Continuous Disinfection of Fusarium oxysporum in Nutrient Solution by Pulsed Electric Field.pdf (736.71 kB)

Continuous disinfection of Fusarium oxysporum in nutrient solution by pulsed electric field

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conference contribution
posted on 01.02.2021, 15:12 by R Chen, Di Zhang, Ninghui Zhu, Chengcheng Liu, Bucur Novac, Chongshan Zhong
The disinfection of recirculating nutrient solution is essential to avoid disasters due to the dispersal of pathogens in a closed soilless culture system. In this work, a disinfection technique using pulsed electric field (PEF) has been investigated. A system was designed to implement continuous disinfection treatment of nutrient solution. The system mainly includes two parts: 1) a pulsed power generator that produces repetitive pulses with amplitude of between 0 kV and 5 kV with a pulse duration of 10 μs and a pulse repetition frequency of 50 Hz and 2) a parallel-plate treatment chamber used to realize continuous processing. In order to verify the efficacy of PEF treatment Fusarium oxysporum, being amongst the most destructive root-borne diseases, was selected as the object of study and therefore the nutrient solution was inoculated with this pathogen. The results indicate that PEF treatment deactivated most of the Fusarium oxysporum in the nutrient solution, achieving a maximum disinfection efficiency of 99%. At the same time, no obvious changes of the inorganic compositions in the PEF-treated nutrient solution were observed. The overall system is simple and convenient to be operated, worked stably and was capable of achieving a continuous treatment. This work therefore clearly demonstrates the feasibility of continuous PEF disinfection treatment in real soilless culture systems, opening the door for implementation in various agricultural applications.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

2020 IEEE International Conference on High Voltage Engineering and Application (ICHVE)

Source

2020 IEEE International Conference on High Voltage Engineering and Application (ICHVE)

Publisher

IEEE

Version

AM (Accepted Manuscript)

Rights holder

© IEEE

Publisher statement

© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Publication date

2020-12-15

Copyright date

2020

ISBN

9781728155111

eISSN

2474-3852

Language

en

Location

Beijing, China

Event dates

6th September 2020 - 10th September 2020

Depositor

Prof Bucur Novac. Deposit date: 30 January 2021

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