Removal of Phenol from Aqueous Solutions by Adsorption onto Amine-Modified Fly Ash Cenospheres (FACs)

Abstract:

Removal of phenols from waters and wastewaters is an important issue in order to protect public health and environment. In an effort to develop an effective adsorbent for removal of phenol from aqueous solutions, fly ash cenospheres (FACs), the solid wastes generated from a coal-firing power plant, were modified with an amino-terminated organosilicon (γ-aminopropyltriethoxysilane, KH550). Surface properties of the KH550-modified FACs (M-FACs) were characterized by the X-ray diffraction (XRD), the scanning electron microscopy (SEM) and X-ray photoelectron spectra (XPS). The characterized results showed that KH550 was successfully grated on the surface of FACs. The effects of various experimental parameters such as solution pH, adsorbent dose, and temperature upon the phenol adsorption onto M-FACs were evaluated. The results showed solution pH had a major impact on the phenol adsorption onto M-FACs, the optimum phenol removal was observed around pH 7-9. The kinetic studies indicated that the adsorption process was best described by the pseudo-second-order kinetics, suggesting that the mainly phenol adsorption process was predominantly controlled by chemical process. M-FACs presented more than double adsorptive capacity as compared with FACs. The adsorption capacity of the regenerated adsorbents could still be maintained at 83% by the fourth adsorption-desorption cycle.

• Periodical: Advanced Materials Research (Volume 878)
• Pages: 226-233
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.878.226
• Online since: January 2014
• Authors: Yu Xin Sun, Jin Zhang
• Keywords: Adsorption, Fly Ash Cenospheres (FACs), Phenol, Surface Modification

References

[1] M. Sarkar, P.K. Acharya, Use of fly ash for the removal of phenol and its analogues from contaminated water, Waste Manage. 26 (2006) 559-570.

DOI: 10.1016/j.wasman.2005.12.016

[2] R.C. Wang, C.W. Yu, Ultrason. Sonochem. 20 (2013) 553-564.

[3] W. Li, S. Liu, Bifunctional activated carbon with dual photocatalysis and adsorption capabilities for efficient phenol removal, Adsorption. 18 (2012) 67-74.

DOI: 10.1007/s10450-011-9381-z

[4] Y.Y. Gao, H.H. Gan, G.K. Zhang, Y.D. Guo, Visible light assisted Fenton-like degradation of rhodamine B and 4-nitrophenol solutions with a stable poly-hydroxyl-iron/sepiolite catalyst. Chem. Eng. J. 217 (2013) 221-230.

DOI: 10.1016/j.cej.2012.11.115

[5] B.S. Xing, W.B. McGIII, M.J. Dudas, Sorption of Phenol by Selected Biopolymers: Isotherms, Energetics, and Polarity. Environ. Sci. Technol. 28 (1994) 466-473.

DOI: 10.1021/es00052a019

[6] S.P. Kamble, P.A. Mangrulkar, A.K. Bansiwal, S.S. Rayalu, Adsorption of phenol and o-chlorophenol on surface altered fly ash based molecular sieves, Chem. Eng. J. 138 (2008) 73-83.

DOI: 10.1016/j.cej.2007.05.030

[7] Y. Li, X.P. Gao, H.W. Wu, Further Investigation into the Formation Mechanism of Ash Cenospheres from an Australian Coal-Fired Power Station, Energy & Fuels. 27 (2013) 811-815.

DOI: 10.1021/ef3020553

[8] C. Pereira, A.R. Silva, A.P. Carvalho, J. Pires, C. Freire, J. Mol. Catal. A: Chem. 283 (2008) 5.

[9] L.X. Zhang, Q.Z. Jin, J.H. Huang, Y.F. Liu, L. Shan, X.G. Wang, Modification of palygorskite surface by organofunctionalization for application in immobilization of H3PW12O40. Appl. Surf. Sci. 256 (2010) 5911-5917.

DOI: 10.1016/j.apsusc.2010.03.073

[10] B. Wang, Q. Li, J.F. Kang, J.F. Pang, W. Wang, J.P. Zhai, Preparation and characterization of polypyrrole coating on fly ash cenospheres: role of the organosilane treatment. J. Phys. D: Appl. Phys. 44 (2011) 403-411.

DOI: 10.1088/0022-3727/44/41/415301

[11] J. Zhang, H. Cui, B. Wang, C. Li, J.P. Zhai, Q. Li, Fly ash cenospheres supported visible-light-driven BiVO4 photocatalyst: Synthesis, characterization and photocatalytic application, Chem. Eng. J. Vol. 223 (2013) 737-746.

DOI: 10.1016/j.cej.2012.12.065

[12] J.F. Pang, Q. Li, B. Wang, D.J. Tao, X.T. Xu, W. Wang, J.P. Zhai, Preparation and characterization of electroless Ni-Fe-P alloy films on fly ash cenospheres, Powder Technol. 226 (2012) 246-252.

DOI: 10.1016/j.powtec.2012.04.055

[13] P.K. Surolia, R.J. Tayade, R.V. Jasra, TiO2-coated cenospheres as catalysts for photocatalytic degradation of methylene blue, p-Nitroaniline, n-Decane, and n-Tridecane under solar irradiation. Ind. Eng. Chem. Res. 49 (2010) 8908-8919.

DOI: 10.1021/ie100388m

[14] Z.C. Kang, Z.L. Wang, On accretion of nanosize carbon spheres, J. Phys. Chem. 100 (1996) 5163–5165.

DOI: 10.1021/jp9535809

[15] B. Shah, C. Mistry, A. Shah, Seizure modeling of Pb(II) and Cd(II) from aqueous solution by chemically modified sugarcane bagasse fly ash: isotherms, kinetics, and column study. Environ. Sci. Pollut. Res. 20 (2013) 2193-2209.

DOI: 10.1007/s11356-012-1029-3

[16] H.B. Senturk, D. Ozdes, A. Gundogdu, C. Duran, M. Soylak, Removal of phenol from aqueous solutions by adsorption onto organomodified Tirebolu bentonite: Equilibrium, kinetic and thermodynamic study, J. Hazard. Mater. 172 (2009) 353-362.

DOI: 10.1016/j.jhazmat.2009.07.019

[17] V.C. Srivastava, M.M. Swamy, I.D. Mall, B. Prasad, I.M. Mishra, Adsorptive removal of phenol by bagasse fly ash and activated carbon: equilibrium, kinetics and thermodynamics, Colloids Surf. A 272 (2006) 89-104.

DOI: 10.1016/j.colsurfa.2005.07.016

[18] U. F. Alkaram, A.A. Mukhlis, A.H. Al-Dujaili, The removal of phenol from aqueous solutions by adsorption using surfactant-modified bentonite and kaolinite, J. Hazard. Mater. 169 (2009) 324-332.

DOI: 10.1016/j.jhazmat.2009.03.153

[19] J.H. Wang, X.J. Han, H.R. Ma, Y.F. Ji, L.J. Bi, Adsorptive removal of humic acid from aqueous solution on polyaniline/attapulgite composite, Chem. Eng. J. 173 (2011) 171-177.

DOI: 10.1016/j.cej.2011.07.065

[20] T. Anirudhan, P. Suchithra, S. Rijith, Amine-modified polyacrylamide-bentonite composite for the adsorption of humic acid in aqueous solutions, Colloid Surf. A. 326 (2008) 147-156.

DOI: 10.1016/j.colsurfa.2008.05.022

[21] G. Mckay, H.S. Blair, J.R. Gardener, Adsorption of dyes on chitin I. Equilibrium studies. J. Appl. Polym. Sci. 27 (1982) 3043-3057.

DOI: 10.1002/app.1982.070270827