Green Synthesis of Resin Supported Nanoiron and Evaluation of Efficiency for the Remediation of Cr(VI) Contaminated Groundwater by Batch Tests

In this study the fixation of nano zero valent iron (nZVI) on a polymeric matrix applying an environmentally friendly technique and the performance of this material for the treatment of Cr(VI) contaminated groundwater were evaluated. The investigated method could be applied in a pump & treat gro...

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Bibliographic Details
Published in:Bulletin of environmental contamination and toxicology 2018-12, Vol.101 (6), p.711-717
Main Authors: Toli, Aikaterini, Varouxaki, Alexia, Mystrioti, Christiana, Xenidis, Anthimos, Papassiopi, Nymphodora
Format: Article
Language:English
Subjects:
Aquatic Pollution
Chromium
Chromium - chemistry
Composite materials
Contamination
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Environmental Restoration and Remediation - methods
Ferric Compounds - chemistry
Green tea
Groundwater
Groundwater - chemistry
Groundwater pollution
Groundwater treatment
Iron
Iron - chemistry
Kinetics
Oxidation
Pollution
Polyphenols
Porous materials
Reduction
Remediation
Soil Science & Conservation
Waste Water Technology
Water Management
Water Pollutants, Chemical - analysis
Water Pollution Control
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Summary:In this study the fixation of nano zero valent iron (nZVI) on a polymeric matrix applying an environmentally friendly technique and the performance of this material for the treatment of Cr(VI) contaminated groundwater were evaluated. The investigated method could be applied in a pump & treat groundwater remediation system. A macroreticular cationic resin was selected as porous host material. It was found that green tea polyphenols were able to penetrate within the macroporous resin matrix and obtain the reduction of Fe(III) to the elemental state. The effectiveness of this composite material in removing Cr(VI) contaminated waters was evaluated by conducting batch tests. It was found that the reduction of Cr(VI) follows a kinetics law of first order with respect to the concentration of Cr(VI) and to the amount of nZVI per liter of solution. The kinetic constant varied between 5·10 −3 and 0.5·10 −3 per min and per mM of nZVI in the pH range 3.5–7.5.
ISSN:0007-4861
1432-0800
DOI:10.1007/s00128-018-2425-2