THERMAL DEHYDRATION OF THE SODIUM CARBONATE HYDRATES

Abstract

A thermal gravimetric method was employed to explore the course of dehydration of Na₂CO₃ · 10 H₂O, and Na₃CO₃ · H₂O particles. Experimental data were amassed both in the temperature-increasing and constant temperature mode. Very small sample masses were used in an effort to eliminate an effect of heat and mass transfer processes on the rate of reaction. Kinetic equations of Arrhenius type were proposed for two stages of the dehydration and tested against the results collected by experiment.

Keywords:

• Sodium carbonate decahydrate
• Thermal dehydration
• Kinetics
• Alkaline sorbents
• Environment
• Mathematical modeling

Additional information

Notes on contributors

MILOSLAV HARTMAN

Corresponding author. Tel.: [phone], Fax: [phone], e-mail: [email protected]