THE EFFECT OF DEVELOPING DIFFUSIVE BOUNDARY LAYER ON SEDIMENTARY OXYGEN DEMAND

Abstract

A model of sedimentary oxygen demand (SOD) for a sediment bed for finite length is presented. The model describes the effect of developing a diffusive boundary layer on oxygen transfer just above the sediment/water interface and on microbial oxygen uptake inside the sediment. Variations of biomass profile inside the sediment, dissolved oxygen concentration profile near the sediment/water interface, and SOD in accordance with the developingd iffusiveb oundaryl ayer are investigatedn umerically.