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Article

Removal of Molybdenum(VI) from Raw Water Using Nano Zero-Valent Iron Supported on Activated Carbon

1
Henan International Joint Laboratory of New Civil Engineering Structure, College of Civil Engineering, Luoyang Institute of Science and Technology, Luoyang 471023, China
2
College of Civil Engineering, Guangzhou University, Guangzhou 510006, China
3
Laboratory of Functional Molecules and Materials, School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo 255000, China
*
Authors to whom correspondence should be addressed.
Water 2020, 12(11), 3162; https://doi.org/10.3390/w12113162
Received: 7 October 2020 / Revised: 5 November 2020 / Accepted: 7 November 2020 / Published: 12 November 2020
(This article belongs to the Special Issue Advances in Wastewater Treatment Processes)
Traces of Molybdenum (Mo) in drinking water pose potent dangers owing to its harmful effects on the health of humans. This study used nanoscale zero-valent iron (Fe0) supported by activated carbon (NZVI/AC) for removing Mo(VI) from raw water. In an attempt to gain an understanding of the various factors that affect the process, we designed the study to look into the impact of various experimental parameters including pH, adsorption kinetics, and coexisting ions on the Mo(VI) removal using fixed-bed column runs and a batch-adsorption method and for Mo(VI) removal using NZVI/AC. The optimum conditions were found to be pH 4.5 and an equilibrium time of 9 h and 72 h for simulation water (SW) and raw water (RW), respectively. The removal of Mo(VI) was remarkably inhibited by the presence of silicate (SiO42) and phosphate (PO43), while the impact of humic acid and some other anions was insignificant. Metal cations such as Fe3+, Al3+, Zn2+, and Ni2+ enhanced the adsorption of Mo(VI). The influent contaminant concentration Mo(VI) in raw water was found to be 0.1603 mg/L, the empty-bed contact time (EBCT) was 3 and 6 min, whereas the breakthrough empty-bed volumes were 800 and 1100 and at the value of 70 μg/L provided by WHO provisional guidelines, respectively. View Full-Text
Keywords: NZVI/AC; molybdenum (VI) (Mo(VI)); adsorption; raw water (RW); simulation water (SW) NZVI/AC; molybdenum (VI) (Mo(VI)); adsorption; raw water (RW); simulation water (SW)
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MDPI and ACS Style

Zhu, H.; Huang, Q.; Fu, S.; Zhang, X.; Shi, M.; Liu, B. Removal of Molybdenum(VI) from Raw Water Using Nano Zero-Valent Iron Supported on Activated Carbon. Water 2020, 12, 3162. https://doi.org/10.3390/w12113162

AMA Style

Zhu H, Huang Q, Fu S, Zhang X, Shi M, Liu B. Removal of Molybdenum(VI) from Raw Water Using Nano Zero-Valent Iron Supported on Activated Carbon. Water. 2020; 12(11):3162. https://doi.org/10.3390/w12113162

Chicago/Turabian Style

Zhu, Huijie; Huang, Qiang; Fu, Shuai; Zhang, Xiuji; Shi, Mingyan; Liu, Bo. 2020. "Removal of Molybdenum(VI) from Raw Water Using Nano Zero-Valent Iron Supported on Activated Carbon" Water 12, no. 11: 3162. https://doi.org/10.3390/w12113162

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