Open AccessThe influence of temperature on the decomposition kinetics of peracetic acid in solutions
Author(s) -
Leo Kunigk,
Daniel R. Gomes,
Federica Forte,
K.P. Vidal,
Lígia Ferreira Gomes,
P.F. Sousa
Publication year - 2001
Publication title -
brazilian journal of chemical engineering/brazilian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.313
H-Index - 52
eISSN - 1678-4383
pISSN - 0104-6632
DOI - 10.1590/s0104-66322001000200009
Subject(s) - peracetic acid , decomposition , arrhenius equation , chemistry , reaction rate constant , activation energy , kinetics , hand sanitizer , aqueous solution , chemical decomposition , thermodynamics , organic chemistry , hydrogen peroxide , food science , physics , quantum mechanics
Peracetic acid is a powerful sanitizer that has only recently been introduced in the Brazilian food industry. The main disadvantage of this sanitizer is its decomposition rate. The main purpose of this paper is to present results obtained in experiments carried out to study the decomposition kinetics of peracetic acid in aqueous solutions at 25, 35, 40 and 45 °C. The decompositon of peracetic acid is a first-order reaction. The decomposition rate constants are between 1.71x10-3 h -1 for 25 °C and 9.64x10-3 h-1 for 45 °C. The decomposition rate constant is affected by temperature according to the Arrhenius equation, and the activation energy for the decomposition of peracetic acid in aqueous solutions prepared from the commercial formulation used in this work is 66.20 kJ/mol