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http://dx.doi.org/10.12791/KSBEC.2016.25.1.49

Development of Drainage Water Disinfection System by Electric Shock in Recirculating Soilless Culture  

Lee, Mun Haeng (Chungnam-do Agricultural Research & Extension Service)
Kim, Sung Eun (Substratus)
Lee, Sang Don (Substratus)
Lee, Jae Eun (Department of Plant and Food Sciences, Sangmyung University)
Kim, Hak Sun (Department of Plant and Food Sciences, Sangmyung University)
Cho, Suk Keong (Department of Plant and Food Sciences, Sangmyung University)
Sim, Sang Youn (GyeongGi-Do Agricultural Research & Extension Services)
Kim, Young Shik (Department of Plant and Food Sciences, Sangmyung University)
Publication Information
Journal of Bio-Environment Control / v.25, no.1, 2016 , pp. 49-56 More about this Journal
Abstract
This study was conducted to develop the disinfection system using electric shock for recycled nutrient solution in recycling soilless culture. Stainless steel (SUS 316) was found as the most appropriate electrode material for electrical disinfection system from the view of high electrical conductivity, low electric resistance, and low price. There were no changes in nutritional elements when the electric shock passed through the nutrient solution by stainless steel electrode. The amount of electric current increased with width than thickness of the electrode. The farther the distance between the electrodes was increased the time to reach out the aimed amount of current. The electric shock was applied to Ralstonia solanacearum and Fusarium oxysporum as representative bacteria and also fungi. Any of those pathogens were killed with the percentage of higher than 97% in the condition of 15VDC or 24VDC.
Keywords
electrode; electric shock; recycling hydroponic culture; disinfection;
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