Dissolution of carbon dioxide microbubbles into artificial seawater

Abstract

The present study investigates experimentally characteristics of dissolution of carbon dioxide (CO₂) micro-bubbles into liquids. As the liquids, artificial seawater and tap water were used to know the effects of salinity on the dissolution. The Sauter mean diameter of the bubbles, concentration of dissolved CO₂ in liquid, volumetric mass transfer coefficient, void fraction, were measured. In addition, the interfacial area concentration was determined from experimental values of the Sauter mean diameter and the void fraction. The volumetric mass transfer coefficient is larger for seawater than tap water because the interfacial area concentration is much larger for seawater than tap water.