Publications by authors named "M G M van de Schans"

Article Synopsis
  • Antibiotics are widely used in livestock, leading to environmental contamination of rivers and groundwater, yet there's insufficient data on their sources and distribution.
  • A new model, MARINA-Antibiotics (China-1.0), estimates antibiotic flows from livestock into China's rivers and groundwater, revealing that antibiotic inputs reduced in rivers but increased in groundwater from 2010 to 2020.
  • Key findings show fluoroquinolones are the main contributors to river pollution, while sulfonamides dominate groundwater pollution, indicating a need for improved strategies to address groundwater contamination due to livestock practices.
View Article and Find Full Text PDF
Article Synopsis
  • Drilling wells in unconsolidated formations aims to improve water extraction efficiency but faces challenges like potential well collapse when targeting greater depths and larger diameters.
  • Experimental investigations explore the effectiveness of various drilling fluids and additives, including bentonite, PAC, Xanthan Gum, calcium carbonate, and aluminum chloride, to enhance wellbore stability in aquifers.
  • Results show that calcium carbonate effectively forms filter cakes that improve stability, while certain formulations like 2% aluminum chloride lead to thicker, but more permeable filter cakes, impacting filtration losses and well performance.
View Article and Find Full Text PDF

Antibiotic residues, their mixture toxicity, and the potential selection for antibiotic-resistant bacteria could pose a problem for water use and the ecosystem of reservoirs. This study aims to provide a comprehensive understanding of the occurrence, concentration, distribution, and ecological risks associated with various antibiotics in the Cirata reservoir, Indonesia. In our water and sediment samples, we detected 24 out of the 65 antibiotic residues analyzed, revealing a diverse range of antibiotic classes present.

View Article and Find Full Text PDF

The recent COVID-19 pandemic has raised interest in efficient air disinfection solutions. The application of germicidal ultraviolet (GUV) irradiation is an excellent contender to prevent airborne transmission of COVID-19, as well as other existing and future infectious airborne diseases. While GUV has already been proven effective in inactivating SARS-CoV-2, quantitative data on UV susceptibility and dose requirements, needed to predict and optimize the performance of GUV solutions, is still limited.

View Article and Find Full Text PDF

The transition from linear production towards a circular agro-food system is an important step towards increasing Europe's sustainability. This requires re-designing the food production systems, which inevitably comes with challenges as regards controlling the safety of our food, animals and the ecosystem. Where in current food production systems many food safety hazards are understood and well-managed, it is anticipated that with the transition towards circular food production systems, known hazards may re-emerge and new hazards will appear or accumulate, leading to new -and less understood- food safety risks.

View Article and Find Full Text PDF