Our glossary explains technical terms from the area water research. We hope it facilitates the understanding of this publication. If you have comments or suggestions, please use our
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Zeolite-supported Pd catalysts
The active substances of a catalyst are often precious metals of the platinum group, in this case palladium (Pd). In a conventional vehicle catalytic converter, these fine precious metal particles are applied to porous ceramic surfaces to maximise contact with the medium to be cleaned. In this case, the same function is performed by zeolites, both in their naturally occurring form and as industrially manufactured minerals with a large surface area (porosity). They are also referred to as “molecular sieves”. The tiny palladium particles in the pores of the zeolites break down the small contaminant molecules, while the large sulphurous molecules, which also occur in groundwater, remain outside.
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Zero control
Untreated control serving as the standard in experiments against which the other, treated samples are measured.
