Abstract
The kinetics of photodegradation of alizarin green (AG) in an acoustic fluidized bed was investigated using Degussa P25 catalyst and N-doped TiO2 catalyst, respectively. The effects of initial concentration of AG, catalyst amount, initial pH value and liquid flow rate on the photodegradation rates were the main goal of present study. The degradation rate increased with increasing amount of photocatalyst, pH value and liquid flow rate, reached a maximum and then decreased. The degradation rate decreased with increasing initial concentration. According to the Langmuir–Hinshelwood model, the disappearance of the AG followed pseudo-first-order kinetics. Experimental results showed that AG can be degraded effectively by Degussa P25 catalyst and N-doped TiO2 catalyst in an acoustic fluidized bed reactor. N-doped TiO2 catalyst has high and significant photocatalytic activity and in comparison with Degussa P25 catalyst was photocatalyst.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Cheng, H., Chou, S., Chen, S., and Yu, C., J. Environ. Sci., 2014, vol. 26, pp. 1307–1312.
Azimi, Y., Allen, D.G., and Farnood, R.R., Water Res., 2014, vol. 54, pp. 179–187.
Mohapatra, D.P., Brar, S.K., Tyagi, R.D., Piard, P., and Surampalli, R.Y., Sci. Total. Environ., 2014, vols. 470/471, pp. 58–75.
Kochkodan, V.M., Rolya, E.A., and Goncharuk, V.V., J. Water Chem. and Technol., 2009, vol. 31, pp. 227–237.
Liu, P., Zhang, H., Feng, Y., Yang, F., and Zhang, J., Chem. Eng. J., 2014, vol. 240, pp. 211–220.
Wooseok, N., Woo, K., and Han, G.Y., J. Ind. Eng. Chem., 2009, vol. 15, pp. 348–353.
Su, C.C., Chen, C.M., Anotai, J., and Lu, M.C., Chem. Eng. J., 2009, vol. 15, pp. 128–135.
Roberto, L.P., Brandi, R.J., and Cassano, A.E., Chem. Eng. Sci., 2010, vol. 65, pp. 1345–1353.
Wang, R.C., Fan, K.S., and Chang, J.S., J. Taiwan Inst. Chem. Eng., 2009, vol. 5, pp. 533–540.
Dong, S.S., Zhou, D., and Bi, X.T., Particuology, 2010, vol. 8, pp. 60–66.
Si, C.D., Zhou, J., and Guo, Q.J., Int. J. Chem. React. Eng., 2012, vol. 10, pp. 1–13.
David, R.E. and Theodore, J.H., Chem. Eng. J., 2013, vol. 243, pp. 411–420.
Gao, H.T., Si, C.D., Zhou, J., and Liu, G.J., J. Taiwan Inst. Chem. Eng., 2011, vol. 42, pp. 108–113.
Xiong, Z.D., Xu, A.H., Li, H.Y., Ruang, Xi.C., Xia, D.S., and Zeng. Q.F., Ind. Eng. Chem. Res., 2013, vol. 2, pp. 362–369.
Satoshi, K., Li, N., Katsumata, H., Suzuki, T., and Ohta, K., Chem. Eng. J., 2009, vol. 148, pp. 50–56.
Pierre, F.B., Bouzza, A., and Wolbert, D., Environ. Sci. Technol., 2007, vol. 41, pp. 2908–2914.
Hao, X.G., Li, H.H., and Zhang, Z.L., Chem. Eng. Res., 2009, vol. 87, pp. 1604–1611.
Author information
Authors and Affiliations
Corresponding author
Additional information
The text was submitted by the authors in English.
About this article
Cite this article
Si, C., Zhou, J., Sun, Y. et al. Kinetics of photodegradation of alizarin green in an acoustic fluidized bed using TiO2 catalyst. J. Water Chem. Technol. 38, 207–212 (2016). https://doi.org/10.3103/S1063455X16040044
Received:
Published:
Issue Date:
DOI: https://doi.org/10.3103/S1063455X16040044