Abstract The HYDRUS-1D and HYDRUS (2D/3D) computer software packages are widely
used finite-element models for simulating the one-and two-or three-dimensional movement …

We review theoretical and computational research, primarily from the past 10 years,
addressing the flow of reactive fluids in porous media. The focus is on systems where …

The vadose zone (often called the unsaturated zone) is commonly defined as the geologic
media spanning from the land surface to the groundwater table of the first unconfined aquifer …

To understand how redox processes influence carbon, nitrogen, and iron cycling within the
intrameander hyporheic zone, we developed a biotic and abiotic reaction network and …

Acid mine drainage (AMD), caused by weathering of sulfide-rich mine wastes, is arguably
the most critical environmental issue in the mining sector. Despite the fact that individual …

Multicomponent gas transport in porous media and at the interface between porous media
and free flow occurs in a wide range of technical and environmental systems. Modeling tools …

HPx is a multicomponent reactive transport model which uses HYDRUS as the flow and
transport solver and PHREEQC-3 as the biogeochemical solver. Some recent adaptations …

Land drainage lowers the soil water table, which triggers enhanced oxidation of iron sulfide
minerals in acid sulfate soils, causing acidification of fields and posing environmental …

Over the last 20 years, we have seen firsthand the evolution of multicomponent reactive
transport modeling and the expanding range and increasing complexity of subsurface …

Polluted drainage from weathering of sulfide-rich waste rock deposits can cause long-term
impairment to waterways and biodiversity near mining sites. Mechanistic models represent …