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Cadmium sorption properties of poly(vinyl alcohol)/hydroxyapatite cryogels: I. kinetic and isotherm studies

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Abstract

A new adsorbent for removing heavy metal ions from wastewater, poly(vinyl alcohol)/hydroxyapatite(PVA/HAp) composite cryogel, has been investigated. The PVA/HAp cryogel was prepared through a clean process by using water and freeze-thawing. The PVA/HAp cryogel is provided with interconnected macropores varying from 0.1 um to several um and well dispersed and immobilized HAp in cryogel. Batch experiments of cadmium sorption were carried out to test the sorption ability of PVA/HAp cryogel. The isotherm and kinetics of cadmium sorption were studied by fitting the experimental results to isotherm and kinetics models. The Langmuir isotherm suitable for this system shows the maximum sorption capacity of 53.3 mg/g. For kinetics, the double-exponential model presents best fit compared with pseudo-first-order and pseudo-second-order models. The double-exponential model indicates a diffusion-controlled and a two-step mechanism.

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References

  1. Kay MI, Young RA, Posner AS (1964) Nature 204:1050

    Article  CAS  Google Scholar 

  2. Lim GK, Wang J, Ng SC, Chew CH, Gan LM (1997) Biomaterials 18:1433

    Article  CAS  Google Scholar 

  3. Sugiyama S, Fujii M, Hayashi H, Kusakabe K (2004) Inorg Chem Commun 7:569

    Article  CAS  Google Scholar 

  4. Zhao YF, Ma J (2005) Micropor Mesopor Mat 87:110

    Article  CAS  Google Scholar 

  5. Okazaki M, Yoshida Y, Yamaguchi S, Kaneno M, Elliott JC (2001) Biomaterials 22:2459

    Article  CAS  Google Scholar 

  6. Zhu KJ, Yanagisawa K, Shimanouchi R, Onda A, Kajiyoshi K (2005) J Eur Ceram Soc 36:509

    Google Scholar 

  7. Vega ED, Pedregosa JC, Narda GE, Morando PJ (2003) Water Res 37:1976

    Article  Google Scholar 

  8. Gómez del Río JA, Morando PJ, Cicerone DS (2004) J Environ Manage 71:169

    Article  Google Scholar 

  9. Ribeiro CC, Gibson I, Barbosa MA (2006) Biomaterials 27:1749

    Article  CAS  Google Scholar 

  10. Riman RE, Suchanek WL, Byrappa K, Chen CW, Shuk P, Oakes CS (2002) Solid State Ionics 151:393

    Article  CAS  Google Scholar 

  11. Tsutsumi H, Shibasaki Y, Onimura K, Oishi T (2003) Polymer 44:6297

    Article  CAS  Google Scholar 

  12. Lozinsky VI, Galaev IY, Plieva FM, Savina IN, Jungvid H, Mattiasson B (2003) Trends Biotechnol 21:445

    Article  CAS  Google Scholar 

  13. Lozinsky VI, Plieva FM (1998) Enzyme Microb Tech 23:227

    Article  CAS  Google Scholar 

  14. Chiron N, Guilet R, Deydier E (2003) Water Res 37:3079

    Article  CAS  Google Scholar 

  15. Benhammou A, Yaacoubi A, Nibou L, Tanouti BJ (2005) Colloid Interf Sci 282:320

    Article  CAS  Google Scholar 

  16. Al-Asheh S, Banat F, Al-Omari R, Duvnjak Z (2000) Chemosphere 41:59

    Article  Google Scholar 

  17. Ho YS, Huang CT, Huang HW (2002) Process Biochem 37:1421

    Article  CAS  Google Scholar 

  18. van Hullebusch ED, Peerbolte A, Zandvoort MH, Lens PNL (2005) Chemosphere 58:493

    Article  Google Scholar 

  19. Ho YS, Chiang CC (2001) Adsorption 7:139

    Article  CAS  Google Scholar 

  20. Hall KR, Eagleton LC, Acrivos A, Vermeulen T (1966) Ind Eng Chem Fund 5:212

    Article  CAS  Google Scholar 

Download references

Acknowledgement

This work was supported by grant No. RTI04-01-04 from the Regional Technology Innovation Program of the Ministry of Commerce, Industry, and Energy (MOCIE).

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Authors and Affiliations

  1. School of Advanced Materials and System Engineering, Kumoh National Institute of Technology, Gumi, 730-701, Korea

    Xiao Wang & Byung Gil Min

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  1. Xiao Wang
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  2. Byung Gil Min
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Correspondence to Byung Gil Min.

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Wang, X., Min, B.G. Cadmium sorption properties of poly(vinyl alcohol)/hydroxyapatite cryogels: I. kinetic and isotherm studies. J Sol-Gel Sci Technol 43, 99–104 (2007). https://doi.org/10.1007/s10971-007-1548-4

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  • DOI: https://doi.org/10.1007/s10971-007-1548-4

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