Title :
Fundamental Study on Ozone Treatment of Soil for Agricultural Application
Author :
Nagatomo, Takuya ; Takigawa, Keisuke ; Sakai, Tadashi ; Mitsugi, Fumiaki ; Ikegami, Tomoaki ; Ebihara, Kenji
Author_Institution :
Grad. Sch. of Sci. & Technol., Kumamoto Univ., Kumamoto, Japan
fDate :
Aug. 31 2013-Sept. 4 2013
Abstract :
In this study, influence of ozone treatment on physical properties of soil was investigated. We used a quartz container for ozone treatment of soil. The amount of soil used for ozone treatment was 300 g. Treating time was 30 min. Flow rate of ozone gas was 1.5 L/min. We measured characteristics of soil such as pH(H2O) and inorganic nutrient content (NO3-N, NO2-N and NH4-N) before and after ozone treatment. Exhaust ozone concentration from the quartz container was monitored with an ozone monitor. The temperature of soil was measured with a thermo-couple during treatment. Ozone amount reacted with soil was about 0.99 g when soil was stirred. Ozone amount was about 0.82 g when soil was not stirred. Contents of NO3-N and NH4-N increased by one order after treatment and subsequently kept a constant quantity. The pH(H2O) decreased drastically to strong acidic region (pH(H2O)=5.0) just after ozone treatment, which is too acidic for growth of crops. However, the pH(H2O) value recovered gradually with time.
Keywords :
agricultural engineering; ozonation (materials processing); ozone; pH; soil; sterilisation (microbiological); H2O; NH4-N; NO2-N; NO3-N; O3; agricultural application; exhaust ozone concentration; ozone monitor; quartz container; soil ozone treatment; soil sterilization; thermo-couple; time 30 min; Agriculture; Containers; Gases; Oxidation; Soil; Soil measurements; Temperature measurement; ammonium; nitrate; ozone sterilization; pH(H2O); soil treatment;
Conference_Titel :
Advanced Applied Informatics (IIAIAAI), 2013 IIAI International Conference on
Conference_Location :
Los Alamitos, CA
Print_ISBN :
978-1-4799-2134-8
DOI :
10.1109/IIAI-AAI.2013.64
