A new advanced Oxidation Technology utilizing “Ionized Hydro-Peroxide” is brought to the HVAC industry for indoor Air Quality!
Oxidation is technically defined as the losing or the giving up of an electron. It can involve very complex reactions between molecules and the oxidizers that are produced. For this article we will look at some of the interactions between oxygen molecules and the different substances that they may contact. Controlled oxidation is an excellent way to destroy organics such as odors, viruses, bacteria, VOC’s and mold. Unfortunately, uncontrolled oxidation can also destroy living tissue. Fire is an example of rapid oxidation. Rust is an example of slow oxidation. As in many things, too much of a good thing can be dangerous.Some oxidizers are classified as “friendly”; which means when these oxidizers react they revert to water, hydrogen, or oxygen. Friendly oxidizers are always oxygen based. They include hydroxyl radicals, low level ozone, hydrogen peroxide, and oxygen.
Government Safety Limits
*2. Hydroxyradical (OH)
Too fast to measure
*3. Ozone (O3)
*4. Hydrogen Peroxide (H2O2)
5. Chlorine (CL)
*6. Oxygen (O2)
*Friendly Oxygen-Based Oxidizers
Hydroxyl radicals are almost theoretical in that they are so reactive that they are created and decomposed almost instantaneously. They are typically confined to the reaction surfaces of the catalyst where they are made. They can be difficult to control, and accordingly are not always practical to use for indoor air treatment systems.Ozone was discovered in the late 1800s in France and has been used extensively for water and food purification. Unlike America, Europe prefers ozone over chlorine for water purification. In the 1980s, ozone began to appear in air purification primarily as a way to destroy various odors including smoke.
Commercial ozone generators are still very popular with fire and flood restoration companies. The use of ozone as an indoor air quality method for occupied spaces quickly was picked up by Sharper Image with a product called “Ionic Breeze”, basically an ion generator that produced ozone. Numerous State Attorney Generals filed suit against Sharper Image for false and misleading advertising which ultimately forced the company into bankruptcy.
Ozone is an effective oxidizer, but it carries a health warning at a relatively low dosage. A look at Table 1 of oxidizing agents shows ozone as number 3, just below fluorine and the hydroxyl radical, which are far too dangerous to consider.
Hydrogen Peroxide (H2O2) in levels over 1 ppm can be a health hazard.
Some will say that Hydrogen Peroxide (H2O2) in levels over 1 ppm can be a health hazard. This is probably true, but high levels of almost everything can be a health hazard. After all, too much oxygen can cause oxygen toxicity or poisoning, which will lead to cell damage and death.(3) Even consuming too much water can be fatal.
Hydroperoxides are known as Mother Nature’s natural, enviro-friendly cleaning agent. Maybe mother did know best when she said “Go play outdoors, it’s healthier”. Ionized hydrogen peroxides are responsible for the air smelling so clean after a thunder storm. The combination of ions from lightning, water and sun increase the natural level of hydrogen peroxide, thereby cleaning the air. Typical outdoor levels of hydroperoxides run between .01 to .03 ppm. The Government safety (2) guideline on hydroperoxide gas is 1.0 ppm, .02 ppm (typical outdoor levels) is 1/50 or well below the Government safety limits.
Many of these studies and lab tests were done on airborne contaminants as well as surfaces. This is important because, as with the Norwalk Virus, much of the spread of the virus was from touching contaminated surfaces. The ionized hydroperoxide molecules settle on surfaces and continue to kill microbes.
The PHI technology has been extensively employed by the food industry for the last 17 years. Also, medical facilities have embraced it to reduce rates of H1N1, SARS, C-Diff, MRSA, etc. Schools use it as it can reduce absenteeism of students and teachers. One PHI validation study was to destroy the microbes of a sneeze, which it did-99% at three feet.
PHI has been tested and approved by the military and homeland security. Hundreds of cruise ships have installed PHI technology throughout the ship, which has helped eliminate the Norwalk Virus problem plaguing that industry for years. Thousands of hotel rooms, chain restaurants and hospitals also utilize PHI technology.
One of the best features is, with well over one million PHI cells in use worldwide over the past 15 years, PHI has a perfect safety record! RGF has brought PHI technology to the HVAC industry and has expanded their PHI product line to include residential units.