Maya Jaffe biomedical engineering student, Georgia Institute of Technology Visualize a hiker walking all day in a 100 m deep canyon beneath a cloudless sky. All morning, the floor of the canyon is shady but there is visible light reflected off the canyon walls (Figure 1a). For a while around noon, the floor of the canyon is brightly bathed in direct sunshine (Figure … [Read more...] about UV-C Effectiveness and the ‘Canyon Wall Effect’ of Textured Healthcare Environment Surfaces
Articles
UV Degradation Effects in Materials – An Elementary Overview
Chris Rockett production and applications engineer, LightSources, Inc. As ultraviolet (UV) radiation consists of photons with high energy relative to visible light, it can cause degradation in the form of physical and chemical changes in susceptible materials. The degradation effects of UV are of concern to designers and users of a wide variety of materials that are intended … [Read more...] about UV Degradation Effects in Materials – An Elementary Overview
UV Low-Pressure Lamps – Offering Many Advantages Across Multiple Areas
Wiebke Breideband project manager-marketing, Heraeus Noblelight GmbH Ultraviolet light is often used when contaminated water, air and surfaces need to be disinfected and cleaned safely. The advantages of this technology are that it is extremely economical, reliable and durable, as well as environmentally friendly. Different types of lamps can be used to generate UV light. One … [Read more...] about UV Low-Pressure Lamps – Offering Many Advantages Across Multiple Areas
Market Overview of UV Disinfection Technologies for Food Safety Applications
Molly McManus regional sales manager, AquiSense Technologies Kayla Doerzbacher applications engineer, AquiSense Technologies The first step to appreciating food safety is understanding the magnitude of the problem. Foodborne illness has a much larger reach than many people realize. Besides the obvious threat to human safety, food safety also impacts the environment and the … [Read more...] about Market Overview of UV Disinfection Technologies for Food Safety Applications
The Quest for UV Treatment Validation
Chris Hartman founder and president, Headwater Manufacturing To set the stage, it is perhaps helpful to review some of the basic science – indeed, very basic. This article looks at the issue of UV treatment from an engineering and project management perspective, not from a microbiology or food science background. The author has had the privilege to work with some of the best … [Read more...] about The Quest for UV Treatment Validation
UV Lamp Breakage: Investigation and Response
Jennifer Osgood, PE, PMP, BCEE associate, CDM Smith While UV reactor lamp breakage occurrence is uncommon, if lamp breakage does occur, utilities need to have a plan in place and understand the consequences. Conducting a mercury release analysis provides insight into the measurable public health risk associated with lamp breakage. Observations and insight associated with UV … [Read more...] about UV Lamp Breakage: Investigation and Response
UV/H2O2 Treatment: The Ultimate Solution for the Degradation of Pyrazole
Bram J. Martijn team manager-research and development, PWN Water Supply Company Joop C. Kruithof Ph.D., Wetsus European Center of Excellence for Sustainable Water/Technology On July 9, 2015, Water Supply Company Limburg (WML) noticed the presence of a high concentration of an unknown compound in the water of the river Meuse1. KWR Water Cycle Research Institute showed … [Read more...] about UV/H2O2 Treatment: The Ultimate Solution for the Degradation of Pyrazole
International Standards Organization Seeks IUVA’s UV-C Expertise
IUVA Healthcare/UV Working Group IUVA’s Healthcare/UV Working Group was invited by a representative of the International Organization for Standardization (ISO) Technical Committee 142 to attend its 15th Plenary Meeting at ASHRAE headquarters in Atlanta, Georgia, in late September. Professor Yongheng Huang, convener of the ISO/TC142/WG2 (cleaning equipment for air and other … [Read more...] about International Standards Organization Seeks IUVA’s UV-C Expertise
UV LEDs for Food Applications from Farms to Kitchen
IUVA Food and Beverage Safety Working Group The IUVA Food and Beverage Safety Working Group has announced the availability of the first edition of the monograph, Ultraviolet LED Technology for Food Applications from Farms to Kitchens. This edition, edited by Tatiana Koutchma, Ph.D., is intended to provide UV LED manufacturers; food design, production and safety engineers, … [Read more...] about UV LEDs for Food Applications from Farms to Kitchen
Association News
IUVA Announces New President, President-Elect and Executive Operating Committee Members The International Ultraviolet Association (IUVA) is pleased to welcome Ron Hofmann, professor at the University of Toronto, as its new president, serving a two-year term. Hofmann assumes the position from Oliver Lawal, president of AquiSense, who is now the association’s immediate past … [Read more...] about Association News