Iron(II) modified natural zeolites for hexavalent chromium removal from contaminated water

被引：19
|
作者：
Lofu, Antonio [1 ]
Mastrorilli, Piero [1 ]
Dell'Anna, Maria Michela [1 ]
Mali, Matilda [1 ]
Sisto, Raffaello [2 ]
Vignola, Rodolfo [2 ]
机构：
[1] Politecn Bari, DICATECh, Bari, Italy
[2] ENI SpA, Ctr Ric Monterotondo, Refining & Mkt Div, Bari, Italy
来源：
ARCHIVES OF ENVIRONMENTAL PROTECTION | 2016年 / 42卷 / 01期
关键词：
Cr abatement; natural zeolites; water remediation; ferrous iron; AQUEOUS-SOLUTION; FERROUS IRON; CHROMATE TRANSPORT; ION-EXCHANGE; HEAVY-METALS; REDUCTION; CLINOPTILOLITE; CR(VI); GROUNDWATER; HYDROLYSIS;
D O I：
10.1515/aep-2016-0004
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
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).
引用
收藏
页码：35 / 40
页数：6
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