By Liz Stevens, writer, UV Solutions Deep Light Photonics, Inc., headquartered in Los Angeles, California, and founded by CEO Michael D. Tiberi, has developed and begun manufacture of a novel, high-power polychromatic, pulsed light source that is mercury-free. The eUV® uses an electron beam in an evacuated glass envelope to excite proprietary phosphors, producing UV-C emission … [Read more...] about Technology Highlight: Deep Light Photonics Introduces High-Efficiency, Hg-Free UV-C Light Source
Technology
To Buy or Not to Buy? Understanding and Choosing UV LEDs
Article provided courtesy of Laser Components USA In 1992, the Japanese Nobel Prize winner Isamu Akasaki developed the first light-emitting diode (LED) for the ultraviolet spectrum. Since then, this comparatively young technology has continuously conquered new areas of application. Especially in the short UV wavelengths between 280 nm and 100 nm, where technical development is … [Read more...] about To Buy or Not to Buy? Understanding and Choosing UV LEDs
Ultraviolet Disinfection: Background and Basics
Kari Sholtes, Ph.D., instructor, CMU/CU Boulder Civil Engineering, Colorado Mesa University Richard Simons, Ph.D., head of application science, AquiSense Technologies Sara E. Beck, Ph.D., assistant professor, University of British Columbia Babak Adeli, Ph.D., director of R&D, Acuva Technologies Inc. Zhe Sun, Ph.D., post-doc, Research Center for Eco- Environmental … [Read more...] about Ultraviolet Disinfection: Background and Basics
The Disinfection Efficacy of 405 nm Light
Jim Bolton, Ph.D., president, Bolton Photosciences, Inc. Gary Naarup, president, PremierOne Products, Inc. Ultraviolet light in the UV-C region (particularly at 254 nm) has been widely applied to achieve the disinfection of drinking water and wastewater. Typical fluences (UV doses) for 4-logs inactivation are protozoa (10 mJ/cm2), bacteria (10 to 15 mJ/cm2) and viruses (20 to … [Read more...] about The Disinfection Efficacy of 405 nm Light
Mobile UV-C Devices: User Education is Key
Katja Auer, MA, MBA Clinical Director-Healthcare Division, American Ultraviolet The mobile UV-C market has exploded with a plethora of UV-C devices, ranging from handheld UV-C disinfection wands, to UV-C chambers and an ever-growing selection of mobile devices. Some manufacturers refer to them as UV-C robots and others simply call them mobile UV-C devices, but they all have … [Read more...] about Mobile UV-C Devices: User Education is Key
Efficiently Powering UV Sources
Tonnie Telgenhof Oude Koehorst, product manager/new business UV, Nedap Ultraviolet low- and medium-pressure lamps and LEDs are well known and widely accepted UV sources for disinfection applications for air, surface, water and other fluids. Improving efficiency of UV lamps has reached physical limits, and UV LEDs still have a long way to go. Unfortunately, the overall … [Read more...] about Efficiently Powering UV Sources
Intelligent Heat Extraction with Thermoelectric Cooler for UV-C LEDs
Pablo Fredes, project manager, Hydraluvx UV Disinfection Technologies; Ulrich Raff, optics and semiconductors lab, Physics Department, University de Santiago de Chile; Ernesto Gramsch, optics and semiconductors lab, Physics Department, University de Santiago de Chile In the solid state lighting industry, many research groups have shifted their focus toward the shorter … [Read more...] about Intelligent Heat Extraction with Thermoelectric Cooler for UV-C LEDs
New UV System Withstands Extreme Flooding Event
Article provided courtesy of TrojanUV The city of Orange in Orange County, Texas, is located about 100 miles east of Houston and approximately 30 miles due north of the Gulf of Mexico. It is the state’s easternmost city and home to the Orange Waste Water Treatment Plant (WWTP). Located along the Sabine River, this municipal wastewater treatment plant with a peak capacity of 24 … [Read more...] about New UV System Withstands Extreme Flooding Event
Essentials of Germicidal Irradiation for Reduction of Microorganisms
Jeffrey E. Stines director of marketing, American Ultraviolet, jstines@aUVCo.com The first documented application of UV for the purpose of disinfection was a 1910 prototype drinking water plant in Marseille, France1. Since that time, effective use of ultraviolet energy for reduction of microorganisms has spread to a wide variety of applications including drinking and … [Read more...] about Essentials of Germicidal Irradiation for Reduction of Microorganisms
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