Study on ozone treatment of soil for agricultural application of surface dielectric barrier discharge

Abstract

Recently, application of plasma technologies to the agricultural field has attracted much interest because residual pesticides and excessive nitrogen oxides contained in plants, soil, and groundwater have become a serious issue worldwide. Since almost all of the atmospheric discharge plasma generates ozone, the effects of ozone are among the key factors for their agricultural applications. We have proposed the use of ozone generated using surface barrier discharge plasma for soil disinfection or sterilization. In this work, the ozone consumption coefficient and diffusion coefficient in soil were measured by the ultraviolet absorption method. The pH(H2O) and amount of nitrogen nutrient in soil after ozone diffusion treatment were studied and plant growth was observed simultaneously. The effect of ozone treatment on the amount of DNA in soil was also investigated and compared with that determined from the obtained ozone consumption coefficient.

Combined ozonation and solarization for the removal of pesticides from soil: Effects on soil microbial communities

“…Mitsugi et al (2014) observed a marked reduction in soil pH after ozonation in a rotating quartz chamber, in agreement with our results. Several studies have demonstrated that H + , salts, and other compounds attached to soil organic matter can be released into the soil solution as a result of the oxidation of the organic matter (Ghahrchi and Rezaee, 2020;Nagatomo et al, 2015). Thus, this phenomenon may explain the observed increase in EC and water-soluble C and N upon ozonation in our study.…”

“…Ozone can contribute to the oxidation of organic compounds (i.e. pesticides) and thus facilitating further biodegradation (Nagatomo et al, 2015). Solarization increases temperature and humidity of soil (Scopa et al, 2008), thus enhancing microbial activity and the potential biodegradation of pesticides by microbial-mediated processes (Kanaan et al, 2018).…”

Plasma-assisted agriculture: history, presence, and prospects—a review

“…The use of traditional chemical treatments results in groundwater pollution with consequent damage to ecosystems. Nagatomo et al [163] proposed the use of ozone generated by surface DBD for soil treatment. Their results revealed that ozone diffused well into the soil.…”

Effect of Plasma Activated Water Foliar Application on Selected Growth Parameters of Maize (Zea mays L.)

“…Using plasma, nitrogen from air can be captured, held and incorporated into water. This process leads to the formation of nitrogen Water 2020, 12, 3545 2 of 15 compounds capable to sustain plants [8,18,19] and reactive compounds of oxygen utilized for the stress decrease of pathogens in the soil [20]. Plasma can be also applied for disinfection of food packaging [21].…”