Plasma activated water

Plasmaaktiviertes Wasser (PAW) ist Wasser, das durch eine Plasmabehandlung veränderte Eigenschaften hat und unter anderem zur Desinfektion eingesetzt wird.

How is plasma-activated water produced?

Plasma-activated water can be produced in different ways. One possibility is to focus a cold atmospheric pressure plasma in the form of a plasma jet directly on water. Another possibility is to ignite cold atmospheric pressure plasma in a discharge chamber and to blow the plasma-activated air into the water to produce PAW.

This plasma process changes the chemical composition of the water and creates reactive oxygen and nitrogen species (RONS) in the water, some of which dissolve in the water and also react with the water to form other species. However, there is no concrete specification of PAW, as the composition of the RONS is highly dependent on the respective treatment parameters.

Generation with PlasmaBrush PB3

When generating PAW with the plasma jet of the PlasmaBrush PB3, the plasma jet is focused directly at the water.

Durch diese Art der Erzeugung des PAW entstehen im Stoffgemisch mehr Stickoxide.

Generation with the MediPlas system

When generating PAW with the MediPlas system, the plasma in the MediPlas is ignited and the plasma-activated air is blown into the water.

This type of PAW generation produces more ozone in the mixture of substances.

Characteristics

This leads to a change in pH, redox potential and electrical conductivity of the water. In addition, PAW has an antimicrobial effect, which is mainly attributed to dissolved ozone and hydrogen peroxide, as well as nitric acid. Plasma activated water, generated only from electricity, water and air, is considered a favorable disinfection solution whose biocidal effect lasts from a few minutes to a few months, depending on the microorganisms.

What is plasma-activated water used for?

Due to the generation of reactive oxygen and nitrogen species (RONS), PAW is used in various applications:

• Surface disinfection
• Food decontamination
• Improved germination of seeds and plants
• Cleaning of medical devices
• Use as a fertilizer for improved plant growth

If you would like to know more about plasma-activated water or would like a personal consultation, please contact our specialist Dr. Christian Bäuml