Department Environmental Chemistry

Projects

Urban areas

Characterization of wastewater treatment with suspect und non-target screening for the evaluation of ozonation and activated carbon treatment
Formation and fate of transformation products in water treatment with ozone and biological post-treatment
Im Fokus stehen Produktgruppen wie die Pflanzenschutzmittel, Biozide und Veterinärpharmaka.
Pilot scale advanced treatment of wastewater with granular activated carbon (GAC) and combined with ozonation (O3/GAC) at WWTP Glarnerland
Development of a difference analysis for LC-MS/MS data to identify polar transformation products and assessment of environmental relevance
SOLUTIONS for present and future emerging pollutants in land and water resources management
EcoImpact is an Eawag-wide interdisciplinary research effort, strongly motivated by the planned modifications of the Swiss wastewater treatment plants.
Managing micropollutants in surface waters in a transboundary context: On the way to appropriate management Units

Agriculture

The pollution of our water bodies with organic trace substances presents a challenge for water protection...
Input of plant protection products into surface waters in rural landscapes: What is the relevance of hydraulic shortcuts ?
...is an inter- and trans-disciplinary research project, studying environmental, health and institutional dimensions of pesticide use in tropical settings
Managing micropollutants in surface waters in a transboundary context: On the way to appropriate management Units
According the Swiss constitution, the Swiss agriculture has to fulfill several, partially conflicting goals such as agricultural production on the one hand and

Analysis

Identification of transformation products and assessment of environmental relevance
The river Rhine and its tributaries are a source of drinking water for more than 20 million people. At the same time treated waste water from numerous industrial sites and from the 54 million people living in the catchment area ends up in the rivers...
Various aquatic organisms produce extracellular biomolecules, e.g., enzymes to catalyze reactions, chelators to transport metals, or toxins to fight competitors...
SOLUTIONS for present and future emerging pollutants in land and water resources management
Development of a difference analysis for LC-MS/MS data to identify polar transformation products and assessment of environmental relevance
In order to obtain a more comprehensive picture of the contamination of Swiss groundwater with polar organic micropollutants...

Process studies

Our research is part of an EU International Training Network (ITN) focusing on Natural Toxins and Drinking Water Quality: From Source to Tap (NaToxAq)
N-nitrosamines such as N-nitrosodimethylamine (NDMA) are of public and regulatory concern because these potent carcinogens can be formed as unintented by-products during drinking and waste water disinfection/oxidation.
Nitroaromatic explosives persist in the subsurface in different phases (e.g., bound to soil or sediment matrix or as solid-phase residues) and it is extremely challenging to assess biotic and mineral-catalyzed degradation. With the combined analysis of C, N, and H isotope fractionation, we can quantify transformation, even if it takes place via several potentially competing pathways over time-scales of decades.
The extension of the CSIA approach to micropollutants is challenging for both analytical and conceptual reasons. In a collaborative SNF-Sinergia project, we aim at elucidating the fate of pesticides by multi-element isotope analysis on the field scale.
Our research on fate of pharmaceuticals is motivated by investigating transformation pathways and kinetics to better understand the lifetime of such biologically active compounds in our freshwater Systems...
Identification of transformation products and assessment of environmental relevance
A contemporary view of rivers recognizes them as having multiple vertical and lateral flow paths serving as bidirectional links to the surrounding landscape...
Predicting environment-specific biotransformation of chemical contaminants

Modelling

Managing micropollutants in surface waters in a transboundary context: On the way to appropriate management Units
Predicting environment-specific biotransformation of chemical contaminants
The screening of aquatic systems for known and unknown polar and semi-polar organic micropollutants relies heavily on analytical chemistry, foremost high-resolution mass spectrometry (HRMS) coupled to liquid chromatography (LC)....
Biodegradation simulation tests are an essential element of environmental risk assessment in most chemical regulations.