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  2. Ozone and biology - Wikipedia

    en.wikipedia.org/wiki/Ozone_and_biology

    Where non-targeted antibiotic action is required, such as in water purification, it is widely used. Society is requiring the use of fewer chemicals with less toxic byproducts in water purification and food production. As ozone breaks down to oxygen rather than potentially unhealthy compounds it is now being used more widely.

  3. Ozone - Wikipedia

    en.wikipedia.org/wiki/Ozone

    This is the most common type of ozone generator for most industrial and personal uses. While variations of the "hot spark" coronal discharge method of ozone production exist, including medical grade and industrial grade ozone generators, these units usually work by means of a corona discharge tube or ozone plate.

  4. Chemical oxygen generator - Wikipedia

    en.wikipedia.org/wiki/Chemical_oxygen_generator

    The chemical reaction is exothermic and the exterior temperature of the generator will reach 260 °C (500 °F). It will produce oxygen for 12 to 22 minutes. [2] [3] The two-mask generator is approximately 63 mm (2.5 in) in diameter and 223 mm (8.8 in) long. The three-mask generator is approximately 70 mm (2.8 in) in diameter and 250 mm (9.8 in ...

  5. Oxygen concentrator - Wikipedia

    en.wikipedia.org/wiki/Oxygen_concentrator

    The term oxygen generator is a misnomer in that the oxygen is not generated as it is with a chemical oxygen generator, but rather it is concentrated from the air. Non-medical oxygen concentrators can be used as feed gas to a medical oxygen system, such as the oxygen system in a hospital, though governmental approval is required, such as by the ...

  6. Corona discharge - Wikipedia

    en.wikipedia.org/wiki/Corona_discharge

    The work function of the electrons (the energy required to liberate the electrons from the surface) is considerably lower than the ionization energy of air at standard temperatures and pressures, making it a more liberal source of secondary electrons under these conditions. Again, the source of energy for the electron-liberation is a high ...

  7. Oxygen plant - Wikipedia

    en.wikipedia.org/wiki/Oxygen_plant

    A simple adsorber is a column filled with layers of specially selected adsorbents – granular substances preferentially adsorbing highly adsorbable components of a gas mixture. Where gaseous oxygen purity is required at the level of 90-95% with the capacity of up to 5,000 Nm 3 per hour, adsorption oxygen plants are the optimal choice. This ...

  8. Ground-level ozone - Wikipedia

    en.wikipedia.org/wiki/Ground-level_ozone

    In June to August, photochemical ozone production causes very high concentrations over the East Coast of the US and China. Ground-level ozone ( O 3 ), also known as surface-level ozone and tropospheric ozone , is a trace gas in the troposphere (the lowest level of the Earth's atmosphere ), with an average concentration of 20–30 parts per ...

  9. Air ioniser - Wikipedia

    en.wikipedia.org/wiki/Air_ioniser

    An air ioniser (or negative ion generator or Chizhevsky's chandelier) is a device that uses high voltage to ionise (electrically charge) air molecules. Negative ions, or anions , are particles with one or more extra electrons , conferring a net negative charge to the particle.