Continuous electron shuttling by sulfide oxidizing bacteria as a novel strategy to produce electric current
Sulfide oxidizing bacteria (SOB) are widely applied in industry to convert toxic H2S into elemental sulfur. Haloalkaliphilic planktonic SOB can remove sulfide from solution under anaerobic conditions (SOB are ‘charged’), and release electrons at an electrode (discharge of SOB). The effect of this electron shuttling on product formation and biomass growth is not known. Here, we study and demonstrate a continuous process in which SOB remove sulfide from solution in an anaerobic ‘uptake chamber’, and shuttle these electrons to the anode of an electrochemical cell, in the absence of dissolved sulfide. Two experiments over 31 and 41 days were performed. At a sulfide loading rate of 1.1 mmolS/day, electricity was produced continuously (3 A/m2) without dissolved sulfide in the anolyte. The main end product was sulfate (56% in experiment 1% and 78% in experiment 2), and 87% and 77% of the electrons in sulfide were recovered as electricity. It was found that the current density was dependent on the sulfide loading rate and not on the anode potential. Biological growth occurred, mainly at the anode as biofilm, in which the deltaproteobacterial genus Desulfurivibrio was dominating. Our results demonstrate a novel strategy to produce electricity from sulfide in an electrochemical system.
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Format: | Article/Letter to editor biblioteca |
Language: | English |
Subjects: | Bio-anode, Bioelectrochemistry, Microbial electrochemical system, Sulfide oxidizing bacteria (SOB), Sulfide removal, |
Online Access: | https://research.wur.nl/en/publications/continuous-electron-shuttling-by-sulfide-oxidizing-bacteria-as-a- |
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dig-wur-nl-wurpubs-5895432024-10-02 de Rink, Rieks B. Lavender, Micaela Liu, Dandan Klok, Johannes B.M. Sorokin, Dimitry Y. ter Heijne, Annemiek Buisman, Cees J.N. Article/Letter to editor Journal of Hazardous Materials 424 (2022) ISSN: 0304-3894 Continuous electron shuttling by sulfide oxidizing bacteria as a novel strategy to produce electric current 2022 Sulfide oxidizing bacteria (SOB) are widely applied in industry to convert toxic H2S into elemental sulfur. Haloalkaliphilic planktonic SOB can remove sulfide from solution under anaerobic conditions (SOB are ‘charged’), and release electrons at an electrode (discharge of SOB). The effect of this electron shuttling on product formation and biomass growth is not known. Here, we study and demonstrate a continuous process in which SOB remove sulfide from solution in an anaerobic ‘uptake chamber’, and shuttle these electrons to the anode of an electrochemical cell, in the absence of dissolved sulfide. Two experiments over 31 and 41 days were performed. At a sulfide loading rate of 1.1 mmolS/day, electricity was produced continuously (3 A/m2) without dissolved sulfide in the anolyte. The main end product was sulfate (56% in experiment 1% and 78% in experiment 2), and 87% and 77% of the electrons in sulfide were recovered as electricity. It was found that the current density was dependent on the sulfide loading rate and not on the anode potential. Biological growth occurred, mainly at the anode as biofilm, in which the deltaproteobacterial genus Desulfurivibrio was dominating. Our results demonstrate a novel strategy to produce electricity from sulfide in an electrochemical system. en application/pdf https://research.wur.nl/en/publications/continuous-electron-shuttling-by-sulfide-oxidizing-bacteria-as-a- 10.1016/j.jhazmat.2021.127358 https://edepot.wur.nl/557480 Bio-anode Bioelectrochemistry Microbial electrochemical system Sulfide oxidizing bacteria (SOB) Sulfide removal https://creativecommons.org/licenses/by/4.0/ https://creativecommons.org/licenses/by/4.0/ Wageningen University & Research |
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Bio-anode Bioelectrochemistry Microbial electrochemical system Sulfide oxidizing bacteria (SOB) Sulfide removal Bio-anode Bioelectrochemistry Microbial electrochemical system Sulfide oxidizing bacteria (SOB) Sulfide removal |
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Bio-anode Bioelectrochemistry Microbial electrochemical system Sulfide oxidizing bacteria (SOB) Sulfide removal Bio-anode Bioelectrochemistry Microbial electrochemical system Sulfide oxidizing bacteria (SOB) Sulfide removal de Rink, Rieks B. Lavender, Micaela Liu, Dandan Klok, Johannes B.M. Sorokin, Dimitry Y. ter Heijne, Annemiek Buisman, Cees J.N. Continuous electron shuttling by sulfide oxidizing bacteria as a novel strategy to produce electric current |
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Sulfide oxidizing bacteria (SOB) are widely applied in industry to convert toxic H2S into elemental sulfur. Haloalkaliphilic planktonic SOB can remove sulfide from solution under anaerobic conditions (SOB are ‘charged’), and release electrons at an electrode (discharge of SOB). The effect of this electron shuttling on product formation and biomass growth is not known. Here, we study and demonstrate a continuous process in which SOB remove sulfide from solution in an anaerobic ‘uptake chamber’, and shuttle these electrons to the anode of an electrochemical cell, in the absence of dissolved sulfide. Two experiments over 31 and 41 days were performed. At a sulfide loading rate of 1.1 mmolS/day, electricity was produced continuously (3 A/m2) without dissolved sulfide in the anolyte. The main end product was sulfate (56% in experiment 1% and 78% in experiment 2), and 87% and 77% of the electrons in sulfide were recovered as electricity. It was found that the current density was dependent on the sulfide loading rate and not on the anode potential. Biological growth occurred, mainly at the anode as biofilm, in which the deltaproteobacterial genus Desulfurivibrio was dominating. Our results demonstrate a novel strategy to produce electricity from sulfide in an electrochemical system. |
format |
Article/Letter to editor |
topic_facet |
Bio-anode Bioelectrochemistry Microbial electrochemical system Sulfide oxidizing bacteria (SOB) Sulfide removal |
author |
de Rink, Rieks B. Lavender, Micaela Liu, Dandan Klok, Johannes B.M. Sorokin, Dimitry Y. ter Heijne, Annemiek Buisman, Cees J.N. |
author_facet |
de Rink, Rieks B. Lavender, Micaela Liu, Dandan Klok, Johannes B.M. Sorokin, Dimitry Y. ter Heijne, Annemiek Buisman, Cees J.N. |
author_sort |
de Rink, Rieks |
title |
Continuous electron shuttling by sulfide oxidizing bacteria as a novel strategy to produce electric current |
title_short |
Continuous electron shuttling by sulfide oxidizing bacteria as a novel strategy to produce electric current |
title_full |
Continuous electron shuttling by sulfide oxidizing bacteria as a novel strategy to produce electric current |
title_fullStr |
Continuous electron shuttling by sulfide oxidizing bacteria as a novel strategy to produce electric current |
title_full_unstemmed |
Continuous electron shuttling by sulfide oxidizing bacteria as a novel strategy to produce electric current |
title_sort |
continuous electron shuttling by sulfide oxidizing bacteria as a novel strategy to produce electric current |
url |
https://research.wur.nl/en/publications/continuous-electron-shuttling-by-sulfide-oxidizing-bacteria-as-a- |
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