Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Removal Characteristics of Cu(II) by PSf/D2EHPA/CNT Beads Prepared by Immobilization of Carbon Nanotubes (CNT) and Di-(2-ethylhexyl)-phosphoric acid (D2EHPA) on Polysulfone (PSf)

Polysulfone으로 carbon nanotubes (CNT)와 di-(2-ethylhexyl)-phosphoric acid (D2EHPA)를 고정화한 PSf/D2EHPA/CNT 비드에 의한 Cu(II)의 제거특성

  • Lee, Chang-Han (Department of Environmental Adminstration, Catholic University of Pusan) ;
  • Lee, Min-Gyu (Department of Chemical Engineering, Pukyong National University)
  • 이창한 (부산가톨릭대학교 환경행정학과) ;
  • 이민규 (부경대학교 화학공학과)
  • Received : 2016.08.01
  • Accepted : 2016.09.30
  • Published : 2016.11.30
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Abstract

PSf/D2EHPA/CNT beads were prepared by immobilizing di-(2-ethylhexyl)-phosphoric acid (D2EHPA) and carbon nanotubes (CNT) on polysulfone (PSf) and used to remove Cu(II) from aqueous solutions. Optimum pH was in the range of 4 to 6. The removal kinetic of Cu(II) by the prepared PSf/D2EHPA/CNT beads was mainly governed by internal diffusion, and the diffusion coefficient of Cu(II) by PSf/D2EHPA/CNT beads was found to be $2.19{\times}10^{-4}{\sim}2.64{\times}10^{-4}cm^2/s$. The Langmuir isotherm model predicted the experimented data well. The maximum removal capacity of Cu(II) obtained from this isotherm was 7.32 mg/g. Calculated thermodynamic parameters such as ${\Delta}G^o$, ${\Delta}H^o$ and ${\Delta}S^o$ showed that the adsorption of Cu(II) ions onto PSf/D2EHPA/CNT beads was feasible, spontaneous and endothermic at 293-323 K.

Keywords

References

  1. Arslan, G., Tor, A., Cengeloglu, Y., Ersoz, M., 2009, Facilitated transport of Cr(III) through activated composite membrane containing di-(2-ethylhexyl) phosphoric acid(DEHPA) as carrier agent, J. Hazard. Mater., 165(1-3), 729-735. https://doi.org/10.1016/j.jhazmat.2008.10.050
  2. Belkhouche, N. E., Didi, M. A., Vellemin, D., 2005, Separation of nickel and copper by solvent extraction using di-2-ethylhexylphosphoric acid-based synergistic mixture, Solvent Extr. Ion Exc., 23(5), 677-693. https://doi.org/10.1081/SEI-200066290
  3. Chen, C., Wang, W., 2006, Adsorption of Ni(II) from aqueous solution using oxidized multiwall carbon nanotubes, Ind. Eng. Chem. Res., 45(26), 9144-9149. https://doi.org/10.1021/ie060791z
  4. Ciopec, M., Davidescu, C. M., Negrea, A., Lupa, L., Negrea, P., Popa, A., 2011, Di-2-ethylhexyl phosphoric acid immobilization with polysulfone microcapsules for Cu(II) extraction, Chem. Bull., 56, 43-46.
  5. Hac-Wydro, K., Wydro, P., Dynarowicz-Latka, P., 2008, Metal ions binding to tri-n-octylphosphine oxide (TOPO) monolayer spread at the air/water interface, Thin Solid Films, 516(24), 8839-8843. https://doi.org/10.1016/j.tsf.2007.11.055
  6. Kam, S. K., Jeon, J. W., Lee, M. G., 2014, Removal of Cu(II) and Pb(II) by solid-phase extractant prepared by immobilizing D2EHPA with polysulfone, J. Environ. Sci. Int., 23(11), 1843-1850. https://doi.org/10.5322/JESI.2014.23.11.1843
  7. Li, Y. H., Di, Z., Ding, J., Wu, D., Luan, Z., Zhu, Y., 2005, Adsorption thermodynamic, kinetic and desorption studies of $Pb^{2+}$ on carbon nanotubes, Water Res., 39(4), 605-609. https://doi.org/10.1016/j.watres.2004.11.004
  8. Li, Y. H., Wang, S., Luan, Z., Ding, J., Xu, C., Wu, D., 2003, Adsorption of cadmium (II) from aqueous solution by surface oxidized carbon nanotubes, Carbon, 41(5), 1057-1062. https://doi.org/10.1016/S0008-6223(02)00440-2
  9. Mishra, S., Devi, N., 2011, Extraction of copper(II) from hydrochloric acid solution by Cyanex 921, Hydrometallurgy, 107(1-2), 29-33. https://doi.org/10.1016/j.hydromet.2010.12.016
  10. Naiya, T. K., Bhattacharya, A. K., Das, S. K., 2008, Removal of Cd(II) from aqueous solutions using clarified sludge, J. Colloid Int. Sci., 325(1), 48-56. https://doi.org/10.1016/j.jcis.2008.06.003
  11. Ochoa, N. A., Illanes, C., Marchese, J., Basualto, C., Valenzuela, F., 2006, Preparation and characterization of polymeric microspheres for Cr(VI) extraction, Sep. Purif. Technol., 52(1), 39-45. https://doi.org/10.1016/j.seppur.2006.03.012
  12. Ren, Z., Zhang, W., Meng, H., Liu, Y. M., Dai, Y., 2007, Extraction equilibria of copper(II) with D2EHPA in kerosene from aqueous solutions in acetate buffer media, J. Chem. Eng. Data, 52(2), 438-441. https://doi.org/10.1021/je060370o
  13. Salehia, E., Madaenia, S. S., Rajabib, L., Vatanpoura, V., Derakhshanb, A. A., Zinadinia, S., Sh. Ghorabib, S., Ahmadi Monfareda, H., 2012, Novel chitosan/poly (vinyl) alcohol thin adsorptive membranes modified with amino functionalized multi-walled carbon nanotubes for Cu(II) removal from water: Preparation, characterization, adsorption kinetics and thermodynamics, Sepa. Purif. Tech., 89(22), 309-319. https://doi.org/10.1016/j.seppur.2012.02.002
  14. Seyfi, S., Abdi, M., 2009, Extraction of titanium(IV) from acidic media by tri-n-butyl phosphate in kerosene, Miner. Eng., 22(2), 116-118. https://doi.org/10.1016/j.mineng.2008.05.003
  15. Senthilkumaar, S., Kalaamani, P., Subburaam, C. V., 2006, Liquid phase adsorption of crystal violet onto activated carbons derived from male flowers of coconut tree, J. Hazard. Mater., 136(3), 800-808. https://doi.org/10.1016/j.jhazmat.2006.01.045
  16. Sitko, R., Zawisza, B., Malicka, E., 2012, Modification of carbon nanotubes for preconcentration, separation and determination of trace-metal ions, Trends in Analytical Chemistry, 37(7-8), 22-31. https://doi.org/10.1016/j.trac.2012.03.016
  17. Tofighy, M. A., Mohammadi, T., 2010, Salty water desalination using carbon nanotube sheets, Desalination, 258(1-3), 182-186. https://doi.org/10.1016/j.desal.2010.03.017
  18. Vellaichamy, S., Palanivelu, K., 2011, Preconcentration and separation of copper, nickel and zinc in aqueous samples by flame atomic absorption spectrometry after column solid-phase extraction onto MWCNTs impregnated with D2EHPA-TOPO mixture, J. Hazard. Mater., 185(2-3), 1131-1139. https://doi.org/10.1016/j.jhazmat.2010.10.023
  19. Wu, C. H., 2007, Studies of the equilibrium and thermodynamics of the adsorption of $Cu^{2+}$ onto as-produced and modified carbon nanotubes, J. Col. Inter. Sci., 311(2), 338-346. https://doi.org/10.1016/j.jcis.2007.02.077
  20. Yang, W. W., Luo, G. S., Wu, F. Y., Chen, F., Gong, X. C., 2004, Di-2-ethylhexyl phosphoric acid immobilization with polysulfone microcapsules, React. Funct. Polym., 61(1), 91-99. https://doi.org/10.1016/j.reactfunctpolym.2004.04.002
  21. Yang, W. W., Luo, G. S., Gong, X. C., 2005, Extraction and separation of metal ions by a column packed with polystyrene microcapsules containing Aliquat 336, Sep. Purif. Technol., 43(2), 175-182. https://doi.org/10.1016/j.seppur.2004.08.007
  22. You, H. N., Lee, M. G., 2014, Preparation of PVA gel beads by immobilization of HTTA and TOPO on PVA as solid phase extractant and removal characteristics of $Cu^{2+}$ from aqueous solution, Clean Technol., 20(3), 251-255. https://doi.org/10.7464/ksct.2014.20.3.251
  23. Yu, B., Zhang, Y., Shukla, A., Shukla, S. S., Dorris, K. L., 2000, The removal of heavy metal from aqueous solutions by sawdust adsorption-removal of copper, J. Hazard. Mater., 80(1-3), 33-42. https://doi.org/10.1016/S0304-3894(00)00278-8