Effects of Salinity on Carbon Dioxide Microbubble Dissolution into Water
摘要
The present study investigates experimentally characteristics of dissolution of carbon dioxide (CO2) micro-bubbles generated by a multi-fluid mixer 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 bubble size becomes smaller for seawater than tap water and then the interfacial area concentration is much larger for seawater than tap water.