Abstract
This The use of organic acid is very important in wet flue gas desulphurisation (FGD) process, so as to buffer the pH and make the operation more flexible and also improve reliability. In this study the dissolution of limestone in acetic acid solution is studied using pH-Stat equipment at pH 5. The effects of reaction temperature, particle size, solid-to-liquid ratio, stirring speed and concentration were studied using a pH-Stat. It was found out that the dissolution reaction follows a shrinking-core model with the chemical reaction control as the rate-controlling step. The dissolution rate increased with an increase in concentration and reaction temperature and with a decrease in particle size, and solid-to-liquid ratio. The activation of this dissolution process was found to be 20.62 kJ/mol.
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