Related Experiment Video
Updated: Aug 1, 2026

Original Experimental Approach for Assessing Transport Fuel Stability
Published on: October 21, 2016
A kinetic study of the oxidation of S(IV) in seawater
1Department of Chemical and Environmental Engineering, University of Seville, Camino de los Descubrimientos s/n, 41092, Sevilla, Spain. vidal@esi.us.es
Abstract:
Flue gas desulfurization by means of SO2 absorption in seawater is a well-known process. However, it can be optimized if the oxidation kinetics of dissolved S(IV) is known. Laboratory reactor experiments in which the pH and temperature were controlled, determined the oxidation kinetics of S(IV) in seawater. This study conclusively shows that the order with respect to S(IV) is one and that the order with respect to oxygen is zero. The kinetic constant depends greatly on the temperature and on the pH; consequently, the activation energy and a relationship between the kinetic constant and the hydrogen proton concentration (2 < pH < 6) were also obtained.
Related Concept Videos
Oxidation Numbers
The Equilibrium Constant
Oxidation of Alcohols
The process of oxidation in a chemical reaction is observed in any of the three forms:
Redox Equilibria: Overview
Redox Titration: Iodimetry and Iodometry
Redox Titration: Other Oxidizing and Reducing Agents

