Nanoscale Zero-Valent Iron Groundwater Remediation (2D)

This 2D companion to the 3D nZVI particle simulator models the same in-situ nanoremediation physics — reactive iron transported downgradient from an injection well, passivating as its shrinking core corrodes, degrading chlorinated contaminant on contact — but solves it as a continuum problem instead of tracking individual particles. A finite-difference scheme integrates the coupled advection-dispersion-reaction partial differential equations for the reactive-iron density and contaminant concentration fields directly, so you watch two live concentration profiles evolve along the aquifer rather than a cloud of discrete particles. Adjust injection rate, flow velocity, aggregate size and corrosion rate to see the same engineering trade-off the 3D sim shows — mobile, fast-reacting iron dies out before it travels far, while larger aggregates carry more iron but disperse and react more slowly — expressed this time as smooth PDE solutions rather than particle statistics.