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Issue 69, 2018, Issue in Progress
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A critical review on arsenic removal from water using iron-based adsorbents

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Abstract

Intensive research efforts have been pursued to remove arsenic (As) contamination from water with an intention to provide potable water to millions of people living in different countries. Recent studies have revealed that iron-based adsorbents, which are non-toxic, low cost, and easily accessible in large quantities, offer promising results for arsenic removal from water. This review is focused on the removal of arsenic from water using iron-based materials such as iron-based nanoparticles, iron-based layered double hydroxides (LDHs), zero-valent iron (ZVI), iron-doped activated carbon, iron-doped polymer/biomass materials, iron-doped inorganic minerals, and iron-containing combined metal oxides. This review also discusses readily available low-cost adsorbents such as natural cellulose materials, bio-wastes, and soils enriched with iron. Details on mathematical models dealing with adsorption, including thermodynamics, kinetics, and mass transfer process, are also discussed. For elucidating the adsorption mechanisms of specific adsorption of arsenic on the iron-based adsorbent, X-ray photoelectron spectroscopy (XPS) and X-ray absorption spectroscopy (XAS) are frequently used. Overall, iron-based adsorbents offer significant potential towards developing adsorbents for arsenic removal from water.

Graphical abstract: A critical review on arsenic removal from water using iron-based adsorbents

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Publication details

The article was received on 15 Oct 2018, accepted on 21 Nov 2018 and first published on 27 Nov 2018


Article type: Review Article
DOI: 10.1039/C8RA08512A
RSC Adv., 2018,8, 39545-39560
  • Open access: Creative Commons BY license
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    A critical review on arsenic removal from water using iron-based adsorbents

    L. Hao, M. Liu, N. Wang and G. Li, RSC Adv., 2018, 8, 39545
    DOI: 10.1039/C8RA08512A

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