Abstract
The paper presents a mechanistic model for simulation of mass removal during air sparging. Model takes into account several processes which are commonly neglected, suchas air channeling and advection by the water phase. Diffusion of contaminants towards the air channels is modeled as a first order kinetic between the two water compartments. The adopted model of contaminant evaporation at the air-water interface is verified by comparison with reported experimental results. Model is used for simulation of two-dimensional air sparging laboratory experiment conducted by Reddy and Tekola (2004). Good overall agreement is observed. It is showed that natural groundwater flow can influence the efficiency of the air sparging.
