Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/17436
ชื่อเรื่อง: Enhancement of Lettuce Growth by PAW Spray Gliding Arc Plasma Generator
ผู้แต่ง: Matra K.
Tanakaran Y.
Luang-In V.
Theepharaksapan S.
Keywords: Electric arcs
Electric power systems
Plasma applications
Plasma devices
Plasma jets
Electrical conductivity
Gliding arc plasmas
High voltage power supply
Lettuce sprouts
Plasma treatment
Plasma-activated waters
Spray conditions
Total Kjeldahl nitrogens
Water treatment
วันที่เผยแพร่: 2021
บทคัดย่อ: The effect of non-thermal air plasma on green oak lettuce farming has been proposed. A gliding arc plasma generator (GAPG) was designed for plasma-activated water (PAW) spray generation. A PAW spray was generated at 8, 10, and 12 kV by a custom-made ac high voltage power supply. Four hydroponic green oak lettuce trays were treated by PAW spray at different conditions for 10 min, three times a day for nine days. The experimental results showed that all the plasma-treated green oak lettuce sprouts had a greater growth rate than the control group. The best condition was found in the PAW spray generated at 8 kV source voltage, which led to the longest average height and width of sprouts of 10.88 ± 0.33 cm and 10.09 ± 0.08 cm, respectively. Moreover, its average dried weight was also significantly greater than that of the control group by 1.69 times. It was found that the concentration of total Kjeldahl nitrogen (TKN), mainly ammonium, was enhanced in every PAW spray condition. However, the highest TKN concentration was found in the 8 kV PAW spray, which was 3.67 times higher than that of the control group. The amount of nitrite (NO₂⁻) and nitrate (NO₃⁻) in PAW spray was also enhanced but in the opposite trend to TKN concentration. Moreover, the electrical conductivity (EC) and pH levels could be improved by air plasma. It could be confirmed that the plasma treatment could be effectively applied to green oak lettuce farming, and the PAW spray generated by the GAPG could enhance the amount of nitrogenous fertilizer in treated water, which is essential for plant growth stimulation. IEEE
URI: https://ir.swu.ac.th/jspui/handle/123456789/17436
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85113878130&doi=10.1109%2fTPS.2021.3105733&partnerID=40&md5=bcf6094547a4ae966e65b35c82cdb5b9
ISSN: 933813
Appears in Collections:Scopus 1983-2021

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