Odor Removal Options
Odor removal is a critical part of almost any restoration job. There are a variety of options available from masking agents to foggers to ozone and hydroxyl generators, and so on. Today, there is a rather big inner-industry debate being waged over the benefits and dangers of those latter two options. There is a clear advantage to using machines to eliminate odors from spaces and items rather than simply trying to mask them.
This time around, odor removal experts are taking the stand to talk odor removal science to help you make an educated decision about which technology is right for your company.
Meet the Experts
What is the basic science behind your technology?
DH: Ozone is created when oxygen molecules (O2) are ‘sliced’ in half; the single oxygen atoms (O1) bond with ambient O2 molecules, creating ozone (O3 molecules). Ozone generators also produce ozone using these two principles- UV light and Corona Discharge.
RM: Manmade ozone is produced by two separate processes. One is with UVC ultraviolet light in the 185-nanometer wavelength. The second process is called corona discharge, which produces higher concentrations of ozone than UVC, for faster deodorization. Titan produces hydroxyls by subjecting humidity in the air to UVA light in the 365 to 385 nanometer wavelengths in the presence of a catalyst, usually titanium dioxide. This photocatalyst process splits an H off of H2O leaving OH – hydroxyl and an H.
TM: The Odorox technology was patented because it is the only process able to produce hydroxyl radicals that exit the chamber of the machine to eliminate odors not just in the air, but more importantly, odors that have been adsorbed by contents and structures. This is done by using multiple high energy ultraviolet lights inside the chamber of the hydroxyl machines. It converts water naturally found in the air to hydroxyl radicals, as well as oxy and peroxy- radicals that exit the machine. The hydroxyl radicals that exit the machine are able to eliminate odors, not mask or otherwise cover them up, by disassembling all of the odor molecules including those found deep inside porous materials.
How effective is your respective technology at removing the most common odors restorers see – like smoke, mold, biohazard waste, etc?
DH: The way ozone permanently neutralizes odors is by oxidation. The third oxygen atom in the molecule is loosely bonded to the stable O2 molecule, detaching itself from the O2 when it comes into contact with a receptive odor molecule. This permanently alters the molecular structure of the odor molecule, rendering it odorless. It doesn’t simply cover/mask odors with another odor, it basically removes the odor from existence.
RM: Ozone is faster than hydroxyl at removing odors but must only be used in un-occupied areas. Ozone is great at removing any organic gaseous compound once the source has been removed. Ozone is great for use on mold, mildew, smoke, VOCs, bacteria, virus, etc… Titan hydroxyl generators are not for use as surface microbial kill. They are for airborne microbial kills only, but are great for area and content deodorization.
TM: Hydroxyls are the second strongest oxidant in the world behind atomic fluorine. They are one million times more reactive than ozone, which means they break down a much broader range of odors and pathogens compared to ozone. We have yet to find an odor that Odorox cannot break apart. However, the most difficult project is typically pet urine. This is not because the ammonia is hard to break apart - it’s easy. It’s because the pets were probably there for years and the urine has soaked deep into the flooring which makes it difficult for contractors to fully remove the source. It’s important to remember that disaster-related projects are different and there are always variables to consider when assessing a project. Proper training always helps.
To know when the job is done, turn off the machines and go smell porous materials where you know the odor was present - drywall, cabinets, couches, clothes, etc. If the odor is gone, the job is done. If the odor is still there, run the machines longer or move them around.
There you have it. Both sides of the argument, and evidence proving both hydroxyl and ozone work to remove odors during restoration and remediation work.
The Ozone vs. Hydroxyl Debate
Extracted from Restoration & Remediation Magazine
Your basic cleaning service is not going to have the expertise to effectively deodorize your home. Take advantage of SERVPRO of Sunrise residential cleaning services to remove unwanted odors.