Browse > Article
http://dx.doi.org/10.5668/JEHS.2012.38.2.159

A Study on the Microorganism Disinfection and Characteristics of Discharged Water of Dielectric Barrier Discharge Plasma Systems  

Kim, Dong-Seog (Department of Environmental Science, Catholic University of Daegu)
Park, Young-Seek (Faculty of Liberal Education, Daegu University)
Publication Information
Journal of Environmental Health Sciences / v.38, no.2, 2012 , pp. 159-165 More about this Journal
Abstract
Objectives: This experiment was carried out to elucidate the effect of discharged water on the disinfection of $Phytophthora$ $capsici$ and evaluate the water characteristics. Methods: The dielectric barrier discharges (DBD) plasma reactor system used in this study consisted of a plasma component [discharge, ground electrode and quartz dielectric tube], high voltage source, and air supply. The effects of water characteristics such as pH, ORP and conductivity and the disinfection effect of discharged water were investigated. Results: Experimental results showed that in the process of discharge, the pH decreased, whereas ORP and electric conductivity increased. When the discharge time was 30 min, $Phytophthora$ $capsici$ of 2.94 log was disinfected within 300 seconds. Disinfection performance of stored discharged water was maintained for three days; however the disinfection effect vanished after five days. When $Phytophthora$ $capsici$ was injected into the discharged water, the disinfection effect decreased after two days. Conclusions: It is considered that the main disinfection parameters of the discharged water were chemically active species such as $H_2O_2$ and $O_3$ and high ORP.
Keywords
plasma; disinfection; $Phytophthora$ $capsici$; discharged water;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Statistics Korea. Survey Result of Red pepper and Sesame in 2009. Available: http://kostat.go.kr/portal/ korea/kor_nw/3/index.board?aSeq=177460&bmode= readr[accessed 10 October 2011].
2 Lee JH, Kwon TR, Moon, JD, Lee JT. Effect of acidic electrolyte water on growth and infection of Phytophtophthora capsici. Korean J Plant Pathol. 1998; 14(5): 440-444.
3 Jung HK, Kim SD, Selection and antagonistic of Pseudomonas fluorescens 4059 against Phtophthora blight disease. Korean J Microbiol Biotechnol, 2004; 32(4): 312-316.
4 Nimitkeatkai N, Kim JG. Washing efficiency of acidic electrolyzed water on microbial reduction and quality of 'Fuji' apples. Korean J Horticul Sci Technol. 2009; 27(2): 250-255.
5 Jung, SW, Park KJ, Park KJ, Kim YH. Surface sterilization effect of electrolyzed acid-water on vegetable. Korean J Food Sci Technol. 1996; 28(6): 1045-1051.
6 Kim DS, Park, YS. Effect of operating parameters on electrochemical degradation of Rhodamine B by three-dimensional electrode. J Environ. Heath Sci 2009; 35(4): 295-303.
7 Kim DS, Park, YS. Removal of Rhodamine B Dye Using a Water Plasma Process. J Environ Heath Sci. 2011; 37(3): 218-225.   과학기술학회마을   DOI   ScienceOn
8 Shi J, Bian W, Yin X. Organic contaminants removal by the technique of pulsed high-voltage discharge in water. J Hazardous Mater. 2009; 171: 924-931.   DOI   ScienceOn
9 Li M, Feng C, Hu W, Zhang Z, Sugiura N, Electrochemical degradation of phenol using electrodes of $Ti/RuO_{2}-Pt and Ti/IrO_{2}-Pt$. J Hazardous Mater. 2009; 162: 455-462.   DOI   ScienceOn
10 Ryu SM, Park HK, Lee BJ. Study on the characteristics of dielectric barrier discharging system and usability as a disinfectant. Journal of the Korean Society of Water and Wastewater 2004; 18(4): 529- 536.
11 Park YS, Kim DS. Effects of operating parameters on electrochemical degradation of Rhodamine B and formation of OH radical using BDD electrode. J Environ Sci. 2010; 19(9): 1143-1152.   과학기술학회마을   DOI   ScienceOn
12 Jun YK. Characteristics change of water using wetplasma. Masan: Kyeungnam University; 2004.
13 Sillier JH, Elliott EP, Baired-Parker AC, Bryan FL, Christian JHB, Clark DS, Olson JC, Jr. Roberts TA. Microbial Ecology of Foods. 1st ed. London: Academic press; 1980. p.112.