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Chlorophytum rhizosphere, a suitable environment for electroactive biofilm development

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Academic year: 2021

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Chlorophytum rhizosphere, a suitable environment for electroactive

biofilm development

Authors

I Tou, Y Azri, M Sadi, D Zitouni, AS Merad, A Laichouchi, N Drouiche, H Lounici, S Gana-Kebbouche

Publication date

2020/2/18

Journal

Biomass Conversion and Biorefinery

Pages

1-13

Publisher

Springer Berlin Heidelberg

Description

The electroactivity of Chlorophytum rhizospheric soil using imposed potential chronoamperometry and a characteristic cyclic voltammetry was demonstrated in the present work. Five different polarizations were tested: − 0.3, − 0.155, 0, + 0.155, and + 0.3 V/SCE. The current density had stabilized around − 0.0068 mA/m2 and − 0.03 mA/m2 at − 0.155 and − 0.3 V/SCE, respectively. However, at 0, + 0.155,

and + 0.3 V/SCE, a current density had reached respectively 1.46 A/m2, 1.48 A/m2, and 0.6 A/m2. The

potential + 0.155 V/SCE seemed to better stimulate the electrogenic bacteria activity of

the Chlorophytum rhizosphere. Different bacterial strains had formed electroactive biofilms in response to different electrode polarizations. The Chlorophytum rhizosphere electroactivity has depended on strict anaerobes as well as facultative anaerobic bacteria under anaerobic conditions. Furthermore, the

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