Ozone Machine Review! Do Ozone Machines Work? Are Ozone Machines Safe? How do Ozone Machines Work?

Ozone Machine Review! Do Ozone Machines Work? Are Ozone Machines Safe? How do Ozone Machines Work?

How do ozone generators work? Ozone generators apply a electrical charge to the air that passes through. This splits apart some normal oxygen atoms into unstable single atoms, which bond with other O2 molecules to form O3.

How Ozone Generators Work
You may have heard of an ozone generator, but you may not know how an ozone generator works. An ozone generator, or ozone machine, is a device that converts oxygen from various sources such as ambient air, dry air, or concentrated oxygen into ozone. Ozone generators produce ozone (O3) by adding energy to oxygen molecules (O2), which causes the oxygen atoms to part ways and temporarily recombine with other oxygen molecules. The ozone is then used for water disinfection and air purification. Ozone generators can come in small hand-held sizes, all the way up to large-scale industrial models that can produce several hundred grams of ozone each hour. Industrial ozone generators work very similar to ambient air units except they require very clean and very dry air or oxygen and have a corona cell specially designed to generate very high ozone concentrations.

Ozone generators apply an electrical charge to the air that passes through. This splits apart some normal oxygen atoms into unstable single atoms, which bond with other oxygen molecules to form ozone. (Image not to scale.)

Once the ozone is produced it reacts with a pollutant, bacteria, virus, or mold, and breaks it down into less complex (and typically less harmful) molecules through a process called oxidation. Ozone that has not reacted with other molecules will decompose into oxygen over time. Ozonation destroys odors, and disinfects air, water, and other materials. It has even been approved by the USDA and FDA for use on food.

Although many manufacturers claim that ozone will render almost every contaminant harmless, it is important to follow safety guidelines, understand the structure of the contaminants, and have an ozone expert properly size the ozone generation.

Ozone Generation
The ozone generation process occurs naturally in the environment in one of two ways: Lightning strikes or Sunlight. After a thunderstorm, we probably all recognize the smell of ozone. The fresh, clean, spring rain aroma that we notice after a storm is most often a result from nature's creation of ozone. The second method is ultraviolet light from the sun. Through this method, oxygen in the presence of the sun’s UV light can be broken down and form into ozone.

Ozone generators recreate these processes in a controlled setting. This leads into two types of ozone generators: Corona discharge generators and UV light generator

Corona Discharge
These machines create ozone by taking oxygen and forcing it forcing it through a high voltage metallic grid. The high voltage splits apart the oxygen molecules into single atoms. These atoms then attach to other O2 molecules in the air to form ozone (O3.)

A few advantages of using corona discharge are that it creates a consistent ozone output, it generates high ozone concentrations, it provides fast organic (odor) removal, and it is ideal for water applications.

Ultraviolet (UV) Light
This process of ozone generation is similar to how the sun’s ultraviolet radiation splits O2 to form individual oxygen atoms. UV light changes oxygen into ozone when a wavelength at 254 nm (nanometers) hits an oxygen atom. The molecule (O2) splits into two atoms (O) which combine with another oxygen molecule (O2) to form ozone (O3). UV Light occurs naturally through the sun rays, but this process is considered to be less efficient than corona discharge, according to InterNACHI.

The advantages of using UV Light include a lower cost than corona discharge, it is simpler to assemble and use, and the ozone output using UV Light is less affected by humidity.

Types of Ozone Generation Feed Gas
Due to the instability of the ozone molecule, it has a short life. Therefore, it cannot be stored or transported. Ozone must be generated on-site. Depending on your specific application and/or limitations, ozone can be created from one of three sources: Ambient Air, Dry Air, or Concentrated Oxygen. Here is a breakdown of each option.

Ambient Air
Ambient Air refers to air that is available in the environment, whether it is indoors or outdoors. This source does not have a high concentration of oxygen, so it is used in machines that produce low levels of ozone.

Advantages:
Free to use
Readily available
Disadvantages:
Requires regular corona cell maintenance
Can cause electrical component failure due to dirt or insects that can get lodged in the corona cell or corona plate
Dry Air
Dry Air refers to air that has moisture removed so the dew point is -70° F or lower. This source will also produce low levels of ozone.