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Green Synthesis and Utility of Nano Fe for Cr(VI) Treatment
1Faculty of Environment, Vietnam National University of Agriculture, Hanoi 131000, Vietnam
Received: Aug 20, 2018 /
Revised: Jul 13, 2021 /
Published: Aug 20, 2018
Main Article Content
Abstract
Zero valent iron (ZVI) nanoparticles have been considered as effective materials for environmental remediation because of their strong reducing ability, high reaction activity, and excellent absorption properties. In this study, we synthesized iron nanoparticles using an environmentally friendly method in order to treat Cr(VI) ions in an aqueous medium. Polyphenols from green tea leaf extracts were used as both the reducing agent and the stabilizer for ZVI nanoparticles. Modern techniques, including scanning electron microscopy (SEM), dynamic light scattering (DLS), X-ray diffraction (XRD), and infrared spectroscopy (FTIR), confirmed that ZVI nanoparticles were successfully prepared and surrounded by polyphenol molecules. Cr(VI) ion treatment of the nanoparticles was most favorable at pH 2.0, and 0.04 g ZVI nanoparticles for a 50 mg L-1 Cr(VI) solution. Under some treatment conditions, removal efficiency was 100%, suggesting that the synthesized ZVI nanoparticles can be used as materials for Cr(VI) ion removal.
Keywords:
Cr(VI) treatment, green synthesis, green tea leaves extract, zero valent iron nanoparticles
Article Details
How to Cite
Thuong, N., Ngoc, L., & Huong, L. (2018). Green Synthesis and Utility of Nano Fe for Cr(VI) Treatment. Vietnam Journal of Agricultural Sciences, 1(1), 35-42. https://doi.org/10.31817/vjas.2018.1.1.04
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