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Adsorption of As(V) from water using Mg-Fe-based hydrotalcite (FeHT).
J Hazard Mater. 2009 Nov 15; 171(1-3):665-70.JH

Abstract

This paper describes a study of the sorptive removal of arsenate (As(V)) from aqueous solutions by synthetically prepared Mg-Fe-based hydrotalcites (FeHT) as layered double hydroxide (LDH) adsorbents. The synthesis of Fe(3+)-substituted hydrotalcites (FeHT) with the chemical formula [Mg(II)(6)Fe(III)(2)(OH)(16)](2+)[CO(3)xyH(2)O](2-) was achieved by a co-precipitation method. The reaction products were characterized by powder X-ray diffraction analysis. The influences of solution pH, initial arsenate (As(V)) concentration, and sorbent concentration were investigated in multiple kinetic runs. The adsorption rates and isotherms were investigated in batch experiments. The pseudo-first-order and second-order kinetic models were tested and the latter was found to fit better to the experimental data. Langmuir and Freundlich isotherms were used to describe the adsorption data from equilibrium experiments. The results have shown that FeHT has a high arsenate removal efficiency, with the ability to reduce the concentration of arsenate in the aqueous solution from an initial value of 330 microg/l to <10 microg/l (i.e. below the limit value specified by WHO).

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Authors+Show Affiliations

Türk T
Mineral Processing Division, Department of Mining Engineering, Karadeniz Technical University, 61080 Trabzon, Turkey.
Alp I
No affiliation info available
Deveci H
No affiliation info available

MeSH

AdsorptionAluminum HydroxideArsenatesArsenicHydrogen-Ion ConcentrationHydroxidesIronKineticsMagnesiumMagnesium HydroxideTemperatureWaste Disposal, FluidWaterWater Pollutants, ChemicalWater PurificationX-Ray Diffraction

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19589641

Citation

Türk, T, et al. "Adsorption of As(V) From Water Using Mg-Fe-based Hydrotalcite (FeHT)." Journal of Hazardous Materials, vol. 171, no. 1-3, 2009, pp. 665-70.
Türk T, Alp I, Deveci H. Adsorption of As(V) from water using Mg-Fe-based hydrotalcite (FeHT). J Hazard Mater. 2009;171(1-3):665-70.
Türk, T., Alp, I., & Deveci, H. (2009). Adsorption of As(V) from water using Mg-Fe-based hydrotalcite (FeHT). Journal of Hazardous Materials, 171(1-3), 665-70. https://doi.org/10.1016/j.jhazmat.2009.06.052
Türk T, Alp I, Deveci H. Adsorption of As(V) From Water Using Mg-Fe-based Hydrotalcite (FeHT). J Hazard Mater. 2009 Nov 15;171(1-3):665-70. PubMed PMID: 19589641.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Adsorption of As(V) from water using Mg-Fe-based hydrotalcite (FeHT). AU - Türk,T, AU - Alp,I, AU - Deveci,H, Y1 - 2009/06/18/ PY - 2009/04/02/received PY - 2009/06/05/revised PY - 2009/06/11/accepted PY - 2009/7/11/entrez PY - 2009/7/11/pubmed PY - 2010/1/20/medline SP - 665 EP - 70 JF - Journal of hazardous materials JO - J Hazard Mater VL - 171 IS - 1-3 N2 - This paper describes a study of the sorptive removal of arsenate (As(V)) from aqueous solutions by synthetically prepared Mg-Fe-based hydrotalcites (FeHT) as layered double hydroxide (LDH) adsorbents. The synthesis of Fe(3+)-substituted hydrotalcites (FeHT) with the chemical formula [Mg(II)(6)Fe(III)(2)(OH)(16)](2+)[CO(3)xyH(2)O](2-) was achieved by a co-precipitation method. The reaction products were characterized by powder X-ray diffraction analysis. The influences of solution pH, initial arsenate (As(V)) concentration, and sorbent concentration were investigated in multiple kinetic runs. The adsorption rates and isotherms were investigated in batch experiments. The pseudo-first-order and second-order kinetic models were tested and the latter was found to fit better to the experimental data. Langmuir and Freundlich isotherms were used to describe the adsorption data from equilibrium experiments. The results have shown that FeHT has a high arsenate removal efficiency, with the ability to reduce the concentration of arsenate in the aqueous solution from an initial value of 330 microg/l to <10 microg/l (i.e. below the limit value specified by WHO). SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/19589641/Adsorption_of_As_V__from_water_using_Mg_Fe_based_hydrotalcite__FeHT__ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(09)00974-1 DB - PRIME DP - Unbound Medicine ER -