Volume 5 Issue 2
Jun.  2012
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Article Navigation >  Water Science and Engineering  > 2012  >  5(2): 155-163
De-min YANG, Bing WANG, Hong-yang REN, Jian-mei YUAN. 2012: Effects and mechanism of ozonation for degradation of sodium acetate in aqueous solution. Water Science and Engineering, 5(2): 155-163. doi: 10.3882/j.issn.1674-2370.2012.02.004
Citation: De-min YANG, Bing WANG, Hong-yang REN, Jian-mei YUAN. 2012: Effects and mechanism of ozonation for degradation of sodium acetate in aqueous solution. Water Science and Engineering, 5(2): 155-163. doi: 10.3882/j.issn.1674-2370.2012.02.004
shu

Effects and mechanism of ozonation for degradation of sodium acetate in aqueous solution

doi: 10.3882/j.issn.1674-2370.2012.02.004
  • 1.

    School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, P. R. China

  • 2.

    Chongqing Key Laboratory of Exogenic Minerallization and Mine Environment, Chongqing Institute of Geology and Mineral Resources, Chongqing 400042, P. R. China

  • 3.

    Chongqing Research Center of State Key Laboratory of Coal Resources and Safe Mining, Chongqing 400042, P. R. China

Funds:  the Key Projects in the National Science and Technology Pillar Program during the Twelfth Five-Year Plan Period (Grant No. 2011BAC06B05) and the Open Fund of State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (Grants No. PLN1126 and PLN1127).
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  • Corresponding author: De-min YANG
  • Received Date: 2011-05-06
  • Rev Recd Date: 2012-02-22
    Abstract
  • The degradation efficiencies and mechanism of ozonation for the degradation of sodium acetate in aqueous solution were investigated under atmospheric pressure at room temperature  (293 K). The effects of the initial pH value, reaction time, and concentrations of, , CaCl2, and Ca(OH)2 on the removal rate of chemical oxygen demand (COD) were studied. The results indicated that ozonation obviously improved the degradation rate of sodium acetate when the pH value of the solution was not less than 8.5. A suitable long reaction time may be helpful in increasing the COD removal rate, and a removal rate of 36.36% can be obtained after a 30-minute treatment. The COD removal rate increased firstly and decreased subsequently with the increase of the  concentration (from 0 to 200 mg/L), and under the same experimental condition it reached the optimum 34.66% at the  concentration of 100 mg/L. The COD removal rate was 5.26% lower when the concentration of  was 200 mg/L than when there was no . The COD removal rate decreased by 15.68% when the  concentration increased from 0 to 200 mg/L.  has a more obvious scavenging effect in inhibiting the formation of hydroxyl radicals than . CaCl2 and Ca(OH)2 could increase the degradation efficiency of sodium acetate greatly, and the COD removal rates reached 65.73% and 83.46%, respectively, after a 30-minute treatment, 29.37% and 47.10% higher, respectively, than with single ozone oxidation. It was proved that the degradation of sodium acetate in the ozonation process followed the mechanism of oxidization with hydroxyl free radicals (·OH).

     

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    • References(21)
  • Acero, J. L., and Gunten, U. V. 2000. Influence of carbonate on the ozone/hydrogen peroxide based advanced oxidation process for drinking water treatment. Ozone Science and Engineering, 22(3), 305-328. [doi: 10.1080/01919510008547213]
    Amat, A. M., Arques, A., Miranda, M. A., and López, F. 2005. Use of ozone and/or UV in the treatment of effluents from board paper industry. Chemosphere, 60(8), 1111-1117. [doi:10.1016/j.chemosphere. 2004.12.062]
    Bader, H., and Hoigné, J. 1981. Determination of ozone in water by the indigo method. Water Research, 15(4), 449-456. [doi: 10.1016/0043-1354(81)90054-3]
    Barbara, K. H., Maria, Z., and Jacek, N. 2003. Catalytic ozonation and methods of enhancing molecular ozone reactions in water treatment. Applied Catalysis B: Environmental, 46(4), 639-669. [doi:10.1016/S0926- 3373(03)00326-6]
    Camel, V., and Bermond, A. 1998. The use of ozone and associated oxidation processes in drinking water treatment. Water Research, 32(11), 3208-3222. [doi: 10.1016/S0043-1354(98)00130-4]
    Environment Protection Bureau of China (EPBC). 2002. Analytical Methods of Water and Wastewater. 4th ed. Beijing: China Environment Science Press.
    Guendy, H. R. 2007. Ozone treatment of textile wastewater relevant to toxic effect elimination in marine environment. Egyptian Journal of Aquatic Research, 33(1), 98-115.
    Gurol, M. D., and Akata, A. 1996. Kinetics of ozone photolysis in aqueous solution. AICHE Journal, 42(11), 3283-3292. [doi: 10.1002/aic.690421128]
    Hoigné, J., and Bader, H. 1983a. Rate constants of reactions of ozone with organic and inorganic compounds in water: I. Non-dissociating organic compounds. Water Research, 17(2), 173-183. [doi:10.1016/0043- 1354(83)90098-2]
    Hoigné, J., and Bader, H. 1983b. Rate constants of reactions of ozone with organic and inorganic compounds in water: II. Dissociating organic compounds. Water Research, 17(2), 185-194. [doi:10.1016/0043- 1354(83)90099-4]
    Hoigné, J., Bader, H., Haag, W. R., and Staehelin, J. 1985. Rate constants of reactions of ozone with organic and inorganic compounds in water: Ⅲ. Inorganic compounds and radicals. Water Research, 19(8), 993-1004. [doi: 10.1016/0043-1354(85)90368-9]
    Hoigné, J. 1998. Chemistry of aqueous ozone and transformation of pollutants by ozonation and advanced oxidation process. Quality and Treatment of Drinking Water, 84-141. Heidelberg: Springer-verlag.
    Hua, W., Bennett, E. R., and Letcher, R. J. 2006. Ozone treatment and the depletion of detectable pharmaceuticals and atrazine herbicide in drinking water sourced from the upper Detroit River, Ontario, Canada. Water Research, 40(12), 2259-2266. [doi: 10.1016/j.watres.2006.04.033]
    Rakness, K., Gordon, G., Langlais, B., Masschelein, W., Matsumoto, N., Richard, Y., Robson, C. M., and Somiya, I. 1996. Guideline for measurement of ozone concentration in the process gas from an ozone generator. Ozone Science and Engineering, 18(3), 209-229. [doi: 10.1080/0191951960854732]
    Sarasa, J., Cortés, S., Ormad, P., Gracia, R., and Ovelleiro, J. L. 2002. Study of the aromatic by-products formed from ozonation of anilines in aqueous solution. Water Research, 36(12), 3035-3044. [doi: 10.1016/S0043-1354(02)00003-9]
    Staehelin, J., and Hoigené, J. 1982. Decomposition of ozone in water: Rate of initiation by hydroxide ions and hydrogen peroxide. Environmental Science and Technology, 16(10), 676-681. [doi: 10.1021/es00104a009]
    Yang, Y. X., Ma, J., Zhang, J., Zhao, L., Wang, S. J., and Qin, Q. D. 2006. Degradation of trace nitrobenzene by nano-TiO2/silica-gel catalyzed ozonation in aqueous solution. Acta Scientiae Circumstantiae, 27(8), 1258-1264. (in Chinese)
    Zhang, T., Chen, Z. L., Ma, J., and Sui, M. H. 2004. Catalytic ozonation of trace nitrobenzene in water by iron hydroxide. Environmental Science, 25(4), 43-47. (in Chinese)
    Zhao, L., Ma, J., and Sun, Z. Z. 2006. Effect of inorganic ions on degradation of trace nitrobenzene in aqueous solution by catalytic ozonation. Environmental Science, 27(5), 924-929. (in Chinese)
    Zhao, L., Ma, J., Sun, Z. Z., Liu, Z. Q., Yang Y. X., and Lu, W. 2007. Study on mechanism of ceramic honeycomb-catalytic ozonation for the decomposition of trace nitrobenzene in aqueous solution. Environmental Science, 28(2), 335-341. (in Chinese)
    Zhao, L., Ma, J., Sun, Z. Z., and Zhai, X. D. 2008. Mechanism of influence of initial pH on the degradation of nitrobenzene in aqueous solution by ceramic honeycomb catalytic ozonation. Environmental Science and Technology, 42(11), 4002-4007.
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