First evidence for applicability of the microbial electrochemical snorkel for metal recovery

Mitov, Mario; Bardarov, Ivo; Chorbadzhiyska, Elitsa; Kostov, Konstantin; Hubenova, Yolina

doi:10.1016/j.elecom.2020.106889

Cited by 8 publications

(3 citation statements)

References 20 publications

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“…Moreover, positive electric potentials were measured in the system containing electrodes, which was interpreted as the confirmation of presence of electroactive biofilms. Furthermore, MES was also applied for accelerating copper metal recovery [78].…”

Section: Microbial Electrochemical Snorkel (Mes)mentioning

confidence: 99%

Challenges and applications of nitrate-reducing microbial biocathodes

Rogińska

Philippon

Hoareau

et al. 2023

Bioelectrochemistry

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Section: Microbial Electrochemical Snorkel (Mes)mentioning

confidence: 99%

Challenges and applications of nitrate-reducing microbial biocathodes

Rogińska

Philippon

Hoareau

et al. 2023

Bioelectrochemistry

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“…Originally, the concept of such a microbial electrochemical snorkel, a simplified design of a "short-circuited" microbial fuel cell (MFC), was proposed as a means to accelerate the anaerobic treatment of wastewater relative to a traditional MFC. More recently, the potential of this technology to sustain redox processes over long periods, with no need for continued maintenance, has attracted the interest for broader applications, including environmental remediation [15,16,23] and also metal recovery [24]. However, application of BES to environments exposed to enhanced HP (i.e., 5 MPa) has been explored marginally: Reimers et al operated benthic microbial fuel cells at a cold seep (~10 MPa [25,26]), and Kobayashi et al conducted electromethanogenesis tests in laboratory-scale systems (5 MPa [27]).…”

Section: Introductionmentioning

confidence: 99%

Enhanced Hydrocarbons Biodegradation at Deep-Sea Hydrostatic Pressure with Microbial Electrochemical Snorkels

et al. 2021

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In anaerobic sediments, microbial degradation of petroleum hydrocarbons is limited by the rapid depletion of electron acceptors (e.g., ferric oxide, sulfate) and accumulation of toxic metabolites (e.g., sulfide, following sulfate reduction). Deep-sea sediments are increasingly impacted by oil contamination, and the elevated hydrostatic pressure (HP) they are subjected to represents an additional limitation for microbial metabolism. While the use of electrodes to support electrobioremediation in oil-contaminated sediments has been described, there is no evidence on their applicability for deep-sea sediments. Here, we tested a passive bioelectrochemical system named ”oil-spill snorkel” with two crude oils carrying different alkane contents (4 vs. 15%), at increased or ambient HP (10 vs. 0.1 MPa). Snorkels enhanced alkanes biodegradation at both 10 and 0.1 MPa within only seven weeks, as compared to nonconductive glass controls. Microprofiles in anaerobic, contaminated sediments indicated that snorkels kept sulfide concentration to low titers. Bulk-sediment analysis confirmed that sulfide oxidation by snorkels largely regenerated sulfate. Hence, the sole application of snorkels could eliminate a toxicity factor and replenish a spent electron acceptor at increased HP. Both aspects are crucial for petroleum decontamination of the deep sea, a remote environment featured by low metabolic activity.

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“…They also measured electric potential profiles on the depths of the sediment [8]. Recently, the first evidence of applicability of MES for metal recovery was described [9]. However, the electrochemical studies of the processes on sediment and water parts have not yet been described.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical analysis of a microbial electrochemical snorkel in laboratory and constructed wetlands

Rogińska

Perdicakis

Midoux

et al. 2021

Bioelectrochemistry

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First evidence for applicability of the microbial electrochemical snorkel for metal recovery

Cited by 8 publications

References 20 publications

Challenges and applications of nitrate-reducing microbial biocathodes

Challenges and applications of nitrate-reducing microbial biocathodes

Enhanced Hydrocarbons Biodegradation at Deep-Sea Hydrostatic Pressure with Microbial Electrochemical Snorkels

Electrochemical analysis of a microbial electrochemical snorkel in laboratory and constructed wetlands

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