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Cited by 112Arsenic contamination and mitigationAdsorption and biosorption for pollutant removalEnvironmental remediation with nanomaterials

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Kilogram-scale synthesis of iron oxy-hydroxides with improved arsenic removal capacity: Study of Fe(II) oxidation–precipitation parameters

Tresintsi, Sofia, Simeonidis, Konstantinos, Vourlias, George, Stavropoulos, George, Mitrakas, Manassis·2012·Water Research
DOI 10.1016/j.watres.2012.06.049
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Abstract

Various iron oxy-hydroxides were synthesized in a continuous flow kilogram-scale production reactor through the precipitation of FeSO(4) and FeCl(2) in the pH range 3-12 under intense oxidative conditions to serve as arsenic adsorbents. The selection of the optimum adsorbent and the corresponding conditions of the synthesis was based not only on its maximum As(III) and As(V) adsorption capacity but also on its potential efficiency to achieve the arsenic health regulation limit in NSF challenge water. As a result, the adsorbent prepared at pH 4, which consists of schwertmannite, was selected because it exhibited the highest adsorption capacity of 13 μg As(V)/mg, while maintaining a residual arsenic concentration of 10 μg/L at an equilibrium pH 7. The high surface charge and the activation of an ion-exchange mechanism between SO(4)(2-) adsorbed in the Stern layer and arsenate ions were found to significantly contribute to the increased adsorption capacity. Adsorption capacity values observed in rapid scale column experiments illustrate the improved efficiency of the qualified adsorbent compared to the common commercial arsenic adsorbents.

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Metadata

Authors
Tresintsi, S., Simeonidis, K., Vourlias, G., Stavropoulos, G., & Mitrakas, M.
Affiliations
Aristotle University of Thessaloniki (GR)
Corresponding author
Mitrakas, Manassis
ORCID
Venue
Water Research
Publisher
Elsevier BV
Published
2012-10
Volume
46
Issue
16
Pages
5255-5267
ISSN
0043-1354 (ISSN-L)
DOI
10.1016/j.watres.2012.06.049
OpenAlex
W2055186870
Cited by
112
References
1
Citations by year
2026: 2 · 2025: 4 · 2024: 4 · 2023: 5 · 2022: 6 · 2021: 12 · 2020: 9 · 2019: 4 · 2018: 13 · 2017: 11 · 2016: 11 · 2015: 14 · 2014: 12 · 2013: 5
FWCI
7.93
Type
journal article
Language
en
Open access
closed
Licence
www.elsevier.com/tdm/userlicense/1.0/ (tdm)
Locations
  • Water Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
European Commission
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 › Environmental Science › Environmental Engineering › Environmental remediation with nanomaterials
Keywords
iron oxyhydroxide, arsenic removal, schwertmannite, arsenate adsorption, arsenite adsorption, kilogram-scale synthesis, continuous flow reactor, ion exchange, sulfate adsorption, surface charge, drinking water treatment
MeSH terms
Adsorption, Arsenic, Ferric Compounds, Ferrous Compounds, Hydrogen-Ion Concentration, Water Pollutants, Chemical, Water Purification, Drinking Water

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