Application of high resolution X-ray emission spectroscopy on the study of Cr ion adsorption by activated carbon

作者：Espinoza Quinones Fernando R^*; Modenes Aparecido N; Camera Adriana S; Stutz Guillermo; Tirao German; Palacio Soraya M; Kroumov Alexander D; Oliveira Ana P; Alflen Vanessa L

来源：Applied Radiation and Isotopes, 2010, 68(12): 2208-2213.

DOI：10.1016/j.apradiso.2010.06.006

• Cr(VI) reduction
• Adsorption
• Activated carbon
• High-resolution K beta spectroscopy

In this work granular activated carbon has been chosen as an absorbent in order to investigate the Cr(VI) reduced by adsorption experiments. Several batch chromium-sorption experiments were carried out using 0.25 g of granular activated carbon in 50 mL aqueous solution containing approximately 70 and 140 mg L(-1) of Cr(VI) and Cr(III), respectively. Cr-K beta 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 Cr-Kb satellite lines, the Cr(VI) reduction process has actually happened during metal adsorption by the activated carbon.

• 出版日期2010-12