INFLUENCE OF CYANIDE ON REMOVAL OF COPPER ION FROM THE SOLUTION BY PHOTOCATALYTIC REDUCTION METHOD WITH TiO2 SUSPENSION

https://doi.org/10.22146/ijc.21477

Endang Tri Wahyuni(1*), Mudasir Mudasir(2), Tania Avia Gusman(3)

(1) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara POB.Bls. 21 Yogyakarta 55281
(2) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara POB.Bls. 21 Yogyakarta 55281
(3) Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Sekip Utara POB.Bls. 21 Yogyakarta 55281
(*) Corresponding Author

Abstract


The removal of Cu(II) by photoreduction method using TiO2 photocatalyst in the presence of CN- is reported. Photoreduction was carried by batch technique using UV lamp with 290-350 nm of wavelength. The research results indicate that the present of CN- ion gives different effects on the photoreduction effectiveness depends on the mole ratio of both ions. The addition of CN- less than 2 moles for each mole of Cu (II) ion can improve the photoreduction, and the photoreduction sharply goes down into very low degree when the mole number of CN- is increased up to 4, and by further enlarging the mole number into 6, the photoreduction degree remains constant. Furthermore, increasing solution pH generally leads to a decrease in the photoreduction. In the solution with pH 1, the maximal photoreduction degree is reached, while increasing pH from 1 to 9 has declined the photoreduction, and the photoreduction is totally inhibited at pH higher than 9. The effect of the solution pH is related with the speciation of Cu (II), CN- and TiO2 in the solution.


Keywords


Photoreduction; copper; cyanide; TiO2 photocatalyst

Full Text:

Full Text Pdf


References

[1] Manahan, S.E., 2000, Environmental Chemistry, 7th ed., Lewish Publisher, New York.

[2] Ouki, S.K., and Kavannagh, M., 1997, Waste Manage. Res., 15, 383-394.

[3] Hoffmann, M.R., Martin, S.T., Choi, W., and Bahnemann, D.W., 1995, Chem. Rev., 95, 69-96.

[4] Alemany, L.J., Banares, M.A., Pardo, E., Martin, F., Galan-Fereres, M., and Blasco, M.J., 1997, Appl. Catal., B, 13, 289-297.

[5] Wang, X., Pehkonen, S.O., and Ray, A.K., 2004, Electrochim. Acta, 49, 1435-1444

[6] Wahyuni, E.T., Trisunaryanti, W., Sugiharto, E., and Mudasir, 2006, Photocatalytic Activity of FeO-Zeolite for p-Chlorophenol degradation, Penang International Conference for Young Chemists (ICYC2006), Penang Malaysia, 24-27 May 2006.

[7] Chen, D., and Ray, A.K., 2001, Chem. Eng. Sci., 56, 1561-1570.

[8] Wahyuni, E.T., and Mudasir, The Removal of Hg(II) Ion from Solution by Photocatalytic Reduction using TiO2 Photocatalyst, The 2nd Penang International Conference for Young Chemists (ICYC2008), Penang Malaysia, 24-27 June 2008.

[9] Anderson, P.R., Kim, B., and O’Connor, C., 2000, Photocatalytic Process for Silver Recovery and Wash Water Reuse, Report of Desalination Research and development Program, Report No. 50, U.S. Department of the Interior Bureau of Reclamation Denver Office.

[10] Yamazaki, S., Iwai, S., Yano, J., and Taniguchi, H., 2001, J. Phys. Chem. A, 105, 50, 11285-11290.

[11] Wahyuni, E.T., Aprilita, N.H., and Mudasir, 2007, Study on Cu(II) Photoreduction Catalyzed by TiO2, International Conference on Chemical Science (ICCS) 2007, Yogyakarta, 24-26 May 2007.

[12] Wahyuni, E.T., Aprilita, N.H., Fitriani, A.H., and Nurhayati, S., 2008, Journal of People and Environment, 15, 1, 10-15.

[13] Brezova, V., Blazkova, A., Borosova, E., Ceppan, M., and Fiala, R., 2000, J. Mol. Catal. A: Chem., 98, 106-116.

[14] Sobral, L.S.G., Dutra, A.J.B., Rosenberg, B., and Lemon, F.A., 2002, The Electrochemical Speciation of Copper Cyanide Complexes, Centro de Technologia Mineral Ministerio da Ciencia e Technologia Coordinacao de Metalurgia Extractive, 16-20.

[15] Barakat, M.A., Chen, Y.T., and Huang, C.P., 2004, Appl. Catal., B, 53, 13-20.



DOI: https://doi.org/10.22146/ijc.21477

Article Metrics

Abstract views : 1625 | views : 1090


Copyright (c) 2010 Indonesian Journal of Chemistry

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

 


Indonesian Journal of Chemistry (ISSN 1411-9420 /e-ISSN 2460-1578) - Chemistry Department, Universitas Gadjah Mada, Indonesia.

Web
Analytics View The Statistics of Indones. J. Chem.