Oxidize IT Science on Ozone Laundry Systems by guest author

The Science on Ozone Laundry Systems
by buy disulfiram online canada Jenn Beem

When we think about doing laundry we typically think of laundry detergents, fabric softeners, and hot water. Skin irritations and allergic reactions are often from detergents and other soaps left in fabrics. Most individuals use laundry detergent for flowery, “fresh” smelling odors. Laundry Detergents and fabric softeners contain Volatile Organic Chemicals, below are just a few of the hazardous materials.

Phosphates: Manufacturers use these to make detergents more effective in hard water, and to help prevent dirt from settling back on clothes when they’re washing. These chemicals have long been associated with environmental damage, particularly in our streams and waterways. They cause algae blooms that damage ecosystems.

Cleaning agents (surfactants): These are included in the formula to help the product clean better.

Stabilizers: These chemicals help stabilize the formula, so that it lasts longer on the shelf.

Bleach: It’s known to irritate skin, eyes, and lungs, and when it mixes with wastewater, it can form toxic organic compounds that have been linked with respiratory issues, liver, and kidney damage.

Brighteners: Chemicals that remain on the clothes to absorb UV light and help clothes “appear” brighter. These chemicals also remain on the clothes so they are most likely to come into contact with skin.

EDTA: Many detergents have eliminated these, but they’re often using ethylene diamine tetra-acetic acid (Ethylenediaminetetraacetic acid-EDTA) in its place, which does not readily biodegrade, and has been found to be toxic in animal studies.

Fragrance: Manufacturers combine many chemicals to produce a fragrance—so you’ll believe your clothes are clean because they smell clean—and they don’t have to list those chemicals on the label because of trade protection.

Ozone as a detergent-less laundry cleaning solution kills micro-organisms found in dirty laundry – and does so 3000 time faster than bleach! Dr. Sheila Baker, Professor in the Department of Chemical Engineering at the University of Missouri-Columbia, scientifically examined the technology behind the use of Ozone for detergent-less laundry solutions. Her research is focused on designing task-specific ionic liquid systems, nano-materials and their hybrids for clean energy applications. In her paper, Report on Ozone Laundry Systems, Dr. Baker finds that “Ozone does work for removing stains,” examining how it works, its effectiveness, as well as the threefold benefits of ozone. Below are excerpts from that report.

History
Ozone for commercial laundry applications was first introduced in the late 1970s-early 1980s in penal institutions but their performance was poor. (1) A second generation in the 1990s had better performance, and their performance has increased since then due mostly to a better understanding of how these systems work. By 2009, there were over 4,000 commercial laundry facilities that were using ozone laundry systems. (1) Some newer systems today offer controlled and variable levels of ozone and sensors that monitor and sometimes control ambient ozone levels.

How Ozone Works
Ozone does work for removing stains from laundry. It works through an oxidation mechanism whereby ozone and an OH radical, a breakdown product from ozone and water, can both work as oxidants. Ozone is a superb antimicrobial agent and can eliminate even superbugs when used properly. Also, ozone is very economical. It works best in cold water and relaxes the fabric so no softener is required and shortens drying times. Due to the cold water and shorter dryer times, fabric life is often extended. As for whitening abilities, ozone is similar to hydrogen peroxide. The method for cleaning by ozone in water is based on two reaction mechanisms – a direct and an indirect mechanism. (2,3,5) The direct method occurs when ozone acts as the oxidizer itself to break chemical bonds. The indirect method involves ozone reacting first with water to produce OH-radicals followed by the OH-radicals oxidizing chemical bonds. When ozone and OH-radicals come in contact with soils and stains in linen, they help break chemical bonds to release the stain or soil. One kind of reaction (direct or indirect) will dominate, depending on various factors, such as temperature, pH and chemical composition of the water. The higher the pH and temperature, the more OH-radicals will be produced. While OH-radicals have even greater oxidizing power than ozone, they are very short-lived in solution.

Effectiveness
Ozone is considerably more effective at lower water temperatures such as cold or ambient temperature water. This is due to its increased stability and higher solubility at lower water temperatures. Thus, it is recommended to use ozone on cold water cycles. This saves energy from not needing to heat the water.
In a recent study, when compared to hydrogen peroxide, ozone utilized in cotton preparation was able to obtain a Stensby degree of whiteness of 81 of scoured samples which was comparable to hydrogen peroxide. (5) Further, no strength loss of the fabric was observed. As compared to chlorine bleach, the levels of ozone present may not always be high enough to offer the same level of bleaching stains. (1) For these cases, some chlorine may be required in conjunction with ozone to achieve the highest effectiveness. If a bleach cycle is required, a scouring agent (acid) or multiple rinse cycles may be required to lower the pH so as to prevent skin irritations. However, ozone can often be used with colored fabric without the concern for bleaching the fabric, unlike chlorine bleach. Further, for disinfection purposes, you can use ozone alone instead of bleach. Ozone can reduce or eliminate the need for fabric softeners. Fabric softeners increase drying times due to the way they coat fabrics. However, the way in which ozone and oxygen assist in relaxing the fabric, more water is extracted during the spin cycle so that less drying time is needed.  Due to the cold water and shorter dryer times, fabric life is often extended. Basically, ozone oxidizes the soil in the fabric allowing it to detach easier.



 

Benefits of Ozone
The reported benefits of ozone are three-fold: economical, microbiological, and environmental.

Economical

A California hotel conducted a study over a 2-month period in a facility with 104 rooms to compare traditional an EcoTex ozone laundering system. (1) They found the annual costs of ozone vs. traditional laundry was less in the categories of electrical (30% savings), natural gas (81% savings), chemical (21% savings), water (26% savings), and labor (39% savings). A 2012 hotel study entitled ‘Ozone Laundry – 95 Room Hotel Payback Study” showed similar results and a savings of almost $780 per month. (6) They found that the ozone laundry system saved over 47% of fuel costs for boiler and dryer operation, with a 74% savings for the boilers (hot water) alone. In addition, the system eliminated softener costs, reduced electrical costs for the washers and dryers by about 13%, and reduced linen replacement costs by 10%.

Microbiological
Ozone has been shown to effectively control, disinfect, and/or totally eradicate microorganisms normally found in soiled laundry in many studies.1 For example, one study found that several microorganisms such as E. coli and many types of viruses were eradicated within minutes by ozone cold water laundering. (7) Even more impressive, the same was found for two superbugs (MRSA and C. difficile). These superbugs are often resistant to traditional hot water laundry processes. However, the disinfection is a time-dependent process. Ozone is effective in killing bacteria in 3 minutes and viruses in 6 minutes. So, in this aspect ozone laundry system out perform traditional systems. It is recommended that laundry wash cycles be 10-12 minutes in order to determine a concentration over time value that is the recommended method to report compliance with U.S. EPA disinfection requirements of drinking water.

Environmental Impacts
The use of ozone for laundry also has environmental benefits. The strong oxidizing power of ozone and OH-radicals initiate the conversion of most organic components of the soiling materials into more readily biodegradable byproducts. (8) The discharged water from laundry wastewater systems that use ozone typically contain higher levels of oxygen which benefits receiving streams, lakes, and rivers by providing oxygen for the natural microorganisms to do a better job of breaking down discharged pollutants into carbon dioxide and water. (8)

Oxidizer Pro INC.
If you are interested in hearing more about how our American Made Detergent-less laundry system works, we will be happy to answer all your questions. Our revolutionizing detergent-less laundry  product is not only ecofriendly but also very safe and healthy. We look forward to speaking with you soon.
Phone: 440-746-0343
Website: www.oxidizeit.com
Email: info@oxidizeit.com


References

References
Rice, R. G.; DeBrum, M.; Cardis, D.; Tapp, C., The ozone laundry handbook: A comprehensive guide for the proper application of ozone in the commercial laundry industry. Ozone: Science and Engineering 2009, 31 (5), 339-347.

Von Gunten, U., Ozonation of drinking water: Part I. Oxidation kinetics and product formation. Water Research 2003, 37 (7), 1443-1467.

Hamilton Gordon, A.; Ribner Bruce, S.; Hellman Thomas, M., The Mechanism of Alkane Oxidation by Ozone. In Oxidation of Organic Compounds, AMERICAN CHEMICAL SOCIETY: 1968; Vol. 77, pp 15-25.

Von Gunten, U., Ozonation of drinking water: Part II. Disinfection and by-product formation in presence of bromide, iodide or chlorine. Water Research 2003, 37 (7), 1469-1487.

Eren, H. A.; Ozturk, D., The evaluation of ozonation as an environmentally friendly alternative for cotton preparation. Textile Research Journal 2011, 81 (5), 512-519.

DEL Ozone Laundry Saves Hotel $9,000 a Year. http://www.environmentalleader.com/2012/10/17/del-ozone-laundry-saves-hotel-9000-a-year / (accessed April 14, 2013).

Cardis, D.; Tapp, C.; DeBrum, M.; Rice, R. G., Ozone in the laundry industry – Practical experiences in the United Kingdom. Ozone: Science and Engineering 2007, 29 (2), 85-99.

Rice, R. G.; DeBrum, M.; Hook, J.; Cardis, D.; Tapp, C., Economic and environmental benefits of ozone in ozone laundering systems. Ozone: Science and Engineering 2009, 31 (5), 348-356.


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Oxidize It™ brand- We are super excited to have you join the Oxidize It™ family. Our Parent company, FVS INC. is now celebrating 30 years of business. The Oxidize It™ has been, and will continue to go, through advance testing and research to improve the machines inner workings. The Oxidize It™ can be used on all types of washing machines; it does not use hot water.  You do not have to use laundry detergent or laundry fabric softener, which means an average family of four can save up to $677 annually. Which is a great savings to your customers. The Oxidize It™ Detergent-Less Laundry System has a 5-year warranty and has been tested to last over 10 years.

The Oxidize It™ injects ozone into the water creating an oxidant, which opens the fibers softening, releasing soils and killing bacteria 3,000 times faster than bleach.  You may have to use a pre-stain or spot remover on spots or stains prior to washing, just like with regular laundry.

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We have included attachments to this email for you. These include information regarding what is unique about the Oxidize It™ and an informational brochure telling you more about the product itself and what it can do. We have also included three science articles one written by Dr. Sheila Baker, one by Owner Darrell Weeter on the use of ozone in laundry, and one by Jenn Beem our marketing analyst on the cost effective way to Disinfect your laundry.

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