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Radiation oxidation of phenol in the presence of petrochemical wastewater components

  • F. Macášek
  • V. Mikulaj
  • P. Rajec
  • R. Čech
  • L. Mátel
  • R. Kopunec
  • J. Kuruc
  • A. Švec
Article

Abstract

Radiolytical decomposition of phenol was investigated at60Co gamma irradiation (1–2 Gy·s−1, ≤10 kGy) of pre- and continuously aerated aqueous solutions at concentrations of phenol 1–100 mg· ·dm−3 and in the presence of sodium hydroxide, sulphuric acid, sodium and ferrous sulphate, formaldehyde, 2-propanol,n-hexane, xylene, benzene, and commercial gasoline. From the decomposition rate at doses 50–400 Gy, a phenomenological model of linear relation between the dose acquired for 37% decomposition (D37), initial concentration (g·m−3) of phenol (p0) and of an admixture (s0) was confirmed in the formD37=52ftr(p0+feqs0), wheref's are constants which can be attributed to the relative transformation resistance of phenol towards the OH radicals in given matrix (ftr, for pure waterftr=1) and relative acceptor capacity of competing substrate (feq). In real wastewaters, the efficient decrease of phenols content may be substantially lower than that in model solutions, obviously due to radiation oxidation of aromates, as proved by irradiation of aqueous solutions of benzene. Technical and economical feasibility of the process is discussed.

Keywords

Phenol Decomposition Rate Phenol Content Sulphuric Acid Sodium Hydroxide 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Akadémiai Kiadó 1995

Authors and Affiliations

  • F. Macášek
    • 1
  • V. Mikulaj
    • 1
  • P. Rajec
    • 1
  • R. Čech
    • 2
  • L. Mátel
    • 1
  • R. Kopunec
    • 1
  • J. Kuruc
    • 1
  • A. Švec
    • 1
  1. 1.Department of Nuclear ChemistryFaculty of Science, Comenius UniversityBratislavaSlovakia
  2. 2.Modra Planeta Ltd.BratislavaSlovakia

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