COVID-19 & UV Inactivation
Amid the COVID-19 pandemic, many people around the world are asking if UV light can potentially play a role in helping to combat the spread of this virus. These questions are mainly associated with UV light’s ability to treat surfaces, equipment, and devices.
The International Ultraviolet Association (IUVA) – a nonprofit dedicated to the advancement of ultraviolet technologies to help address public health and environmental concerns – has assembled a group of leading experts from around the world to develop guidance on the effective use of UV technology, as a treatment measure, to help reduce the transmission of COVID-19.
The IUVA believes that UV inactivation technologies can play a role in a multiple barrier approach to reducing the transmission of the virus causing COVID-19, SARS-CoV-2, based on current treatment data and empirical evidence. For more information, visit iuva.org/COVID-19.
How UV Light Treats Water
Trojan Technologies designs and manufactures systems that treat water with UV light in the UV-C spectrum – we do not design or manufacture systems or products that treat surfaces or air.
In water treatment applications, UV light provides rapid, effective inactivation of microorganisms through a physical process. When microorganisms are exposed to UV light, they are instantaneously rendered incapable of reproducing and infecting. The process adds nothing to the water but UV light, has no impact on chemical composition or dissolved oxygen content, and does not create by-products.
Microorganisms are inactivated by UV light as a result of damage to nucleic acids. The high energy associated with short wavelength UV energy, primarily at 254 nm, is absorbed by cellular RNA and DNA. This absorption of UV energy forms new bonds between adjacent nucleotides, creating double bonds or dimers. Dimerization of adjacent molecules, particularly thymine, is the most common photochemical damage. Formation of numerous thymine dimers in the DNA of microorganisms prevents replication.
UV light has demonstrated efficacy against microorganisms, including those responsible for cholera, polio, typhoid, and hepatitis.
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