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

页码：35 / 40

页数：6

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