Researchers at KIT have developed a promising method for removing harmful steroid hormones from water using electrochemical membrane reactors with carbon nanotube membranes. Their findings show that adsorption of steroid hormones on the carbon nanotubes does not hinder their degradation.
Steroid hormones are among the most widespread aquatic micropollutants. They are harmful to human health, and they cause ecological imbalances in aquatic environments. At the Karlsruhe Institute of Technology (KIT), researchers have investigated how steroid hormones are degraded in an electrochemical membrane reactor with carbon nanotube membranes. They found that adsorption of steroid hormones on the carbon nanotubes did not limit the hormones' subsequent degradation.
Supplying clean water to people around the world is one of the great challenges of today and tomorrow. Various micropollutants (organic and inorganic substances) are present in low concentrations in wastewater but can still be harmful to humans and the environment. Considerable risks are posed by endocrine-disrupting substances, such as steroid hormones, which can affect the hormonal system. Such substances are present in pharmaceuticals, contraceptives and other products. Though difficult to detect in water, they can seriously harm human health and disrupt the ecological equilibrium of aquatic environments.Steroid hormones can be neither detected nor removed with conventional water treatment methods. Electrochemical oxidation (EO) is gaining recognition as a promising approach for their removal; EO systems consist of an anode and a cathode connected to an external power source. The electrical energy at the electrodes is varied (modulated), leading to the oxidation and degradation of pollutants at the anode's surfac
WATER TREATMENT MICROPOLLUTANTS STEROID HORMONES ELECTROCHEMICAL OXIDATION CARBON NANOTUBES
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