BIO1D was developed by was first released in 1987, and has been extensively used at several organizations, and as a teaching tool at several leading Universities.

BIO1D simulates the transport of organics in saturated porous media. The primary objective was to provide an interactive user-friendly microcomputer software package to serve as an educational tool in understanding the relative importance of various physicochemical and biochemical processes.

The following features are incorporated in BIO1D: advective and dispersive transport of substrate and oxygen; aerobic and anaerobic biodegradation; first-order decay; Linear, Freundlich, and Langmuir adsorption isotherms for substrate and oxygen; and Dirichlet, Neumann or Cauchy boundary condition modified to include an optional first-order decay. Aerobic biodegradation is simulated using modified Monod functions, and anaerobic biodegradation is represented using Michaelis-Menten kinetics. The resulting two coupled equations are approximated using finite differences, where the nonlinearities are treated using Newton-Raphson numerical procedure. It is assumed that the microbial mass is constant at the observed background density. The code is extensively verified using analytical solutions and numerical results from other studies.

A preprocessor has been built into BIO1D which enables the user to prepare input data interactively. The user may run cases with different biodegradation and adsorption options, and compare results instantly on screen. Cumulative mass balance charts are also displayed to show the contribution of the processes considered.

Brochure

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Price

Cost of BIO1D 1.2:

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