Model development about organic contaminant biodegradation process in soil system

Based on the mass balance theory, along with the application of a new theory—organic contaminant sequestration inside soil particles, a mathematical model which can simulate organic contaminant biodegradation process in soil system was developed. In the spherical diffusion model, local sorption\|desorption is described by a linear isotherm, irreversible sequestration by a pseudo\|first order kinetics and biodegradation by Monod kinetics. Model results match successfully with experimental data of sandy loam. Model simulations can be performed to quantitatively predict the degradation behavior of organic contaminant in soil system.