Distribution of Fe(II) Concentration during Degradation of Rhodamine B by Fenton Reagent

Abstract:

The effects of reaction conditions including Fe²⁺, H₂O₂, oxalic acid, and humic acid dosages were discussed on the Fenton degradation of rhodamine B (RB). The optimal reaction conditions of Fenton reaction were 0.15 mM Fe²⁺, 5 mM H₂O₂, and pH 3.0, and the decolorization rate RB (10 mg/L) reached 97.8% after 30min catalytic degradation. The changes of Fe²⁺ concentrations in Fenton system has been focused on in this work. A relatively low concentration of Fe²⁺ was maintained during reaction process when Fe²⁺ and H₂O₂ were added with high concentration, and thus RB was degraded quickly. The results implicated that Fe²⁺ dosage played a very important role in the degradation of RB, and H₂O₂ dosage didn’t have an apparent influence on the degradation of RB in general. The Fenton degradation of RB could be inhibited in the presence of oxalic acid and humic acid, especially at a high concentration of oxalic acid and humic acid.

• Periodical: Advanced Materials Research (Volumes 261-263)
• Pages: 744-748
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.261-263.744
• Online since: May 2011
• Authors: Xiao Xia Ou, Feng Jie Zhang, Chong Wang, Yun Na Wu, Juan Du
• Keywords: Degradation, Humic Acid (HA), Oxalic Acid, Rhodamine B (RhB)

References

[1] G.K. Zhang, Y.Y. Gao, Y.Z. Zhang et al.: Environmental Science and Technology Vol.44 (2010), p.6384

[2] P. Janoš: Environmental Science and Technology Vol.37 (2003), p.5792

[3] L.J. Kong and A.T. Lemley: Journal of Agricultural and Food Chemistry Vol.54 (2006), p.3941

[4] S. Chiron, A. Fernandez-Alba, A. Rodriguez et al.: Water Research Vol.34 (2000), p.366

[5] R.J. Watts, A.L. Teel: Journal of Environmental Engineering-asce. Vol.131 (2005), p.612

[6] N. Masomboon, C. Ratanatamkkul and M.C. Lu: Environmental Science and Technology Vol.43 (2009), p.8629

[7] C. Walling: Accounts of Chemical Research Vol.8 (1975), p.125

[8] J.A. Zazo, J.A. Casas, A.F. Mohedano et al.: Environmental Science and Technology Vol.39 (2005), p.9295

[9] M.D. Paciolla, G. Davies and S.A. Jansen: Environmental Science and Technology Vol.33 (1999), p.1814

[10] M. Fukushima, K. Tatsumi and K. Morimoto: Environmental Science and Technology Vol.34 (2000), p.(2006)

[11] J.H. Ma, W.H. Ma, W.J. Song et al.: Environmental Science and Technology Vol.40 (2006), p.618

[12] J. Sarma, A. Sarma and K.G. Bhattacharyya: Industrial and Engineering Chemistry Research Vol.47 (2008), p.5433

[13] T. Zhang, K.B. Li, J.T. Chen et al.: Journal of Northwest A and F University (Nat. Sci. Ed.) Vol.38 (2010), p.197, in Chinese.

[14] Q. Wang, Y.P. Huang, M. Tang et al.: Acta Energiae Solaris Sinica. Vol.30 (2009), p.36, in Chinese.

[15] Y.Y. Wu, F.H. Qin, Y.L. Lai, et al.: Research of Environmental Sciences Vol.23 (2010), p.94, in Chinese.