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A Coupled Mass Transfer and Surface Complexation Model for Uranium (VI) Removal from Wastewaters

by John Lenhart, Colorado Sch of Mines, Golden, United States,
Linda A. Figueroa, Colorado Sch of Mines, Golden, United States,
Bruce D. Honeyman, Colorado Sch of Mines, Golden, United States,



Document Type: Proceeding Paper

Part of: Critical Issues in Water and Wastewater Treatment

Abstract:

A remediation technique has been developed for removing uranium (VI) from complex contaminated groundwater using flake chitin as a biosorbent in batch and continuous flow configurations. With this system, U(VI) removal efficiency can be predicted using a model that integrates surface complexation models, mass transport limitations and sorption kinetics. This integration allows the reactor model to predict removal efficiencies for complex groundwaters with variable U(VI) concentrations and other constituents. The system has been validated using laboratory-derived kinetic data in batch and CSTR systems to verify the model predictions of U(VI) uptake from simulated contaminated groundwater.

Subject Headings: Groundwater pollution | Water treatment | Uranium | Kinetics | Wastewater management | Mathematical models | Mass transfer

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