TiO2 BEADS FOR PHOTOCATALYTIC DEGRADATION OF HUMIC ACID IN PEAT WATER

https://doi.org/10.22146/ijc.21389

Winarti Andayani(1*), Agustin N M Bagyo(2)

(1) Center for The Application of Isotopes and Radiation Technologies, National Nuclear Energy Agency, Jakarta
(2) Center for The Application of Isotopes and Radiation Technologies, National Nuclear Energy Agency, Jakarta
(*) Corresponding Author

Abstract


Degradation of humic acid in aqueous solution containing TiO2 coated on ceramics beads under irradiation of 254 nm UV light has been conducted in batch reactor. The aim of this experiment was to study photocatalytic degradation of humic acid in peat water. The irradiation of the humic acid in aqueous solution was conducted in various conditions i.e solely uv, in the presence of TiO2-slurry and TiO2 beads. The color intensity, humic acid residue, conductivity and COD (chemical oxygen demand) of the solution were analyzed before and after irradiation.  The compounds produced during photodegradation were identified using HPLC. The results showed that after photocatalytic degradation, the color intensity and the COD value of the solution decreased, while the conductivity of water increased indicating mineralization of the peat water occurred. In addition, oxalic acid as the product of degradation was observed.

Keywords


Peat water; humic acid; photocatalytic degradation; TiO2

Full Text:

Full Text PDF


References

[1] Setyawati, L.M., 1994, Symposium of Peat Water Treatment, Palangkaraya.

[2] MacCarthy, P., 2001, Soil Sci., 166, 11, 738–751.

[3] Chang, E.E., Chiang, P.C., Ko, Y.W., and Lan, W.H., 2001, Chemosphere, 44, 5, 1231–1236.

[4] Nishijima, W., Fahmi, Mukaidani, T., and Okada, M., 2003, Water Res., 37, 1, 150–154.

[5] Zhang, X., Minear, R.A., and Barret, S.E., 2005, Environ. Sci. Technol., 39, 4, 963–972.

[6] Cheng, W.P., and Chi, F.H., 2002, Water Res., 36, 18, 4583–4591.

[7] Kerc, A., Bekbolet, M., and Saatci, A.M., 2003, Int. J. Photoenergy, 5, 2, 69–74.

[8] Portjanskaja, E., Krichevskaya, M., Preis, S., and Kallas, J., 2004, Environ. Chem. Lett., 2, 3, 123–127.

[9] Yigit, Z., and Inan, H., 2009, Water Air Soil Pollut., 9, 3-4, 237–243.

[10] Wiszniowski, J., Robert, D., Surmacz-Gorska, J., Miksch, K., and Weber, J., 2003, Int. J. Photoenergy, 05, 69–73.

[11] Ran, T., Choo, K-H., and Choi, W., 2002, Appl. Chem., 6, 2, 751–754.

[12] Palmer, F.L., Eggins, B.R., and Coleman, H.M., 2002, J. Photochem. Photobiol., 31, 5, 1223–1226.

[13] Uyguner, C.S., and Bekbolet, M., 2004, Int. J. Photoenergy, 06, 73–80



DOI: https://doi.org/10.22146/ijc.21389

Article Metrics

Abstract views : 2058 | views : 2228


Copyright (c) 2011 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.