Adsorption removal of pefloxacin from water by halloysite nanotubes

Cong-Liang Zhang; Shu-Jie Cui; Yan Wang

Journal of Industrial and Engineering Chemistry, Vol.23, 12-15, March, 2015

DOI10.1016/j.jiec.2014.08.005 Export Citation

Adsorption removal of pefloxacin from water by halloysite nanotubes

Cong-Liang Zhang^†, Shu-Jie Cui, and Yan Wang

College of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China

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Batch adsorption experiments were carried out for the removal of pefloxacin from water using halloysite nanotubes as adsorbent. The effects of various parameters such as contact time, initial solution concentration and temperature on the adsorption system were investigated. The optimum contact time was found to be 100 min. The isotherm adsorption data fit well with Freundlich model, and the kinetic data fit well with the pseudo-second order and the intra-particle diffusion model. Intra-particle diffusion analysis demonstrates that pefloxacin diffuses quickly among the particles at the beginning of the adsorption process, and then the diffusion slows down and stabilizes. Thermodynamic parameters such as ΔG, ΔH and ΔS were also calculated. The negative Gibbs free energy change and the positive enthalpy change indicated the spontaneous and endothermic nature of the adsorption, and the positive entropy change indicated that the adsorption process was aided by increased randomness.

Keywords:Halloysite nanotube;Pefloxacin;Adsorption isotherm;Kinetic model

[References]

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Dorival-Garcıa N, Zafra-Gomeza A, Navalona A, Gonzalezb J, Vılchez JL, Sci. Total Environ., 442, 317 (2013)
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Alkan M, Demirbas O, Celikcapa S, Dogan M, J. Hazard. Mater., 116(1-2), 135 (2004)
Gupta VK, Ali I, J. Colloid Interface Sci., 271(2), 321 (2004)
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Gupta VK, Mittal A, Krishnan L, Gajbe V, Sep. Purif. Technol., 40(1), 87 (2004)
Ugurlu M, Microporous Mesoporous Mater., 119, 276 (2004)

[Referenced By]

[1] Kay P, Blackwell PA, Boxall ABA, Environ. Pollut., 134, 333 (2005)

[2] Dorival-Garcıa N, Zafra-Gomeza A, Navalona A, Gonzalezb J, Vılchez JL, Sci. Total Environ., 442, 317 (2013)

[3] Li HQ, Huang GH, An CJ, Zhang WX, Chem. Eng. J., 200-202, 275 (2012)

[4] Singh N, J. Hazard. Mater., 168(1), 233 (2009)

[5] Tan H, Liu GZ, Yan YB, Gong JL, Environ. Prot. Eng., 38, 79 (2012)

[6] Wang SB, Ma Q, Zhu ZH, Fuel, 87(15-16), 3469 (2008)

[7] Wu QF, Li ZH, Hong HL, Yin K, Tie LY, Appl. Clay Sci., 50, 204 (2010)

[8] Yuan P, Southon PD, Liu Z, Green MER, Hook JM, Antill SJ, Kepert CK, J. Phys. Chem., 112, 15742 (2008)

[9] Lvov YM, Shchukin DG, Mohwald H, Price RR, ACS Nano, 2, 814 (2008)

[10] Vergaro V, Abdullayev E, Lvov YM, Zeitoun A, Cingolani R, Rinaldi R, Leporatti S, Biomacromolecules, 11(3), 820 (2010)

[11] Diaz-Cruz MS, de Alda MJL, Barcelo D, Trac-Trend Anal. Chem., 22, 340 (2003)

[12] Gaboriau H, Saada A, Chemosphere, 44, 1633 (2001)

[13] Alkan M, Demirbas O, Celikcapa S, Dogan M, J. Hazard. Mater., 116(1-2), 135 (2004)

[14] Gupta VK, Ali I, J. Colloid Interface Sci., 271(2), 321 (2004)

[15] Zhang GC, Fei ZH, Ion Exch. Adsorpt., 18, 536 (2002)

[16] Gupta VK, Mittal A, Krishnan L, Gajbe V, Sep. Purif. Technol., 40(1), 87 (2004)

[17] Ugurlu M, Microporous Mesoporous Mater., 119, 276 (2004)