Investigation of the interaction of sodium hypochlorite with olefins in cavitation fields

Authors

DOI:

https://doi.org/10.15587/1729-4061.2015.38783

Keywords:

sodium hypochlorite, olefins, waste water, ultrasonic radiation, cavitation, destruction, oxidation

Abstract

The interaction of sodium hypochlorite as a component of wastewater production of caustic soda and chlorine compounds from olefinic C4-C7 number contained in wastewater olefinic production was investigated.

The processes of neutralization of sodium hypochlorite, which are implemented in the industry, are very energy-intensive or require large amounts of reagents. That is why it was suggested to intensify the interaction of sodium hypochlorite with olefins by using cavitation fields.

Based on the experimental results the main kinetic parameters of the process was calculated: the rate constant, order of reaction temperature coefficient. It is assumed that the process is carried out for a radical mechanism.

It was found out that as increasing temperature and power ultrasonic emitter rate constant of the reaction between sodium hypochlorite and olefins increases. In this case the duration of process and unit costs of energy for the decomposition of sodium hypochlorite was reduced.

The results will be used to develop energy-efficient process simultaneous neutralization of hypochloritic and olefinic wastewater generated in related industries.

Author Biographies

Зеновій Орестович Знак, Lviv Polytechnic National University Stepan Bandera Str.,12 79013, Lviv, Ukraine, 79013

Doctor of Technical Sciences, Professor

Department of Chemistry and Technology of Inorganic Substances

Надія Михайлівна Гнатишин, Lviv Polytechnic National University Stepan Bandera Str., 12, Lviv, Ukraine, 79013

applicant

Department of Chemistry and Technology of Inorganic Substances

References

  1. Znak, Z. O., Hnatyshyn, N. M. (2010). Intensification of thermal decomposition of sodium and calcium hypochlorite. Eastern-European Journal of Enterprise Technologies, 6/6 (48), 40–43. Available at: http://journals.uran.ua/eejet/article/view/3345/3146
  2. Zapolskyi, A. K., Mishkova-Klymenko, N. A., Astrelin, I. M., Bryk, M. T., Hvozdiak, P. I., Kniazkova, T. V. (2000). Fizyko-khimichni osnovy tekhnolohii ochyshchennia stichnykh vod. Kiev: Libra. 552.
  3. Frank, A. M. (2012). Disinfection with Liquid Sodium Hypochlorite: Principles, Methods, and Lessons Learned. Florida Water Resources Journal, 4–8.
  4. Lister, M. W. (2011). Decomposition of sodium hypochlorite; the catalyzed reaction. Canadian Journal of Chemistry, 34 (4), 479–488. doi: 10.1139/v56-069
  5. Church, J. A. (1994). Kinetics of the uncatalyzed and Cu(II)-catalyzed decomposition of sodium hypochlorite. Industrial & Engineering Chemistry Research, 33 (2), 239–245. doi: 10.1021/ie00026a010
  6. Kim, K.-W., Lee, E.-H., Chung, D.-Y., Moon, J.-K., Shin, H.-S., Kim, J.-S., Shin, D.-W. (2012). Manufacture characteristics of metal oxide–hydroxides for the catalytic decomposition of a sodium hypochlorite solution. Chemical Engineering Journal, 200-202, 52–58. doi: 10.1016/j.cej.2012.06.026
  7. Moorhouse, J. (2001). Modern Chlor-Alkali Technology. Chichester: MPG Books ltd., 48. doi: 10.1002/9780470999479
  8. Bolton, J. R., Smith, D. W. (2007). Photolysis of aqueous free chlorine species (HOCl and OCl–) with 254 nm ultraviolet light. Journal of Environmental Engineering and Science, 6 (3), 277–284. doi: 10.1139/s06-052
  9. Bikbulatov, I. H. (2000). Bezothodnoe proizvodstvo hlorgidrinov. Moscow: Himiya, 167.
  10. Kolesnikov, I. V. (1991). Ustoychivost realnyih rastvorov gipohlorita natriya. Him. prom., 6, 361–365.
  11. Kardashev, T. A. (1991). Fizicheskie metodyi intensifikatsii protsessov himicheskoy tehnologiі. Moscow: Himiya, 208.
  12. Roberts, Dzh., Kaserio, M. (1978). Osnovy organicheskoy himii. Vol. 2. Moscow: Mir, 888.

Published

2015-04-20

How to Cite

Знак, З. О., & Гнатишин, Н. М. (2015). Investigation of the interaction of sodium hypochlorite with olefins in cavitation fields. Eastern-European Journal of Enterprise Technologies, 2(6(74), 49–54. https://doi.org/10.15587/1729-4061.2015.38783