Kinetics and mechanism of Paraquat’s degradation: UV-C photolysis vs UV-C photocatalysis with TiO2/SiC foams

Photocatalytic degradation of amoxicillin, ampicillin and cloxacillin antibiotics in aqueous solution using UV/TiO2 and UV/H2O2/TiO2 photocatalysis

Impact of Room Location on UV-C Irradiance and UV-C Dosage and Antimicrobial Effect Delivered by a Mobile UV-C Light Device

OBJECTIVE To evaluate ultraviolet C (UV-C) irradiance, UV-C dosage, and antimicrobial effect achieved by a mobile continuous UV-C device. DESIGN Prospective observational study. METHODS We used 6 UV light sensors to determine UV-C irradiance (W/cm2) and UV-C dosage (µWsec/cm2) at various distances from and orientations relative to the UV-C device during 5-minute and 15-minute cycles in an ICU r...

UV-C inactivation of Legionella rubrilucens

Background: Despite the great health significance of Legionella, there is only little information on their UV sensitivity. Besides Legionella pneumophila only L. longbeachae has been investigated so far. Methods: In this study L. rubrilucens has been spread on buffered charcoal yeast extract agar and irradiated with the 254 nm UV-C emission of a mercury vapor lamp. The disinfection success is m...

THE IMPACTS OF UV DIRECT PHOTOLYSIS AND (UV/H2O2, UV/NaOCl) ADVANCED OXIDATION PROCESSES ON THE DEGRADATION OF MONOCHLORAMINE USING LOW PRESSURE (LP) LAMP

The aim of this study was to investigate the use of photochimicals processes (photolysis, H2O2/UVLP and NaOCl/UVLP) to eliminate monochloramine compound using a Low Pressure Hg lamp as an irradiation source (254 nm). First, it was found that the direct photolysis treatment might be rate of depletion under UV dose at 8000 mj/m2). Besides, this degradation was greatly improved by H2O2/UVLP thank’...

Daytime tropospheric loss of hexanal and trans-2-hexenal: OH kinetics and UV photolysis

The ultraviolet (λ=250–370 nm) photolysis and the OH-initiated oxidation of hexanal and trans-2-hexenal, which are relevant atmospheric processes, have been investigated at room temperature and as a function of temperature (T=263–353 K), respectively. This kinetic study as a function of temperature is reported here for the first time. 5 Absolute absorption cross sections (σ λ) were obtained usi...