Quelle Chemical Engineering Journal
Erscheinungsjahr 2001
Department ANA
Band/Volume 81
Seite von 187
Seite bis 195
Sprache englisch
Keywords Natural solids; Arsenic; Sorption; Zeolites
Abstract Steady state experiments were conducted on arsenic sorption from aqueous solutions by natural solids to test the feasibility of these materials to act as concentrator for arsenic removal from groundwater and drinking water. The solids considered were natural zeolites, volcanic stone, and the cactaceous powder CACMM. The arsenic species studied were As(III), As(V), dimethylarsinic acid (DMA) and phenylarsonic acid (PHA). The arsenic removed was determined from the data obtained by measuring the concentration diminution of the arsenic species in the liquid phase at equilibrium before and after the adsorption experiment by means of ICP-AES for the total concentration of arsenic and IC-ICP-MS to determine the arsenic species. The latter method allowed the detection of As(V) additionally formed as a result of the oxidation of As(III) on some of the zeolites. The sorption of the arsenic species onto zeolites was studied on both non-activated and activated zeolites, as well as on zeolites hydrogenated or modified with iron, and with respect to varying pH. The kinetics and the ability to desorb and readsorb the arsenic species were investigated for selected zeolites.
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Elizalde-González, M.P., Mattusch, J., Einicke, D., Wennrich, R. (2001):
Sorption on natural solids for arsenic removal
Chem. Eng. J. 81 , 187 - 195 10.1016/S1385-8947(00)00201-1