Catalytic Ozonation of Humic Acids with La-Mn/γ-Al₂O₃ Complexation Catalysts

Abstract:

This study was conducted to investigate the effect of a catalytic ozonation system for the treatment of humic acid(HA) as simulated wastewater by use of the rare earth and transition metal complexing γ-Al₂O₃ catalysts(RTCC) in aqueous solution at room temperature. In the reaction, HA was removed by the joint effect of ozonation and catalytic oxidation. Experimental results showed that the optimum technological conditions were calcination at 723 K, pH of 11 and 1:1 ratio (La (NO₃)₃/ Mn (NO₃)₂) for the preparation of RTCC. The ozonation with RTCC induced a significant degradation efficiency of HA in UV absorbance, as compared to ozone alone was 21.11% higher after 30 minutes reaction. The RTCC samples were measured by X-ray diffraction (XRD) patterns and scanning electron microscope (SEM) images.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 691-695
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.691
• Online since: May 2012
• Authors: Yan Li, Yong Liu, Shi Lin Zhao, Peng Juan Yuan, Lin Li
• Keywords: Catalytic Ozonation, Degradation Efficiency, Humic Acid (HA), La-Mn, Rare Earth (RE)

References

[1] STUMM W, MORGAN J J: Aquatic chemistry (3rd edition) [M]. John Wiley & Sons Inc.141-143(1996).

[2] S. G. Konsushko, G. G. Rudenko, M. A. Chaikovskaya,and N. A. Sinel'nik, Got. Khoz. Ukr. [Municipal Services inUkraine], No. 1, 26 (in Russian) (1985).

[3] Huang GZ, Ding YH, Dong XW(ed.): Removal of Humic Acids in Water by Catalytic Ozonation Process with Activated Carbon.Environmental Protection of Chemical Industry. 27(3):200(2007)

[4] Lei L, Gu L, Zhang XW, Su YL:Catalytic oxidation of highly concentrated real industrial wastewater by integrated ozone and activated carbon. Appl Catal A 327:287–294(2007)

DOI: 10.1016/j.apcata.2007.05.027

[5] Dai SS, Liu JG, Song WC(ed.), Application of advanced treatment for refractory organic wastewater with ozone oxidization method. Water Sciences and Engineering Technology.(2):24,25(2007)

[6] J.T. Jung J.O. Kim,J .Y.Choi:Effect of various oxidants in a photocatalysis/filtration system for the treatment of contaminants. Res Chem Intermed, 35: 244(2009)

DOI: 10.1007/s11164-009-0034-8

[7] Rodríguez1 A,Rosal1 R,Perdigón-Melón 1 JA.:Ozone-Based Technologies in Water and Wastewater Treatment.Hdb Env Chem Part S/2 5:128,140(2008)

[8] Li G,Xin Y,Jin l.X.:Removal of dichloroacetic acid from drinking water by using adsorptive ozonation. Ecotoxicology.20: 1161(2011)

DOI: 10.1007/s10646-011-0680-7

[9] Hewes CG, Davinson RR Water AIChE Symp Ser 70:69–71 (1972)

[10] Munter R, Advanced oxidation processes—current status and prospects. Proc Estonian Acad Sci Chem 50(2):59–80(2001)

[11] Chung HH, Jung J, Yoon JH, Lee MJ,:Catalytic Ozonation of PCE by Clay from Tidal Flat Sediments. Catal Lett 78(1–4):77–79(2002)

[12] Ma J, Sui M, Zhang T, Guan C,: Effect of pH on MnOx/GAC catalyzed ozonation for degradation of nitrobenzene. Water Res 39(5):779–786(2005)

DOI: 10.1016/j.watres.2004.11.020