Kinetic studies of Pb and Ni adsorption onto MCM-41 amine-functionalized nano particle

Document Type : Research Paper

Authors

1 Chehel magham street, Aley 6, No. 72

2 Ferdowsi University of Mashhad

Abstract

In the current investigation a novel nano hybrid adsorbent MCM-41/N-(3-trimethoxysilyl)-propyl)diethylenetriamine (MCM-41/TMSPDETA) was prepared and was characterized using DLS (Dynamic Light Scattering), Fourier Transform Infrared (FTIR), X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET) analytical techniques and Transmission electron microscopy (TEM). The synthesized MCM-41/TMSPDETA adsorbent possessed high surface area (867 m2g−1), narrow pore size distribution (3.6 nm) and pore volume (0.782 cm3g−1). The nano hybrid adsorbent was applied in batch experiments under different controlling factors by varing pH, contact time and solution temperature of Lead (Pb(II)) and Nickel (Ni(II)) ions. Optimum conditions obtained were 20°C, pH=6 and contact time of 120 min. The maximum capacity of the nano-sorbent was obtained to be 58.823 and 20.921 mg g−1 for Pb (II) and Ni (II) ions for an initial concentration range 10-70 mgL-1. Pseudo-first order, pseudo-second order and intraparticle diffusion models were used to analyze the kinetic data. Results showed that the pseudo-second order model can well describe the adsorption kinetic data.

Keywords

Main Subjects


[1] Freitas, O. M., Martins, R. J., Delerue-Matos, C. M., Boaventura, R. A. (2008). Removal of Cd (II), Zn (II) and Pb (II) from aqueous solutions by brown marine macro algae: kinetic modelling. Journal of hazardous materials, 153(1), 493-501.
[2] Paulino, A. T., Santos, L. B., Nozaki, J. (2008). Removal of Pb 2+, Cu 2+, and Fe 3+ from battery manufacture wastewater by chitosan produced from silkworm chrysalides as a low-cost adsorbent. Reactive and functional polymers68(2), 634-642.
[3] Mellah, A., Chegrouche, S., Barkat, M. (2007). The precipitation of ammonium uranyl carbonate (AUC): thermodynamic and kinetic investigations. Hydrometallurgy, 85(2), 163-171.
[4] Kornilovich, B. Y., Koval'chuk, I. A., Pshinko, G. N., Tsapyuk, E. A., Krivoruchko, A. P. (2000). Water Treatment and Demineralization Technology-Water purification of uranium by the method of ultrafiltration. Journal of Water chemistry and technology, 22(1), 43-47.
[5] Shoushtari, A. M., Zargaran, M., Abdouss, M. (2006). Preparation and characterization of high efficiency ion‐exchange crosslinked acrylic fibers. Journal of applied polymer science101(4), 2202-2209.
[6] de Pablo, L., Chávez, M. L., Abatal, M. (2011). Adsorption of heavy metals in acid to alkaline environments by montmorillonite and Ca-montmorillonite. Chemical engineering journal171(3), 1276-1286.
[7] Babel, S., Kurniawan, T. A. (2003). Low-cost adsorbents for heavy metals uptake from contaminated water: a review. Journal of hazardous materials,97(1), 219-243.
[8] Hawari, A. H., Mulligan, C. N. (2006). Biosorption of lead (II), cadmium (II), copper (II) and nickel (II) by anaerobic granular biomass. Bioresource technology97(4), 692-700.
[9] Zolfaghari, G., Esmaili-Sari, A., Anbia, M., Younesi, H., Amirmahmoodi, S., Ghafari-Nazari, A. (2011). Taguchi optimization approach for Pb (II) and Hg (II) removal from aqueous solutions using modified mesoporous carbon.Journal of hazardous materials192(3), 1046-1055.
[10] Thomas, J. M. (1994). The chemistry of crystalline sponges. Nature, 368(6469), 289-290.
[11] Zhou, L., Wang, Y., Liu, Z., Huang, Q. (2009). Characteristics of equilibrium, kinetics studies for adsorption of Hg (II), Cu (II), and Ni (II) ions by thiourea-modified magnetic chitosan microspheres. Journal of hazardous materials161(2), 995-1002.
[12] Alkan, M., Demirbaş, Ö., Doğan, M. (2007). Adsorption kinetics and thermodynamics of an anionic dye onto sepiolite. Microporous and mesoporous materials, 101(3), 388-396.