Large NaCl-effect on the Decomposition Rate of Chlorate Ions in HCl-containing Brine Solutions and Its Consequences for the Chlor-alkali Industry

Authors

  • Alexandra Jakab-Nácsa
    Affiliation
    Wanhua-Borsodchem, H-3700 Kazincbarcika, 1 Bolyai tér, Hungary
  • Dávid Stomp
    Affiliation
    Wanhua-Borsodchem, H-3700 Kazincbarcika, 1 Bolyai tér, Hungary
  • László Farkas
    Affiliation
    Wanhua-Borsodchem, H-3700 Kazincbarcika, 1 Bolyai tér, Hungary
  • George Kaptay
    Affiliation
    Bay Zoltan Ltd. for Applied Research, H-3519 Miskolc, 2 Iglói út, Hungary
    Department of Nanotechnology, Faculty of Materials Science and Engineering, University of Miskolc, H-3515 Miskolc, Egyetemváros, P. O. B. 21, Hungary
    MTA-ME Materials Science Research Group, H-3515 Miskolc, Egyetemváros, P. O. B. 21, Hungary
https://doi.org/10.3311/PPch.14634

Abstract

The decomposition rate of chlorate (NaClO3) in aqueous solutions (brines) containing initially 6:1 mol/mol HCl:NaClO3 is studied at 90°C at various NaCl contents experimentally. A strong positive effect of NaCl addition is shown on the decomposition rate of chlorate. It is found more reasonable in the chlor-alkali industry first to saturate the brine by sodium chloride and only then to eliminate from it the chlorate by adding HCl (before the solution is transferred into the electrolysis cell to be protected from the chlorate ions).

Keywords:

brine solution, chlorate decomposition rate, HCl, effect of NaCl

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Published Online

2020-11-19

How to Cite

Jakab-Nácsa, A., Stomp, D., Farkas, L., Kaptay, G. “Large NaCl-effect on the Decomposition Rate of Chlorate Ions in HCl-containing Brine Solutions and Its Consequences for the Chlor-alkali Industry”, Periodica Polytechnica Chemical Engineering, 65(2), pp. 238–242, 2021. https://doi.org/10.3311/PPch.14634

Issue

Vol. 65 No. 2 (2021)

Section

Articles