15/07/2021 - S & T

KEY POINTS

·        The UV-C air duct disinfection system was developed by CSIR-CSIO (Central Scientific Instruments Organisation).

·        The system is designed to fit into any existing air-ducts and the virucidal dosages using UV-C intensity and residence time can be optimised according to the existing space.

Work on corona virus

·        Ultraviolet-C or UV-C Disinfection Technology will soon be installed in Parliament for the “mitigation of airborne transmission of SARS-COV-2.

·        The virus is deactivated in any aerosol particles by the calibrated levels of UV-C light.

·        Ultraviolet (UV) is a type of light or radiation naturally emitted by the Sun. It covers a wavelength range of 100-400 nm.

·        UV-C radiation (wavelength around 254 nm) has been used for decades to disinfect the air in hospitals, laboratories.

·        Scientific Reports noted that UV-C radiation can destroy the outer protein coating of the SARS-Corona virus.

·        They showed that 222-nm, known as ‘far-UVC light’, efficiently kills airborne human coronaviruses.

·        There is very limited data on the required wavelength and duration needed to inactivate SARS-CoV-2.

Applications

·        UV-C radiation (222-254 nm), the device was specifically developed to disinfect non-living things.

·        Used to treat water and disinfecting from microbes.

·        Production of effective lamps and luminaries.

·        It can be used in auditoriums, malls, educational Institutions, AC buses, and in railways.

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