Multi-electrode electrohydraulic discharge for sterilization and disinfection
Multi-electrode electrohydraulic discharge for sterilization and disinfection
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DOI：
10.1109/ppc.2009.5386379
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发表时间：
2009-06
期刊：
影响因子：
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通讯作者：
Y. Huang;H. Yan;S. Li;K. Yan
中科院分区：
文献类型：
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作者：
Y. Huang;H. Yan;S. Li;K. Yan
电液放电（EHD）可以产生局部等离子体，发射高强度紫外线，产生激波和活性物质。它是一种多种作用方式的灭菌和消毒方法。利用自制的全固态开关电容脉冲电源和多电极EHD反应器，对EHD灭活小球藻的机理进行了实验研究。脉冲电源的典型能量范围为5-500J，重复频率为1-10Hz。将单电流脉冲波应用于EHD反应器。我们还设计了一个多电极配置，使小球藻的失活效率提高了90%以上。此外，利用PMT单色仪和高速CCD摄像系统分别检测了紫外发射和脉冲等离子体诱导气泡生长过程。放电后，紫外可见分光光度计测得的叶绿素浓度升高，这是由小球藻细胞破裂引起的。
Electrohydraulic discharge (EHD) can generate localized plasma emitting high intensity ultraviolet, and generating shock wave and active species. It is a multiple mode-of-action approach of sterilization and disinfection. Based on a homemade experimental setup, including all solid-switch capacitive pulsed power source and multi-electrode EHD reactor, we experimentally investigate the mechanism of EHD for chlorella inactivation. Typical energy range of the pulse power source is 5–500J with a repetition rate of 1–10Hz. Mono-current pulse wave is applied on the EHD reactor. We also design a multiple electrode configuration to increase the chlorella inactivation efficiency of over 90%. Besides, a monochromator combined with PMT and a high speed CCD camera system are used to detect the ultraviolet emission and pulsed plasma induced bubble growth process, respectively. After discharging, the concentration of chlorophyll measured by UV-visible spectrophotometer rises, which is caused by the broken up of chlorella cell.