自2000年代初以来,取代传统能源密集型汞UV灯的微型紫外线(UV)发光二极管(LED)因其有前途的优势而引起了人们的兴趣。在水性微生物的微生物灭活(MI)的背景下,这些LED的消毒动力学在研究中表现出差异,在改变紫外线波长方面,曝光时间,电源,和剂量(紫外线注量)以及其他操作条件。虽然报告的结果在单独检查时可能会出现矛盾,当集体分析时,它们可能不是。因此,在这项研究中,我们对报告的数据进行了定量的集体回归分析,以通过新兴的UVLED技术以及变化的操作条件的影响来阐明MI的动力学。主要目标是确定UVLED的剂量响应要求,并将其与传统UV灯进行比较,同时确定最佳设置,以帮助实现可比UV剂量的最佳灭活结果。分析表明,在动力学上,UVLED与常规汞灯一样有效用于水消毒,有时更有效,特别是抗紫外线微生物。我们定义了两个波长的最大效率,260-265nm和280nm,在广泛的可用的LED波长。我们还定义了测试微生物的每对数失活的UV通量。在业务层面,我们确定了现有的差距,并为未来的需求制定了一个全面的分析程序框架。
Tiny ultraviolet (UV) light-emitting diodes (LED)s that are replacing the conventional energy-intensive mercury UV lamps have gained interest since the early 2000\'s because of their promising advantages. In the context of microbial inactivation (MI) of waterborne microbes, disinfection kinetics of those LEDs exhibited variations among studies, in terms of varying the UV wavelength, the exposure time, power, and dose (UV fluence) as well as other operational conditions. While reported results may appear contradictory when examined separately, they probably are not when analyzed collectively. As such, in this study, we carry out a quantitative collective regression analysis of the reported data to shed light on the kinetics of MI by the emerging UV LEDs technology alongside the effects of varying operational conditions. The main goal is to identify dose response requirements for UV LEDs and to compare them to traditional UV lamps in addition to ascertaining optimal settings that could help in achieving the optimal inactivation outcome for comparable UV doses. The analysis showed that kinetically, UV LEDs are as effective as conventional mercury lamps for water disinfection, and at times more effective, especially for UV resistant microbes. We defined the maximal efficiency at two wavelengths, 260-265 nm and 280 nm, among a wide range of available LED wavelengths. We also defined the UV fluence per log inactivation of tested microbes. At the operational level, we identified existing gaps and developed a framework for a comprehensive analysis program for future needs.