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Simultaneous removal of nitrate/phosphate with bimetallic nanoparticles of Fe coupled with copper or nickel supported on chelating resin

  • Zhanhui ShenEmail author
  • Xinyi Dong
  • Jialu ShiEmail author
  • Yuanhao Ma
  • Daoru Liu
  • Jing Fan
Research Article
  • 14 Downloads

Abstract

Given the prevalence of nitrate and phosphate in surface and groundwater, it is important to develop technology for the simultaneous removal of nitrate and phosphate. In this study, we prepared the bimetallic nanoparticles of Fe coupled with copper or nickel supported on chelating resin DOW 3N (D-Fe/Ni and D-Fe/Cu) for removing nitrate and phosphate simultaneously. XPS profiles revealed that Cu has better ability than Ni to increase the stability of Fe nanoparticles and prevent nZVI from oxidation. The results showed that nitrate removal efficiencies by D-Fe/Ni and D-Fe/Cu were 98.7% and 95.5%, respectively and the phosphate removal efficiencies of D-Fe/Cu and D-Fe/Ni were 99.0% and 93.0%, respectively. Besides adsorption and coprecipitation as reported in previous studies, the mechanism of phosphate removal also includes the adsorption of the newly formed polymeric ligand exchanger (PLE). Moreover, in previous studies, the presence of phosphate had significant negative effects on the reduction of nitrate. However, in this study, the removal efficiency of nitrate was less affected with the increasing concentration of phosphate for D-Fe/Cu. This was mainly because D-Fe/Cu had higher adsorption capacity of phosphate due to the newly formed PLE according to the XPS depth profile analysis.

Keywords

Resin Bimetallic nanoparticles Nanoscale zero-valent iron Nitrate Phosphate 

Notes

Funding information

This research was financially funded by the postdoctoral science foundation of China (No. 2018M642758), the State Key Laboratory of Pollution Control and Resource Reuse Foundation (No. PCRRF 17034), the Education Department of the Henan Science and Technology Fund Project (No. 16A610009), the State Key Program of National Natural Science of China (No. 51438008 and No. 51604099).

Supplementary material

11356_2019_5050_MOESM1_ESM.docx (668 kb)
ESM 1 (DOCX 668 kb)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Key Laboratory for Yellow River and Huai River Water Environmental and Pollution Control, Ministry of Education, Henan Key Laboratory for Environmental Pollution Control, School of EnvironmentHenan Normal UniversityXinxiangChina
  2. 2.State Key Laboratory of Pollution Control and Resource Reuse, School of the EnvironmentNanjing UniversityNanjingChina

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