Cited by 79Arsenic contamination and mitigationAdsorption and biosorption for pollutant removalEnvironmental remediation with nanomaterials

Functionalized Magnetic Nanoparticles as New Adsorption Materials for Arsenic Removal from Polluted Waters

Saiz, Juan, Bringas, Eugenio, Ortiz, Inmaculada·2014·Journal of Chemical Technology & Biotechnology

Abstract

Abstract BACKGROUND One of the most harmful pollutants to human health present in natural water is arsenic. In this work magnetic silica/magnetite nanoparticles functionalized with aminopropyl groups incorporating Fe3+ (S1‐F3) were investigated for their suitability as materials to adsorb As5+ and As3+ from polluted groundwater. RESULTS Magnetite nanoparticles obtained by a co‐precipitation method were coated with a mesoporous silica layer generated by hydrolysis and condensation of tetraethyl orthosilicate. The resultant material was grafted with amino derivatives coordinated with Fe3+. The synthesis was confirmed by FT‐IR, TGA and BET analyses. After analysis of the affinity of solids with different degrees of functionalization towards arsenate and arsenite species, the material S1‐F3 resulted in maximum arsenic adsorption capacities (14.7 ± 0.3 mg As3+g‐1 and 121 ± 4.1 mg As5+g‐1). The adsorption equilibrium was satisfactorily described by the Langmuir model and exhibited low sensitivity to temperatures in the range 288–308K. Kinetic data were correlated with a pseudo‐second‐order kinetic model based on solid capacity that considers the rate of the surface reaction as the rate‐limiting step. CONCLUSION The promising results confirm that the material S1‐F3 is an effective adsorbent for the removal of arsenate from polluted water. More research is being conducted to analyse the influence of competing anions and sorbent regeneration. © 2014 Society of Chemical Industry.

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Crossref · 10.1002/jctb.4331

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  • The adsorption technique is considered simple and effective and has garnered significant attention in recent studies, particularly for adhesion dyes.

    “The adsorption technique, considered for its simplicity and effectiveness, has garnered significant attention in recent studies, particularly in the context of adhesion dyes [18,19].”

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Authors
Saiz, J., Bringas, E., & Ortiz, I.
Affiliations
  • Universidad de Cantabria (ES)
  • Dept. Ingenierías Química y Biomolecular, ETSIIyT Universidad de Cantabria Avda. Los Castros s/n 39005 Santander Spain
Corresponding author
Bringas, Eugenio
Venue
Journal of Chemical Technology & Biotechnology
Publisher
Wiley
Published
2014-05-12
Volume
89
Issue
6
Pages
909-918
ISSN
  • 0142-0356 (ISSN-L)
  • 0268-2575
  • 1097-4660
OpenAlex
W2165044251
Cited by
79
References
66
Citations by year
2026: 1 · 2025: 3 · 2024: 6 · 2023: 6 · 2022: 8 · 2021: 9 · 2020: 5 · 2019: 9 · 2018: 8 · 2017: 4 · 2016: 12 · 2015: 6 · 2014: 2
FWCI
6.10
Type
journal article
Language
en
Open access
closed
Locations
Journal of Chemical Technology & Biotechnology (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Environmental Chemistry › Arsenic contamination and mitigation
  • Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
  • Physical Sciences › Engineering › Biomedical Engineering › Environmental remediation with nanomaterials
Keywords
arsenic removal, arsenate adsorption, arsenite adsorption, magnetic nanoparticles, Fe3O4 nanoparticles, silica coating, aminopropyl functionalization, iron(III) coordination, groundwater contamination, adsorption isotherms, adsorption kinetics, water treatment

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