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- Underestimated diversity of toxins from cyanobacteria
The guidelines of the World Health Organization (WHO) list only four substances produced by cyanobacteria. This is a small fraction of all the metabolites that can have ecotoxicological effects suc...
- Microbial cleaning crew scours sewage plants
Ciliates and rotifers are the 'cleaners' in sewage treatment plants. That is the result of a study by Jule Freudenthal and Dr Kenneth Dumack in the research group of Professor Dr Michael Bonkowski ...
- High Performance Ceramics against water germs
Removing pathogens from drinking water is especially difficult when the germs are too tiny to be caught by conventional filters. Researchers at Empa and Eawag are developing new materials and proce...
- Tracking the course of the COVID19 pandemic in wastewater
The novel coronavirus has been successfully detected in wastewater - even at low concentrations, in samples collected at an early stage of the outbreak. Researchers at EPFL and Eawag are now workin...
- Toxicity of blue-green algae and challenges for risk assessment
Freshwater lakes are teeming with blue-green algae that produce a heady cocktail of substances. Little is known as yet about the health risks associated with these substances, although a review of ...
- What happens to soils in weightlessness?
In the future, astronauts on long missions in space will have to take care of their own farming. But will that even work? An unusual experiment by Eawag researcher was designed to find some of the ... - Soil bugs munch on plastics
Thin mulch films made of polyethylene are used in agriculture in numerous countries, where they cause extensive soil contamination. Researchers at ETH Zurich and Eawag have now identified an altern... - Glyphosate eliminated by cyanobacteria
Researchers from Agroscope and Eawag have discovered that, under certain conditions, the herbicide glyphosate is rapidly degraded in Lake Greifen (Greifensee). The evidence strongly suggests that t...
- Bromate formation: a problem for wastewater ozonation?
In the coming years, around a hundred wastewater treatment plants (WWTPs) across Switzerland are to be upgraded with an additional treatment step in order to eliminate micropollutants. The method o...
- Linking cell-population to whole-fish growth
Before new chemicals can be approved, environmental risk assessments have to be carried out. But conventional toxicity testing with live fish is costly and time-consuming, and new substances contin... - Reducing Trichloramine in pool water
Chlorination of water in swimming pools leads to the formation of trichloramine, a potentially harmful compound. How much of this by-product is formed depends on the amount of chlorine in the water...
- Toxic effect of silver particles on algae examined
It has long been known that, in the form of free ions, silver particles can be highly toxic to aquatic organisms. Yet to this day, there is a lack of detailed knowledge about the doses required to ...
- Massive groundwater withdrawals promote arsenic transport into an uncontaminated aquifer
The 6.5 million inhabitants of Vietnam's capital, Hanoi, are facing a growing threat: as more and more water is pumped from a deep - previously uncontaminated - aquifer, arsenic-laden water from sh... - Barely any nanosilver from consumer products in the water
Nanosilver in wastewater can cause severe environmental damage if it occurs as a metal. A study conducted within the scope of the National Research Programme "Opportunities and Risks of Nanomateria...