Study on Catalytic Wet Oxidation of H-Acid Containing Water over Fe/SiO₂ Catalyst

Abstract:

This study has investigated the degradation of H-acid (1-amino-8-naphthol-3, 6-disulfonic acid) containing water by catalytic wet hydrogen peroxide oxidation method, in which the catalyst of Fe/SiO₂ was prepared by impregnation technology. The effect of catalyst dosage, initial pH value, amount of hydrogen peroxide and reaction temperature on the degradation process have been discussed, and the results indicated that wet hydrogen peroxide oxidation is an effective method for treating the wastewater containing H-acid, under the conditions that: catalyst dosage was 2 g, initial pH value was 7, amount of hydrogen peroxide was 10 mL (0.83 time of theoretical required amount) and reaction temperature was 80 °C, the COD and color removal rate can reach 87.3% and 96.5%, respectively.

• Periodical: Advanced Materials Research (Volumes 641-642)
• Pages: 281-284
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.641-642.281
• Online since: January 2013
• Authors: Hong Ya Li, Bin Xia Zhao, Wei Li Bai, Xiao Li Zhang
• Keywords: Catalytic Wet Oxidation, Fe/SiO₂, H-Acid, Hydrogen Peroxide

References

[1] V.S. Mishra, V.V. Mahajani, J.B. Joshi, Wet air oxidation, Ind. Eng. Chem. Res. 34 (1995) 2-48.

DOI: 10.1021/ie00040a001

[2] W.W. Tang, G.W. Gu, Progress of wet air oxidation in wastewater treatment, Shanghai Environmental Sciences, 18 (1999) 220-222.

[3] S.J. Qiao, A.P. Zhao, X.L. Xu, Study on organic industrial wastewater degradation by advanced catalytic oxidation method, Research of Environmental Sciences, 18 (2005) 104-106.

[4] A. Fortuny, J. Font, A. Fabregat, Wet air oxidation of phenol using active carbon as catalyst, Appl Catal B: Environ. 19 (1998) 165-173.

DOI: 10.1016/s0926-3373(98)00072-1

[5] K. Swaminathan, S. Sandhya, A.C. Sophia, K. Pachhade, Y.V. Subrahmanyam, Decolorization and degradation of H-acid and other dyes using ferrous-hydrogen peroxide system, Chemosphere. 50 (2003) 619-625.

DOI: 10.1016/s0045-6535(02)00615-x

[6] K. Swaminathan, K. Pachhade, S. Sandhya, Decomposition of a dye intermediate, (H-acid) 1 amino-8-naphthol-3, 6 disulfonic acid in aqueous solution by ozonation, Desalination 186 (2005) 155–164.

DOI: 10.1016/j.desal.2005.05.018

[7] H.Z. Du, X.H. Dai, B. Wang, Treatment of H-acid indusrial wastewater by catalytic wet oxidation, Industrial Water Treatment. 24 (2004) 25-27.

[8] M. Neamtu, C. Zaharia, C. Catrinescu, Fe-exchanged Y zeolite as catalyst for wet peroxide oxidation of reactive azo dye Procion Marine H-EXL, Appl Catal B: Environ, 2004, 48 (4): 287-294.

DOI: 10.1016/j.apcatb.2003.11.005

[9] T.L.P. Dantas, V.P. Mendonca, H.J. Jose, Treatment of textile waste water by heterogeneous Fenton process using a new composite Fe2O3/carbon, Chem Eng J. 118 (2006) 77-82.

DOI: 10.1016/j.cej.2006.01.016

[10] M. Falcon, Wet oxidation of carboxylic acids with hydrogen peroxide, Environ Technol. 16 (1995) 501-514.