Arsenic removal from aqueous solutions with Fe-hydrotalcite supported magnetite nanoparticle

T. Turk; I. Alp

Journal of Industrial and Engineering Chemistry, Vol.20, No.2, 732-738, March, 2014

DOI10.1016/j.jiec.2013.06.002 Export Citation

Arsenic removal from aqueous solutions with Fe-hydrotalcite supported magnetite nanoparticle

T. Turk^†, and I. Alp

Dept. of Mining Engineering, Karadeniz Technical University, 61080 Trabzon, Turkey

E-mail:

The sorptive removal of arsenic from water by synthetically-prepared magnetic Fe-hydrotalcite (MFeHT) seeding by nano magnetite was investigated. The synthesis of M-FeHT was achieved by a coprecipitation method. M-FeHT was characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), and magnetic susceptibility analysis. Batch tests were conducted to investigate the removal mechanism of As(III) and As(V) by M-FeHT. Kinetic studies revealed that uptake of As(V) (95% removal) and As(III) ions occurs rapidly within the first 15 min, and slows thereafter. The adsorption data follow a pseudo-second-order kinetic model and fit the Langmuir isotherm well. The experimental results show that stable arsenic removal efficiency, and the capability to reduce As levels, make M-FeHT a suitable adsorbent for the treatment of As-polluted waters. After adsorption, tests were conducted with magnetic separation to determine the separability of M-FeHT from solution. At magnetic field intensity of 2 T, the efficiency of M-FeHT separation was 91%. Finally, after adsorption by M-FeHT, residual arsenic concentration decreased to less than 10 μg/L (i.e., below the threshold specified by the WHO). Fehydrotalcite-supported magnetite nanoparticles were not only more efficient in the removal of As but also in recovery by the magnetic separator.

Keywords:Arsenic removal;Adsorption;Magnetic adsorbent;Layered double hydroxide (LDH);Seeding

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[Referenced By]

[1] Luengo C, Brigante M, Avena M, J. Colloid Interface Sci., 311(2), 354 (2007)

[2] Qiu W, Zheng Y, J. Hazard., 148(3), 721 (2007)

[3] Ng JC, Wang J, Shraim A, Chemosphere, 52, 1353 (2003)

[4] Zhenzhong L, Huiping D, Jian Z, Res. Environ., 5, 23 (2007)

[5] Zhang W, Singh P, Paling E, Delides S, Miner. Eng., 17(4), 517 (2004)

[6] Chakraborty S, Wolthers M, Chatterjee D, Charlet L, J. Colloid Interface Sci., 309(2), 392 (2007)

[7] Oliveira LCA, Rios RVRA, Fabris JD, Garg VK, Sapag K, Lago VRM, Carbon, 40, 2177 (2002)

[8] Oliveira LCA, Rios RVRA, Fabris JD, Sapag K, Garg VK, Lago VRM, Appl. Clay Sci., 22, 169 (2003)

[9] Zhang F, Hideaki I, Chemosphere, 60, 319 (2005)

[10] Gillman GP, Sci. Total, 366, 926 (2006)

[11] Yang L, Shahrivari Z, Liu PKT, Sahimi M, Tsotsis TT, Ind. Eng. Chem. Res., 44(17), 6804 (2005)

[12] Yang L, Dadwhal M, Shahrivari Z, Ostwal M, Liu PKT, Sahimi M, Tsotsis TT, Ind. Eng. Chem. Res., 45(13), 4742 (2006)

[13] Goh KH, Lim TT, Dong Z, Water Res., 42, 1343 (2008)

[14] Turk T, Alp I, Deveci H, J. Hazard. Mater., 171(1-3), 665 (2009)

[15] Turk T, Alp I, Deveci H, J. Environ. Eng.-ASCE, 136, 399 (2010)

[16] WHO, Arsenic and Arsenic Compounds, 2nd edition, World Health Organization, Geneva, 2001. (2001)

[17] Yamaura M, Camilo RL, Sampaio LC, Macedo MA, Nakamura M, Toma HE, J. Magn. Magn., 279, 210 (2004)

[18] Oliveira LC, Petkowicz DI, Smaniotto A, Pergher SB, Water Res., 38, 3699 (2004)

[19] Peng X, Luan Z, Zhang H, Chemosphere, 63, 300 (2006)

[20] Yuan P, Fan M, Yang D, He H, Liu D, Yuan A, Zhu JX, Chen T, J. Hazard. Mater., 28, 1113 (2009)

[21] Stopa LCB, Yamaura M, Int. J. Nucl. Energ. Sci. Technol., 5, 283 (2010)

[22] Mou F, Guan J, Xiao Z, Sun Z, Shi W, Fan X, J. Mater. Chem., 21, 5414 (2011)

[23] Mou F, Guan J, Xiao Z, Sun Z, Shi W, Fan X, J. Mater. Chem., 4, 3987 (2012)

[24] Chang W, Jones H, Valsami JE, Garelick H, CARE Annual General Meeting, 15 September, Greenwich, (2007), pp. 1.8. (2007)

[25] Dearing JA, in: Walden J, Smith JP, Oldfield F (Eds.), Environmental Magnetism A Practical Guide. Technical Guide, No. 6, Quaternary Research Association, London, 1999. (1999)

[26] Veli S, Alyuz B, J. Hazard. Mater., 149(1), 226 (2007)

[27] Kundu S, Gupta AK, J. Hazard. Mater., 142(1-2), 97 (2007)

[28] Kovanda F, Kovacsova E, Kolousek D, Collect. Czech. Chem. Commun., 64, 1517 (1999)

[29] Hassoy H, Investigation of the Relationship between Operational Parameters and Separation Performance in Rare Earth Permanent Magnet Roll Type Dry Magnetic Separator, Hacettepe University, Ankara, 2007, PhD Thesis. (2007)

[30] Shahrivari Z, Removal of Trace Levels of Arsenic and Selenium from Aqueou Solutions by Calcined and Uncalcined Layered Double Hydroxide (LDH), University of Southern California, 2005 Msc Thesis. (2005)