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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).
Słowa kluczowe
Czasopismo
Rocznik
Tom
Strony
35--40
Opis fizyczny
Bibliogr. 55 poz., tab., wykr.
Twórcy
autor
- Politecnico di Bari, Italy DICATECh
autor
- Politecnico di Bari, Italy DICATECh
autor
- Politecnico di Bari, Italy DICATECh
autor
- Politecnico di Bari, Italy DICATECh
autor
- Centro Ricerche Monterotondo, Italy ENI S.p.A. Refining and Marketing Division
autor
- Centro Ricerche Monterotondo, Italy ENI S.p.A. Refining and Marketing Division
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-a71ab3d8-ed9a-46b8-be49-4a678bfbc305