The quality of water for human consumption has been a concern large organizations and researchers, since the disinfection process, step great importance in treatment plants, not achieved its proper purpose. There have frequent reports ineffectiveness bacteria inactivation by use chlorine, which is most used Brazil, also due to formation by-products such as trihalomethanes haloacetic acids that ...

Liquid foods might present interferences in their optical properties that can reduce the effectiveness of short-wave ultraviolet radiation (UV-C) treatments used for sterilization purposes. The effect turbidity as UV-C interference factor against inactivation bacterial spores was analysed by using phosphate-buffered saline solutions (PBS) different values (2000, 2500, and 3000 NTU) which were a...

The kinetics of Escherichia coli inactivation using ozone and ultraviolet (UV) radiation, separately and simultaneously, was evaluated at 25 degrees C in buffered (pH 6.0, 7.0 and 8.0), demand-free media. While ozone was found to be a stronger disinfectant than UV radiation, using both simultaneously was more effective than using them individually. Inactivation kinetics was pseudo first-order f...

There is growing interest in using continuous, low-irradiance germicidal ultraviolet (UV) radiation to prevent bacterial attachment and growth on surfaces. However, inactivation kinetics at those low (μW cm −2 ) irradiance values are well understood.

Rotaviruses are double-stranded RNA viruses which are among the most resistant waterborne enteric viruses to UV disinfection. An integrated cell culture and real-time RT-PCR (ICC real-time RT-PCR) assay was developed to detect the infectivity of rotaviruses in water, which uses real-time RT-PCR to detect RNA produced by infectious rotaviruses during replication in host cells. Detection of rotav...

Understanding the disinfection capabilities of UV light to inactivate disease-causing microorganisms is important in protecting Soldiers, who are considering using this technology, from acute health threats posed by these microorganisms. Soldiers deployed beyond traditional field drinking water supplies must have access to microbiologically safe water. Using IWPDs is one way to provide microbio...

UV light inactivation of Mycobacterium avium subsp. paratuberculosis in Middlebrook 7H9 broth and whole and semiskim milk was investigated using a laboratory-scale UV machine that incorporated static mixers within UV-penetrable pipes. UV treatment proved to be less effective in killing M. avium subsp. paratuberculosis suspended in milk (0.5- to 1.0-log(10) reduction per 1,000 mJ/ml) than that s...

Understanding the disinfection capabilities of UV light to inactivate disease-causing microorganisms is important in protecting Soldiers, who are considering using this technology, from acute health threats posed by these microorganisms. Soldiers deployed beyond traditional field drinking water supplies must have access to microbiologically safe water. Using IWPDs is one way to provide microbio...

Understanding the disinfection capabilities of UV light to inactivate disease-causing microorganisms is important in protecting Soldiers, who are considering using this technology, from acute health threats posed by these microorganisms. Soldiers deployed beyond traditional field drinking water supplies must have access to microbiologically safe water. Using IWPDs is one way to provide microbio...

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