Three different types of Fe(II)-modified natural zeolites were tested as supports in continuous-flow columns for the treatment of Cr(VI) contaminated water. The natural zeolites chosen as support were commercially available Zeosand (80% clinoptilolite), ATZ (79% phillipsite/chabazite), and ZS-55RW (90% Chabazite). All the examined modified zeolites turned out active for hexavalent chromium abatement, lowering its concentration below the European regulation level, even at relatively high flow rates (40 mL/h, linear velocity 15 cm/h). Zeosand, having a broader pH range of stability, was found to be the best one in terms of both Fe(II) uptake (0.54 wt%) and Cr removal (90 mg Cr/Kg zeolite).
|Titolo:||Iron(II) Modified Natural Zeolites for Hexavalent Chromium Removal from Contaminated Water|
|Data di pubblicazione:||2016|
|Digital Object Identifier (DOI):||10.1515/aep-2016-0004|
|Appare nelle tipologie:||1.1 Articolo in rivista|
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|Archives of Environmental Protection vol 42, no 1, 35-40, 2016.pdf||Versione editoriale||Open Access Visualizza/Apri|