Electrical Impedance Spectroscopy for On-Line Estimation of Viable Biomass

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Electrical Impedance Spectroscopy for On-Line Estimation of Viable Biomass

Lasseur, Christophe / Blasco, Daniel / Vayreda, Francesc / Elvira, Jordi / Bujan, Josep / Urpí, Pilar / Bragós, Ramon

Electrical Impedance Spectroscopy (EIS) consists on the measurement of electrical impedance at different frequencies. The electrical impedance of a biological sample has a specific behaviour with respect to the frequency of the electrical current injected. This behaviour can be distinguished from that of a sample without cells or with dead cells. NTE started the development of this technology in the frame of a project of the European Space Agency (1) and in collaboration with the UPC.This technology has started a technology transfer process, in which three companies from three different fields: a brewery (Freixenet, S.A.), a water treatment plant engineering company (Indeco, S.A.) and a pharmaceutical company (Biokit, S.A.) have evaluated the technology for their production requirements.Specifications were issued for each process considered in case: NTE designed a system for each case with specific electrodes, electronics and software. These systems were tested at each company in each industrial process. Requirements on Biomass determination in threshold, resolution, repeatability and accuracy were set. The tests have shown compliance of the systems with the requirements.The following results were obtained for each application:

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Document information

Title :

Electrical Impedance Spectroscopy for On-Line Estimation of Viable Biomass

Additional title:

Sae Technical Papers

Contributors:

Lasseur, Christophe (author) / Blasco, Daniel (author) / Vayreda, Francesc (author) / Elvira, Jordi (author) / Bujan, Josep (author) / Urpí, Pilar (author) / Bragós, Ramon (author)

Conference:

31st International Conference On Environmental Systems ; 2001

Published in:

Sae Technical Paper Series

Publication date :

2001-07-09

ISSN :

2688-3627 , 0148-7191

DOI :

https://doi.org/10.4271/2001-01-2196

Type of media :

Conference paper