국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Pilot Study for UVA-LED Disinfection of Escherichia coli in Water for Space and Earth Applications
저자	Ragolta, Carolina
Keyword	ANTISEPTICS;; ESCHERICHIA;; FLOW VELOCITY;; IRRADIATION;; LIGHT EMITTING DIODES;; POTABLE WATER;; PURIFICATION;; TEST CHAMBERS;; ULTRAVIOLET RADIATION;; WATER TREATMENT
URL	http://hdl.handle.net/2060/20100031695
보고서번호	KSC-2010-172
발행년도	2010
출처	NTRS (NASA Technical Report Server)
ABSTRACT	To test the efficacy of UVA-LED disinfection, a solution of Escherichia coli was pumped through a modified drip flow reactor at a flow rate of 1 ml/min. The experiment was conducted in a controlled environment chamber to ensure that temperature did not cause disinfection. The reactor featured three wells with different treatments: UVA-LED irradiation, UVA-LEDs with Ti02, and UVA-LEDs with nanosilver. Samples from each well were taken throughout a 340 hour period, inactivated, assayed, and analyzed for E. coli disinfection. Results of the duplicate experiments indicated longer exposure times are needed for UVA-LED disinfection of E. coli in water. Further research would consider a longer sampling period and different test conditions, such as increased contact area and various flow rates.