Reaction transport, often termed reactive transport, is a topic in chemical, environmental, and geosciences that examines the coupled processes of chemical reactions and the physical transport of species in fluids or porous media. It integrates advection, diffusion, and dispersion with homogeneous and heterogeneous reactions such as aqueous speciation, sorption, redox transformations, and precipitation–dissolution. Mathematically, it is formulated as systems of partial differential equations combining mass-balance with kinetic or equilibrium reaction terms. Reaction transport modeling is central for predicting contaminant fate, nutrient cycling, mineral alteration, and biogeochemical dynamics in groundwater, soils, aquatic systems, and engineered reactors.
A new study led by researchers at the Earth-Life Science Institute (ELSI) at Institute of Science Tokyo challenges a long-standing assumption about Earth's most extreme ice ages. Using numerical geochemical models, the team ...
Earth Sciences
Mar 10, 2026
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To avoid the worst effects of climate change, many billions of metric tons of industrially generated carbon dioxide will have to be captured and stored away by the end of this century. One place to store such an enormous ...
Earth Sciences
Mar 6, 2026
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Researchers in Belgium have unveiled a striking chemical reaction in which ripples along a frozen reaction front resemble the rays of a shining star. Publishing their results in Physical Review Letters, Anne De Wit and colleagues ...
Human activities add large quantities of nitrogen to the environment, much of which gets washed into streams and rivers. These waterways transport some of that nitrogen to the oceans, but they also remove a significant portion ...
Ecology
Jan 19, 2026
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26
Two new publications remap the understanding of reverse weathering in the scientific community. The Dauphin Island Sea Lab's Senior Marine Scientist, Dr. Jeffrey Krause, played a key role in both projects, which include several ...
Earth Sciences
Dec 2, 2025
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Researchers from the Institute for Bioengineering of Catalonia (IBEC) and CIBER-BBN, in collaboration with teams from the University of Barcelona (UB) and the Institute of Chemical Research—cicCartuja, University of Seville-CSIC, ...
Cell & Microbiology
Oct 1, 2025
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