Development of automatically controlled corona plasma system for inactivation of pathogen in hydroponic cultivation medium of tomato

Katsuyuki Takahashi, Yoshinori Saito, Rikuya Oikawa, Takamasa Okumura, Koichi Takaki, Takuya Fujio

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

A nutrient solution treatment system using corona plasma is developed for practical use in hydroponics. A gas-liquid separated reactor and a high voltage power supply based on a 20 kHz inverter neon-transformer are developed to archive the treatment with high energy efficiency, a low initial cost and a low running cost. The performance of the system on bacteria inactivation in the nutrient solution is evaluated in a continuous treatment system operation. The results show that the standard plate count for background microflora and R. solanacearum is drastically reduced by the plasma treatment and is not detected after 8 days treatment. The nutrient solution is decontaminated by 4 log cycle with plasma treatment under the continuous operation condition.

Original languageEnglish
Pages (from-to)61-69
Number of pages9
JournalJournal of Electrostatics
Volume91
DOIs
Publication statusPublished - Feb 2018
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biotechnology
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering

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