Studies on removal of phenol sulfonic acid-syntan in aqueous medium using ozonation

Rema Thankappan, S. V. Srinivasan, R. Suthanthararajan, Mika Sillanpää

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


The removal of phenol sulfonic acid-syntan (PSAS) in terms of chemical oxygen demand (COD) was studied at different pH, ozone and initial PSAS concentrations and the optimum condition was found to be pH 7, ozone concentration of 5.2 × 10−3mmol/L and initial PSAS concentration of 500 mg/L. The increase in BOD5/COD ratio confirmed the bio-treatability of ozonated PSAS effluent. The excitation–emission matrix intensity and Fourier transmission infra-red spectroscopy confirmed the generation of intermediate by-product during degradation of PSAS. The ozonation of PSAS was found to obey fast regime pseudo-first-order reaction with a rate constant of 3.7 × 10–9 mol−1 s−1. The mean oxidation state of carbon value between +2 and +3 confirmed that the ozonation of PSAS resulted in partial mineralization.

Original languageEnglish
Pages (from-to)2434-2446
Number of pages13
JournalEnvironmental Technology (United Kingdom)
Issue number19
Publication statusPublished - 2 Oct 2018
Externally publishedYes


  • COD
  • EEM
  • ozone
  • rate constant
  • syntan

ASJC Scopus subject areas

  • Environmental Chemistry
  • Water Science and Technology
  • Waste Management and Disposal


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