IFEG 20353
INSTITUTO DE FISICA ENRIQUE GAVIOLA
Unidad Ejecutora - UE
artículos
Título:
Application of high resolution X-ray emission spectroscopy on the study of Cr ion adsorption by activated carbon
Autor/es:
F.R. ESPINOZA QUIÑONES; A.N. MÓDENES; A.S. CÂMERA; G. STUTZ; G. TIRAO; S.M. PALACIO; A.D. KROUMOV; A.P. OLIVEIRA; V.L. ALFLEN
Revista:
APPLIED RADIATION AND ISOTOPES
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 2010 vol. 68 p. 2208 - 2213
ISSN:
0969-8043
Resumen:
In this work granular activated carbon has been chosen as an absorbent in order to investigate theCr(VI) reduced by adsorption experiments. Several batch chromium-sorption experiments were carried out using 0.25 gof granular activated carbon in 50mL aqueous solution containing approximately 70 and 140mgL^(-1) of Cr(VI) and Cr(III), respectively. CrKb fluorescence spectra of Cr adsorbed in a carbon matrix and Cr reference materials were measured using a high-resolution Johann-type spectrometer. Based on evidence from the CrKb satellite lines, the Cr(VI) reduction process has actually happened during metal adsorption by the activated carbon.
