Contaminant transport refers to the physical and chemical processes governing the movement and fate of pollutants within environmental media such as groundwater, surface water, soil, and the atmosphere. It encompasses advection, dispersion, diffusion, sorption, volatilization, degradation, and transformation reactions that control contaminant distributions and concentrations over space and time. In research, contaminant transport is described by coupled partial differential equations derived from mass conservation, often incorporating multiphase flow, reactive transport, heterogeneity, and scale-dependent parameters. Accurate characterization and modeling of contaminant transport are critical for risk assessment, remediation design, and prediction of long-term contaminant plume evolution in engineered and natural systems.
Johannesburg's air quality has never really been measured systematically. Like many other cities across the globe, scientists have battled to develop cost-effective monitoring systems that provide accurate real-time data ...
Environment
Apr 9, 2026
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Penguins living along the Patagonian coast of Argentina can serve as living monitors of their environment by using small, chemical-detecting leg bands, according to a study from the University of California, Davis, and the ...
Environment
Apr 8, 2026
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Even after one of the largest environmental remediation efforts in California history, dangerous levels of lead persist in residential neighborhoods surrounding a former battery smelter in Southeast Los Angeles, according ...
Environment
Apr 6, 2026
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A new international study offers insights into the health risks posed by crops' absorption of "contaminants of emerging concern" (CECs) and flags knowledge gaps the authors say must be addressed. CECs include pharmaceuticals, ...
Agriculture
Apr 1, 2026
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In many parts of the world, including China, soil acidification is reducing agricultural yields. Recycling animal manure can help counteract this acidification and is therefore a key component of circular agriculture. However, ...
Environment
Mar 31, 2026
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It seems like every day a new study finds tiny plastic particles called microplastics where they should not be: in our bodies and our food, water and air.
Environment
Mar 26, 2026
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Combined sewer overflows (CSOs) could be contributing far more pollution to England's rivers than previously recognized, according to new research involving scientists from Imperial College London and Brunel University London. ...
Environment
Mar 26, 2026
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10
The bottom sediment of water bodies is an archive of all human activity. It is a reservoir of nutrients but also of harmful substances—and it can also turn into a source of emissions. "Most lakes tend to be remediated due ...
Environment
Mar 25, 2026
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7
Many people use drugs, including paracetamol, on a regular basis to treat headaches. But only part of each drug is taken into the bloodstream, while the rest is released into the wastewater through our urine when we go to ...
Environment
Mar 24, 2026
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9
Each year, antimicrobial resistance (AMR) is responsible for an estimated 1.1 to 1.4 million deaths worldwide. Now, scientists have found evidence that the spread of AMR isn't always driven by bacteria evolving to resist ...
Cell & Microbiology
Mar 24, 2026
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