Bimetallic Fe/Ni nanoparticles derived from green synthesis for the removal of arsenic (V) in mine wastewater

Yuanqiong Lin; Xiaoying Jin; Nasreen Islam Khan; Gary Owens; Zuliang Chen

doi:10.1016/j.jenvman.2021.113838

Bimetallic Fe/Ni nanoparticles derived from green synthesis for the removal of arsenic (V) in mine wastewater

J Environ Manage. 2022 Jan 1:301:113838. doi: 10.1016/j.jenvman.2021.113838. Epub 2021 Sep 27.

Authors

Yuanqiong Lin¹, Xiaoying Jin², Nasreen Islam Khan³, Gary Owens³, Zuliang Chen⁴

Affiliations

¹ Fujian Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Fujian Normal University, Fuzhou, 350007, Fujian Province, China.
² Fujian Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Fujian Normal University, Fuzhou, 350007, Fujian Province, China. Electronic address: xyjin@fjnu.edu.cn.
³ Environmental Contaminants Group, Future Industries Institute, University of South Australian, Mawson Lakes, SA, 5095, Australia.
⁴ Fujian Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Fujian Normal University, Fuzhou, 350007, Fujian Province, China. Electronic address: zlchen@fjnu.edu.cn.

PMID: 34592664
DOI: 10.1016/j.jenvman.2021.113838

Abstract

Since the incidences of arsenicosis have significantly increased worldwide in the last decade, remediation of arsenic (As) pollution is now imperative. In this study, calcined green synthesized Fe/Ni nanoparticles (C-Fe/Ni NPs) were evaluated for their efficacy for As (V) removal from aqueous solution. Under optimal experimental conditions As (V) removal efficiency reached 87.3%. Analysis of changes in the surface properties of C-Fe/Ni NPs before and after interaction with As (Ⅴ) using a range of advanced characterization techniques including IC-AFS, SEM-EDS, XPS and XRD revealed that the As removal mechanism involved only adsorption. Adsorption kinetics followed a pseudo-second order rate model (R² > 0.986) and adsorption best fit the Langmuir isotherm model (R² > 0.958). Thermodynamic studies indicated that adsorption was a spontaneous endothermic process. On the basis of these results, a removal mechanism of As (Ⅴ) by C-Fe/Ni NPs was proposed. Finally, the efficacy of the material for practical remediation of As from aqueous solution was assessed, including the influence of coexisting anions. While Cl^-, NO₃^- and SO₄^2- had little influence on As (V) removal, both H₂PO₄^- and HCO₃^- significantly negatively affected removal.

Keywords: As (Ⅴ); C–Fe/Ni NPs; Green synthesis; Nanoparticles; Removal.

MeSH terms

Adsorption
Arsenic*
Iron
Kinetics
Nanoparticles*
Wastewater
Water Pollutants, Chemical* / analysis

Substances

Waste Water
Water Pollutants, Chemical
Iron
Arsenic