How catalysts remove dangerous nitrogen oxides
Catalysts belonging to the zeolite family help to remove toxic nitrogen oxides from industrial emissions. Researchers at the Paul Scherrer Institute PSI have now discovered that their complex nano porous structure is crucial. Specifically, individual iron atoms sitting in certain neighbouring pores communicate with each other, thereby driving the desired reaction.
Mitigating the consequences of heavy rainfall with Blue-Green Infrastructure
During heavy rainfall, sewage systems are frequently overloaded, leading to untreated wastewater being discharged into surface waters. Modelling techniques used by researchers now show that the volume of such combined sewer overflows could more than triple as a result of climate change However, these studies also reveal that this increase could be avoided through the use of Blue-Green Infrastructure, such as infiltration basins, retention ponds, and porous pavements.
A stiff material that stops vibrations and noise
Materials researchers have created a new composite material that combines two incompatible properties: stiff yet with a high damping capacity.
A peak shows the diversity of a forest
Its preservation benefits many others: the umbrella species. This is the role played by the white-backed woodpecker for beetles that feed on dead wood. This rare bird is therefore an indirect indicator of biodiversity, as researchers at BFH-HAFL have shown.
How personal care products affect indoor air quality
An EPFL study has revealed the impact of five common personal care products when they're used in enclosed spaces. Surprisingly, when they come into contact with ozone, the products spark chemical reactions generating new air pollutants.
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