+44 (0)1256 892194
  JenActUV
The Jenton Group Contact Home Products Applications Technology Downloads Events

Odour Control and Treatment with UV Ozone Generators 

UV lamps can be used to generate ozone (O3) if suitable material (pure or synthetic quartz) is used for the lamp tube. Such materials do not block wavelengths below 200nm and for the standard mercury UV lamps, the wavelength responsible for ozone production is 185nm. These ozone generators are, therefore, sometimes called vacuum-ultraviolet (VUV or UVV) ozone generators. The UV lamps are a fairly inefficient ozone source in comparison to corona discharge ozone generators, but the ozone generated by the UV lamps in conjunction with UVC radiation at 254nm, helps to achieve much better results in odour treatment applications. VUV ozone generators, unlike corona discharge generators, do not produce harmful nitrogen by-products and also unlike corona discharge systems, VUV ozone generators work extremely well in humid air environments. There is also not normally a need for expensive off-gas mechanisms and no need for air driers or oxygen concentrators which require extra costs and maintenance. The principle of ozone formation using UV lamps, is illustrated in the first picture on the right. It should be noted, that most of VUV radiation at wavelength of 185nm, is absorbed within several millimetres from the UV lamp. Therefore, only the oxygen in very close vicinity of the UV lamp, can be utilised to create oxygen radicals and generate ozone. It should be also noted that the UVC radiation at 254nm, which is generated by the UV lamps at the same time as 185nm VUV radiation, breaks down molecules of ozone back to oxygen and oxygen radical. Therefore, the UV lamps may not be the best way of producing ozone but they are an ideal engine for producing highly reactive oxygen radicals which help to initiate further chemical reactions (oxidisation) of harmful or smelly VOCs. Potential applications include: Air Odours and Bio-Chemical Contamination           (0.5MB) Garbage Rooms / Noxious Areas         (0.3MB)    Sewage Odours         (0.4MB)  Cold Room Air Sterilisation & Ethylene Reduction          (0.4MB) 
Ozone generation by UV irradiation 185nm Ozone destruction caused by UV irradiation 254nm
Ozone Formation
Ozone Destruction
Applications
odours bio-chemical contamination garbage rooms, noxious areas Cold Room Air Sterilization & Ethylene Reduction sewage odours UV Air Purification Sanuvox
Jenton International UK 9/10 Ardglen Industrial Estate, Evingar Road, Whitchurch, HAMPSHIRE  RG28 7BB  UNITED KINGDOM Tel:+44 (0)1256 892194            Fax:+44 (0)1256 896486               jenact@jenton.co.uk
JenAct Ltd is a part of the Jenton Group of companies specialising in technically innovative products for the Packaging, Banding, UV Curing, UV LED, UV Disinfection, Viscosity Control, Converting industries as well as the food automation packaging industry with Jenton-Ariana 
enton International Home Page J
  JenActUV

Odour Control and Treatment with

UV Ozone Generators 

UV lamps can be used to generate ozone (O3) if suitable material (pure or synthetic quartz) is used for the lamp tube. Such materials do not block wavelengths below 200nm and for the standard mercury UV lamps, the wavelength responsible for ozone production is 185nm. These ozone generators are, therefore, sometimes called vacuum-ultraviolet (VUV or UVV) ozone generators. The UV lamps are a fairly inefficient ozone source in comparison to corona discharge ozone generators, but the ozone generated by the UV lamps in conjunction with UVC radiation at 254nm, helps to achieve much better results in odour treatment applications. VUV ozone generators, unlike corona discharge generators, do not produce harmful nitrogen by-products and also unlike corona discharge systems, VUV ozone generators work extremely well in humid air environments. There is also not normally a need for expensive off- gas mechanisms and no need for air driers or oxygen concentrators which require extra costs and maintenance. The principle of ozone formation using UV lamps, is illustrated in the first picture on the right. It should be noted, that most of VUV radiation at wavelength of 185nm, is absorbed within several millimetres from the UV lamp. Therefore, only the oxygen in very close vicinity of the UV lamp, can be utilised to create oxygen radicals and generate ozone.  
Ozone generation by UV irradiation 185nm Ozone destruction caused by UV irradiation 254nm
Ozone Formation
Ozone Destruction
Applications
odours bio-chemical contamination garbage rooms, noxious areas Cold Room Air Sterilization & Ethylene Reduction sewage odours
It should be also noted that the UVC radiation at 254nm, which is generated by the UV lamps at the same time as 185nm VUV radiation, breaks down molecules of ozone back to oxygen and oxygen radical. Therefore, the UV lamps may not be the best way of producing ozone but they are an ideal engine for producing highly reactive oxygen radicals which help to initiate further chemical reactions (oxidisation) of harmful or smelly VOCs. Potential applications include:
Sewage Odours                 (0.4MB)
Cold Room Air Sterilisation & Ethylene Reduction             (0.4MB)
Garbage Rooms / Noxious Areas                       (0.3MB)
menu The Jenton Group