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Kinetics of oxidation of magnesium sulfite suspensions

S.K. Fedorova, L. A. ALEKSEEVA, A.V. Gladkii

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Abstract

Study of the kinetics of oxidation of magnesium sulfite suspensions showed that sulfite ions are oxidized, regardless of pH. After disappearance of sulfite ions from the solution, pyrosulfite ions undergo oxidation but bisulfite ions do not. The order of the oxidation reaction with respect to sulfite ions and oxygen was determined. The reaction-rate constants and activation energy were calculated. The results of the investigation can be used in calculations of oxidation during removal of sulfur dioxide from gases by the magnesite method using an absorber with intensive mixing of the liquid phase.

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What this paper is about

Study of the kinetics of oxidation of magnesium sulfite suspensions showed that sulfite ions are oxidized, regardless of pH. After disappearance of sulfite ions from the solution, pyrosulfite ions undergo oxidation but bisulfite ions do not. The order of the oxidation reaction with respect to sulfite ions and oxygen was determined. The reaction-rate constants and activation energy were calculated. The results of the investigation can be used in calculations of oxidation during removal of sulfur dioxide from gases by the magnesite method using an absorber with intensive mixing of the liquid phase.

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Available abstract

Study of the kinetics of oxidation of magnesium sulfite suspensions showed that sulfite ions are oxidized, regardless of pH. After disappearance of sulfite ions from the solution, pyrosulfite ions undergo oxidation but bisulfite ions do not. The order of the oxidation reaction with respect to sulfite ions and oxygen was determined. The reaction-rate constants and activation energy were calculated. The results of the investigation can be used in calculations of oxidation during removal of sulfur dioxide from gases by the magnesite method using an absorber with intensive mixing of the liquid phase.

Key concepts: Sulfite, Bisulfite, Chemistry, Sulfur dioxide, Inorganic chemistry, Ion, Kinetics, Magnesium

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