Abstract
The sonolysis of azide solutions was investigated. The main product is nitrogen, which is formed in the reaction of N −3 with OH radicals in the millimolar concentration range. At higher azide concentration, additional nitrogen is formed as hydrogen atoms are scavenged. Ammonia and hydrazine are minor products of the N −3 sonolysis. Solutions of iodide and bromide are also irradiated under pH conditions where reactions of the products, i.e., hydrogen per oxide and iodide (or bromide) do not occur. The total yield of the products as well as the hydrogen yield is independent of the solute concentration. The results are understood in terms of the competition of the OH+OH and the OH+solute reactions. A local concentration of 4 × 10−3 mol/L of the OH radicals in an interfacial region between the cavitation bubbles and the liquid is derived from the data obtained.
Similar content being viewed by others
References
Chen K Y, Ku Y and Lee K C. The study of ultrasonic irradiation on decomposition of 2-chlorophenol in aqueous solution[A]. Proceedings 9th Wastewater Treatment Technology Conference [C]. Taiwan, Nov. 27–28, 1994:14–21.
Ionescu S G and Popa N. Kinetics of FeSO4 sonolytic oxidation in aqueous solutions [J]. Revue Roumaine de Chimie, 1992, 37(7): 747–753.
Petrier C, Micolle M, Merlin G, et al. Unexpected frequency effects on the rate of oxidation process induced by ultrasound [J]. J. Environ. Sci. and Technol., 1992, 26: 1639–1642.
Hua I, John E, Thomson. Inactivation of Escherichia coli by sonication of discrete ultrasonic frequencies [J]. Wat. Res., 2000, 34 (15): 3888–3893.
Okouchia S, Nojima O and Arai T. Cavitation induced degradation of phenol by ultrasound [J]. Wat. Sci. Tech., 1992, 26(9–11): 2052–2056.
Petrier C and Francony A. Incidence of wave-frequency on the reaction rates during ultrasonic waste water treatment[J]. Wat. Sci. Tech., 1997, 35(4): 175–180.
Lin J, Chang C and Wu J. Decomposition of 2-chlorophenol in aquaeous solution by ultrasound / H2O2 process [J]. Wat. Sci. Tech., 1996, 33 (6): 75–81.
Hua I, Hochemer R and Hoffmam M. Sonolytic hydrolysis of P-notrophenyl acetate: The role of supercritical water[J]. J. Phys. Chem., 1995, 99: 2335–2342.
Misik V, Miyosh N and Reisz P. EPR spin-trapping, study of the sonolysis of H2O2/ D2O mixtures, probing the temperatures of cavitation regions [J]. J. Phys. Chem., 1995, 99:3605–3611.
Serpone N and Terzian R. Ultrasonic induced dehalo-genation & oxidation of 2, 3 and 4-chlorophenol in air-equivalent aqueous media, similarties with irradiated semiconductor particulates[J]. J. Phys. Chem., 1994, 98: 2643–2650.
Jiann M, Livengood C. Ultrasonic destruction of chlorinated compounds in aqueous solutions[J]. Envion. Prop., 1992, 11(3):195–201.
Author information
Authors and Affiliations
About this article
Cite this article
Robina, F., Lin, FK., Huang, JJ. et al. Sonochemical behavior of aqueous solutions of iodide, bromide and azide. J. of Shanghai Univ. 6, 255–259 (2002). https://doi.org/10.1007/s11741-002-0045-9
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/s11741-002-0045-9