Temperature effect on the kinetics of persulfate oxidation of p-chloroaniline

Yong Qing Zhang, Xiao Zhe Du, Wei Lin Huang

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

The kinetics of heat-facilitated persulfate oxidation of p-chloroaniline (PCA) in aqueous solutions was measured at five different temperature conditions and at four different oxidant concentrations. The PCA degradation was found to follow a pseudo-first-order decay model when the persulfate was excessive. The pseudo-first-order rate constants of PCA degradation by persulfate (50 mmol/L) at pH 7.0 are 0.12 × 10-4, 0.28 × 10-4, 0.43 × 10-4, 0.83 × 10-4, 1.32 × 10 -4 s-1 at 10, 20, 30, 40 and 50 °C, respectively. Under the above reaction conditions, the reaction has activation energy of 49.97 kJ/mol. The observed rate was found to be function of temperature and oxidant concentration. Raising temperature and increasing persulfate concentration can significantly accelerate the PCA degradation.

Original languageEnglish (US)
Pages (from-to)358-361
Number of pages4
JournalChinese Chemical Letters
Volume22
Issue number3
DOIs
StatePublished - Mar 2011

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Keywords

  • In situ chemical oxidation
  • Kinetics
  • Persulfate
  • Temperature
  • p-Chloroaniline

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