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DEVELOPMENT OF BIOPLUME 4 MODEL FOR FUELS AND CHLORINATED SOLVENT BIODEGRADATION
Citation:
RIFAI, H., C. J. NEWELL, A. M. SPEXET, AND J. T. WILSON. DEVELOPMENT OF BIOPLUME 4 MODEL FOR FUELS AND CHLORINATED SOLVENT BIODEGRADATION. In Proceedings, Eighth International In Situ and On-Site Bioremediation Symposium, Baltimore, MD, June 06 - 09, 2005. Battelle Press, Columbus, OH, G-40, ISBN1574771523, (2006).
Impact/Purpose:
to present information
Description:
The Bioplume model has been in development and use for modeling biodegradation and natural attenuation since the late 1980s. Bioplume 1 focused on aerobic biodegradation of BTEX. Bioplume II simulated oxygen and hydrocarbons and simulated biodegradation using an instantaneous reaction. Anaerobic biodegradation in Bioplume II was modeled as a first-order reaction. Bioplume III expanded the kinetic expressions for biodegradation available in Bioplume II and included first-order, instantaneous, and Monod kinetics. Additionally, Bioplume III simulated the anaerobic electron acceptors in the subsurface along with oxygen and hydrocarbon. In this fourth generation version, the conceptual model for biodegradation in Bioplume has been significantly changed. There is a growing appreciation for the role of Iron III minerals in the abiotic transformation of contaminants including cis-DCE and vinyl chloride and MTBE. Existing codes cannot simulate biodegradation by iron reducing microorganisms in a logical and straightforward manner. Bioplume 4 was developed to meet this need. The key changes include: (1) simulating both fuels and chlorinated solvents; (2) eliminating Monod kinetics due to the lack of kenetic rate data; (3) addition of zero-order kinetic expression for BTEX; (4) allowing iron reduction and methanogenesis to occur simultaneously for BETX; and (5) incorporating biodegradation for vinyl chloride and cis-DCE using Iron III as an electron acceptor. Furthermore, the Bioplume 4 model incorporates a new interface for data entry and visualization that allows comparison to measured data in monitoring wells. This paper presents the new biodegradation conceptual model implemented in Bioplume 4 as well as illustrative examples.
URLs/Downloads:
DEVELOPMENT OF BIOPLUME 4 MODEL FOR FUELS AND CHLORINATED SOLVENT BIODEGRADATION (PDF, NA pp, 155 KB, about PDF)battelle.org/biosymp
