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Current issue

ELEKTRO 7/2021 was released on October 1st 2021. Its digital version will be available on November 1st 2021.

Topic: Power engineering; Electricity quality; Renewable Energy

Main article
Local specifics of South-Bohemian region regarding usage of alternative fuel cars

SVĚTLO (Light) 4-5/2021 was released 9.17.2021. Its digital version will be available 9.17.2021.

Lighting installations
Lighting reconstruction of underpass and platforms of Ústí nad Orlicí railway station

Public lighting
The lighting of park at Episcopal Residence of Ostrava-Opava in Ostrava
Outdoor lighting systems and intrusive light
Generel of public lighting 9th part
Environmental viewpoint

Instant water cleaning method 'millions of times' better than commercial approach

2. 7. 2021 | Dweb News | dweb.news

A water disinfectant created on the spot using just hydrogen and the air around us is millions of times more effective at killing viruses and bacteria than traditional commercial methods, according to scientists from Cardiff University.

Their new method works by using a catalyst made from gold and palladium that takes in hydrogen and oxygen to form hydrogen peroxide—a commonly used disinfectant that is currently produced on an industrial scale. In their study, the team tested the disinfection efficacy of commercially available hydrogen peroxide and chlorine compared to their new catalytic method.

Efficient desinfection of water

Each was tested for its ability to kill Escherichia coli in identical conditions, followed by subsequent analysis to determine the processes by which the bacteria were killed using each method. The team showed that as the catalyst brought the hydrogen and oxygen together to form hydrogen peroxide, it simultaneously produced a number of highly reactive compounds, known as reactive oxygen species (ROS), which the team demonstrated were responsible for the antibacterial and antiviral effect, and not the hydrogen peroxide itself. The catalyst-based method was shown to be 10,000,000 times more potent at killing the bacteria than an equivalent amount of the industrial hydrogen peroxide, and over 100,000,000 times more effective than chlorination, under equivalent conditions.

Read more at Dweb News

Image Credit: Unsplash

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