| Title |
Analysis of Microbial Sterilization Based on Ultraviolet LEDs for Smart Farm |
| Authors |
Beom-Su kim ; Hong-Shik Lee ; Yong-Kab Kim |
| DOI |
http://doi.org/10.5207/JIEIE.2020.34.4.011 |
| Keywords |
UV-LED; Sterilization; Microbes; Nutrient Solution |
| Abstract |
Recently, introduction of various systems on smart farm has been brought great attention to high-quality green plant production. In the management system of farm, especially in the case of hydroponics, plant and water pollution damages caused by reproduction of harmful bacteria such as Pythium or Fusarium have become repeated problems of plant growth. Therefore, many studies have been researched on contamination of nutrient solution from smart farm with hydroponics and ultraviolet sterilizing system against harmful bacteria. In this paper, a module of 280mW optical power was manufactured using UV-C LED of 278nm wavelength and sterilization effect on E. Coli, C. Michiganensis, P. Cichorii, and F. Oxysporium was analysed under 84mW, 140mW, and 196mW, which are photovoltaic conditions.
As a result, when the sterilizing system was exposed to UV-C LED light of 196mW optical output for three minutes, the four kind of microbes were sterilized by 91% and all of the colonies were disappeared by 99.99% after five minutes. |