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Chemical Engineering CommunicationsVolume 199, Issue 7, 2012, Pages 849-864

Enhanced arsenic removal from water by activated red mud based on hydrated iron(III) and titan(IV) oxides(Article)

  • Vukašinović-Pesic, V.L.,
  • Rajaković-Ognjanović, V.N.,
  • Blagojević, N.Z.,
  • Grudić, V.V.,
  • Jovanović, B.M.,
  • Rajaković, L.V.
  • View Correspondence (jump link)
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  • aFaculty of Metallurgy and Technology, University of Montenegro, Cetinjski put bb, 81000 Podgorica, Montenegro
  • bFaculty of Civil Engineering, University of Belgrade, Beograd, Serbia
  • cFaculty of Technology and Metallurgy, University of Belgrade, Beograd, Serbia

Abstract

In this study, acid heat-activated neutralized red mud (AB) was promoted as an efficient sorbent for the removal of inorganic arsenic from water. Three sorbents: neutralized red mud (Bauxsol), acid-treated Bauxsol (aBauxsol), and AB were investigated for arsenic removal. The sorption of arsenic on these adsorbents was studied as a function of contact time, initial arsenic concentration, and adsorbent dosage. The Langmuir isotherm was the best-fit adsorption isotherm model for the experimental data. The adsorption capacity of the activated red mud for As(V) was found to be 1.49 mg g -1 at a pH of water of 7.0. It was observed that AB at a dose of 6.0 gL -1 could effectively remove As(III) and As(V) from water. Anion interference on a molar basis was found to follow the order: phosphate interference was higher than sulfate interference, which was higher than bicarbonate interference. © Taylor & Francis Group, LLC.

Author keywords

Acid and heat treatmentAcid treatmentArsenate adsorptionBauxsolCompetitive anionsRed mud

Indexed keywords

Engineering uncontrolled termsAcid treatmentsAdsorbent dosageAdsorption capacitiesAdsorption isotherm modelArsenate adsorptionArsenic concentrationArsenic removalBauxsolContact timeExperimental dataInorganic arsenicLangmuir isothermMolar basisRed mud
Engineering controlled terms:AdsorbentsAdsorptionAdsorption isothermsArsenicIron compoundsNegative ionsPollution control
Engineering main heading:Chemicals removal (water treatment)
  • ISSN: 00986445
  • CODEN: CEGCA
  • Source Type: Journal
  • Original language: English
  • DOI: 10.1080/00986445.2011.631235
  • Document Type: Article

  Vukašinović-Pesic, V. L.; Faculty of Metallurgy and Technology, University of Montenegro, Cetinjski put bb, Montenegro;
© Copyright 2012 Elsevier B.V., All rights reserved.

Cited by 11 documents

Chen, Z. , Su, M. , Chen, N.
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Use of (modified) natural adsorbents for arsenic remediation: A review
(2019) Science of the Total Environment
Venkatesan, G. , Narayanan, S.L.
Synthesis of Fe2O3-coated and HCl-treated bauxite ore waste for the adsorption of arsenic (III) from aqueous solution: Isotherm and kinetic models
(2018) Chemical Engineering Communications
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