Pulsed electric field treatment of microalgae : inactivation tendencies and energy consumption

Qin, Si and Timoshkin, Igor and MacLean, Michelle and Wilson, Mark and MacGregor, Scott and Given, Martin and Anderson, John and Wang, Tao (2014) Pulsed electric field treatment of microalgae : inactivation tendencies and energy consumption. IEEE Transactions on Plasma Science, 42 (10). pp. 3191-3196. ISSN 1939-9375 (https://doi.org/10.1109/TPS.2014.2317522)

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Abstract

Pulsed electric field (PEF) treatment can be used to facilitate microbial cell lysis. The aim of this paper is to investigate this effect of PEF treatment on microalgae. The PEF system used in this paper consists of a pulse generator and treatment cell with parallel-plane metallic electrodes. The PEF treatment of microalgae, Spirulina, was conducted using 33.3- and 66.7-kV/cm electric field impulses. The efficiency of the PEF treatment for inactivation of microalgae was assessed by comparison of the growth curves of PEF-treated and untreated samples. Results showed that growth of microalgae can be stopped by the application between 100 and 500 high-field impulses with field magnitude 33.3 kV/cm. When the field is increased to a magnitude of 66.7 kV/cm, the growth of microalgae can be stopped by application of 50 impulses. Overall, this paper confirms that PEF treatments can be used for the inactivation of algae and the energy consumption of the PEF process can be reduced using suspensions with lower electrical conductivity.

ORCID iDs

Qin, Si ORCID: https://orcid.org/0000-0001-8616-6121

Timoshkin, Igor ORCID: https://orcid.org/0000-0002-0380-9003

MacLean, Michelle ORCID: https://orcid.org/0000-0001-5750-0397

Wilson, Mark ORCID: https://orcid.org/0000-0003-3088-8541

MacGregor, Scott ORCID: https://orcid.org/0000-0002-0808-585X

Given, Martin ORCID: https://orcid.org/0000-0002-6354-2486

Anderson, John ORCID: https://orcid.org/0000-0003-4151-1619

Wang, Tao ORCID: https://orcid.org/0000-0003-3054-0772

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  Item type:	Article
  ID code:	49353
  Dates:	Date Event 2014 Published 7 May 2014 Published Online 10 April 2014 Accepted
  Notes:	(c) 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, 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 components of this work in other works.
  Subjects:	Science > Physics > Plasma physics. Ionized gases Technology > Electrical engineering. Electronics Nuclear engineering
  Department:	Faculty of Engineering > Electronic and Electrical Engineering
  Depositing user:	Pure Administrator
  Date deposited:	24 Sep 2014 14:53
  Last modified:	11 Nov 2024 10:47
  Related URLs:	Journal or Publication
  URI:	https://strathprints.strath.ac.uk/id/eprint/49353