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2016 Vol.25, Issue 1 Preview Page
Development of Drainage Water Disinfection System by Electric Shock in Recirculating Soilless Culture

순환식 수경재배에서 배액의 전기충격살균법 연구

Mun Haeng Lee1
,
Sung Eun Kim2
,
Sang Don Lee2
,
Jae Eun Lee3
,
Hak Sun Kim3
,
Suk Keong Cho3
,
Sang Youn Sim4
,
Young Shik Kim3*
이 문행1
,
김 성은2
,
이 상돈2
,
이 재은3
,
김 학선3
,
조 숙경3
,
심 상연4
,
김 영식3*
1Chungnam-do Agricultural Research & Extension Service, Gongju Chungnam 323-814. Korea
2Substratus Korea 648-6 Sungdong, Gimjesi Jeonbuk 576-090, Korea
3Department of Plant and Food Sciences, Sangmyung University, 31 Sangmyunddae-gil, Cheonan, Chungnam 330-720, Korea
4GyeongGi-Do Agricultural Research & Extension Services, Hwasung-si 445-300, Korea
1충청남도농업기술원
2써브스트라투스코리아
3상명대학교 식물식품공학과
4경기도농업기술원
*Corresponding author: youngskim77@gmail.com
31 January 2016. pp. 49-56
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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
disinfe

본 연구는 의료살균기술의 하나인 전극을 이용한 전기 충격 살균법을 순환식 수경재배의 배양액 재순환을 위한 배액 살균기술로 활용하고, 배액의 전기살균소독시스템 을 구축하고자 할 때, 살균소독 효과가 높으며, 친환경 적이고 경제적인 배양액 살균소독기술의 개발 및 전기살 균소독시스템에서 사용될 전극의 최적 조건을 구명하고 전기소독의 가능성을 확인하기 위해 수행되었다. 전기살 균소독시스템 구축 시 적정 전극소재 구명을 위해 금속 전도체의 특성 조사 및 전기실험을 실시하여 배액의 pH 와 EC변화유무와 침전물 발생여부 및 배액의 원소변화 유무를 분석하였다. 새로이 개발된 전기살균소독시스템 구축 시 가장 적합한 금속 전도체 전극소재로는 전기전 도도가 높고, 저항이 적으며, 소재의 수급이 용이하고, 가격이 저렴한 스테인리스 스틸임을 확인하였으며. 또한 스테인리스 스틸을 전극으로 사용하였을 때, 전기를 공 급하기 전과 24V 이내의 전기를 공급한 후의 배양액내 원소변화는 거의 없는 것으로 분석되었다. 전극의 두께 보다는 넓이가 증가함에 따라 전류의 양이 증가하였으며 전극의 거리가 멀수록 목표 전류량에 도달하는 시간이 증가하였다. 적합한 전류량에 따른 주요 병원균의 살균 력을 조사한 결과 대표적 세균병인 풋마름병의 원인균인 Ralstonia solanacearum가 전류 15V-3A 170초에서 97% 가 사멸되는 것을 확인하였으며 곰팡이병인 Fusarium oxysporum은 24V-10A에서 98%의 살균력을 보였다.

키워드
살균
순환식 수경재배
전극
전기쇼크
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Information
  • Publisher :The Korean Society for Bio-Environment Control
  • Publisher(Ko) :(사)한국생물환경조절학회
  • Journal Title :Protected Horticulture and Plant Factory
  • Journal Title(Ko) :시설원예ㆍ식물공장
  • Volume : 25
  • No :1
  • Pages :49-56
  • Received Date : 2016-03-08
  • Revised Date : 2016-03-21
  • Accepted Date : 2016-03-23
  • DOI :https://doi.org/10.12791/KSBEC.2016.25.1.49
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