A series of Fe–Mn binary oxides with different Fe:Mn ratios (1:1, 3:1, 6:1, 9:1) were synthesized to investigate the optimal Fe:Mn ratio for the removal of As(III) and As(V). Batch experiments were performed to determine the rate of adsorption and equilibrium isotherms. Adsorption kinetics were well described by the pseudo-second-order kinetic model for both As(III) and As(V). The adsorption equilibrium data fitted well to Langmuir and Freundlich isotherms. The maximum As(V) sorption capacity was observed at an Fe:Mn ratio of 6:1 (65.0 mg/g), whereas maximum As(III) uptake was at Fe:Mn ratio 3:1 (46.9 mg/g). Arsenic levels in real water samples were reduced from 37 μg/l to below the EU Water Framework Directive limit (10 μg/L) after treatment with Fe–Mn adsorbents.
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February 10 2016
Adsorption mechanism of As(V) and As(III) on Fe–Mn binary oxides in synthetic and real water matrices Available to Purchase
Jasmina Nikić;
1Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Serbia
E-mail: [email protected]
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Jasmina Agbaba;
Jasmina Agbaba
1Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Serbia
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Malcolm Watson;
Malcolm Watson
1Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Serbia
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Snežana Maletić;
Snežana Maletić
1Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Serbia
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Jelena Molnar Jazić;
Jelena Molnar Jazić
1Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Serbia
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Božo Dalmacija
Božo Dalmacija
1Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Serbia
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Water Supply (2016) 16 (4): 992–1001.
Article history
Received:
September 16 2015
Accepted:
January 26 2016
Citation
Jasmina Nikić, Jasmina Agbaba, Malcolm Watson, Snežana Maletić, Jelena Molnar Jazić, Božo Dalmacija; Adsorption mechanism of As(V) and As(III) on Fe–Mn binary oxides in synthetic and real water matrices. Water Supply 1 August 2016; 16 (4): 992–1001. doi: https://doi.org/10.2166/ws.2016.015
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