Upgrading fluidized bed bioelectrochemical reactors for treating brewery wastewater by using a fluid-like electrode

Asensio, Yeray; Llorente, María Victoria; Fernández, Patricia; Tejedor-Sanz, Sara; Ortíz, Juan Manuel; Ciriza, Juan Francisco; Monsalvo, Victor M.; Rogalla, Frank; Esteve‐Núñez, Abraham

doi:10.1016/j.cej.2020.127103

Cited by 16 publications

(3 citation statements)

References 51 publications

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“…Finally, the maximum H2 production obtained in the current study is among the highest reported, which indicates the potential of the APR process for the treatment and valorisation of wastewater, including brewery wastewater. The highest H2 production was reported for microbial electrochemical technology (Asensio et al, 2021), showing the potential of this technique if some drawbacks, such as long hydraulic retention and stabilization time, are overcome.…”

Section: Effect Of Superficial Ar Flow Velocitymentioning

confidence: 99%

Continuous aqueous phase reforming of a synthetic brewery wastewater with Pt/C and PtRe/C catalysts for biohydrogen production

et al. 2021

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Section: Effect Of Superficial Ar Flow Velocitymentioning

confidence: 99%

Continuous aqueous phase reforming of a synthetic brewery wastewater with Pt/C and PtRe/C catalysts for biohydrogen production

et al. 2021

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“…Both configurations have previously been developed at the pilot and commercial scales. Like the continuously operated bubble‐column/gas‐lift loop reactors to produce ethanol with these technologies of LanzaTech (Takors et al., 2018 ) and the bioelectrochemical reactor for anodic electrobioremediation of industrial wastewater (Asensio, Llorente, Fernández, et al., 2021 ; Asensio, Llorente, Tejedor‐Sanz, et al., 2021 ; Tejedor‐Sanz et al., 2018 , 2019 ). In this reactor configuration, the electrode must have a highly biocompatible surface, high chemical stability, high electron transfer rate and high hydrophilicity (Noori et al., 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Novel electrochemical strategies for the microbial conversion of CO₂ into biomass and volatile fatty acids using a fluid‐like bed electrode in a three‐phase reactor

Llorente,

Tejedor‐Sanz,

Berná

et al. 2024

Microbial Biotechnology

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Microbial electrosynthesis (MES) constitutes a bioelectrochemical process where bacteria uptake electrons extracellularly from a polarized electrode to incorporate them into their anabolic metabolism. However, the efficiency of current MES reactor designs can be lower than expected due to limitations regarding electron transfer and mass transport. One of the most promising bioreactor configurations to overcome these bottlenecks is the Microbial Electrochemical Fluidized Bed Reactor (ME‐FBR). In this study, microbial CO2 fixation is investigated for the first time in a ME‐FBR operated as a 3‐phase reactor (solid–liquid–gas). An electroconductive carbon bed, acting as a working electrode, was fluidized with gas and polarized at different potentials (−0.6, −0.8 and −1 V vs. Ag/AgCl) so it could act as an electron donor (biocathode). Under these potentials, CO2 fixation and electron transfer were evaluated. Autotrophic electroactive microorganisms from anaerobic wastewater were enriched in a ME‐FBR in the presence of 2‐bromoethanosulfonic acid (BES) to inhibit the growth of methanogens. Cyclic voltammetry analysis revealed interaction between the microorganisms and the cathode. Furthermore, volatile fatty acids like propionate, formate and acetate were detected in the culture supernatant. Acetate production had a maximum rate of ca. 1 g L−1 day−1. Planktonic cell biomass was produced under continuous culture at values as high as ca. 0.7 g L−1 dry weight. Overall, this study demonstrates the feasibility of employing a fluidized electrode with gaseous substrates and electricity as the energy source for generating biomass and carboxylic acids.

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“…The result is a hybrid concept hosting both the optimal mass transfer of fluidized bed reactors and the high biodegradation rate of bioelectrochemical systems. This new concept has already been successfully operated for treating brewery wastewater (Tejedor-Sanz et al, 2016, 2017aAsensio et al, 2021). In addition, the absence of ionic membranes in ME-FBR decreases further capital costs present in more conventional systems (Tiquia-Arashiro and Pant, 2020).…”

Section: Introductionmentioning

confidence: 99%

Microbial Electrochemical Fluidized Bed Reactor: A Promising Solution for Removing Pollutants From Pharmaceutical Industrial Wastewater

et al. 2021

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The capacity of electroactive bacteria to exchange electrons with electroconductive materials has been explored during the last two decades as part of a new field called electromicrobiology. Such microbial metabolism has been validated to enhance the bioremediation of wastewater pollutants. In contrast with standard materials like rods, plates, or felts made of graphite, we have explored the use of an alternative strategy using a fluid-like electrode as part of a microbial electrochemical fluidized bed reactor (ME-FBR). After verifying the low adsorption capacity of the pharmaceutical pollutants on the fluid-bed electrode [7.92 ± 0.05% carbamazepine (CBZ) and 9.42 ± 0.09% sulfamethoxazole (SMX)], our system showed a remarkable capacity to outperform classical solutions for removing pollutants (more than 80%) from the pharmaceutical industry like CBZ and SMX. Moreover, the ME-FBR performance revealed the impact of selecting an anode potential by efficiently removing both pollutants at + 200 mV. The high TOC removal efficiency also demonstrated that electrostimulation of electroactive bacteria in ME-FBR could overcome the expected microbial inhibition due to the presence of CBZ and SMX. Cyclic voltammograms revealed the successful electron transfer between microbial biofilm and the fluid-like electrode bed throughout the polarization tests. Finally, Vibrio fischeri-based ecotoxicity showed a 70% reduction after treating wastewater with a fluid-like anode (+ 400 mV), revealing the promising performance of this bioelectrochemical approach.

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Upgrading fluidized bed bioelectrochemical reactors for treating brewery wastewater by using a fluid-like electrode

Cited by 16 publications

References 51 publications

Continuous aqueous phase reforming of a synthetic brewery wastewater with Pt/C and PtRe/C catalysts for biohydrogen production

Continuous aqueous phase reforming of a synthetic brewery wastewater with Pt/C and PtRe/C catalysts for biohydrogen production

Novel electrochemical strategies for the microbial conversion of CO₂ into biomass and volatile fatty acids using a fluid‐like bed electrode in a three‐phase reactor

Microbial Electrochemical Fluidized Bed Reactor: A Promising Solution for Removing Pollutants From Pharmaceutical Industrial Wastewater

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Upgrading fluidized bed bioelectrochemical reactors for treating brewery wastewater by using a fluid-like electrode

Cited by 16 publications

References 51 publications

Continuous aqueous phase reforming of a synthetic brewery wastewater with Pt/C and PtRe/C catalysts for biohydrogen production

Continuous aqueous phase reforming of a synthetic brewery wastewater with Pt/C and PtRe/C catalysts for biohydrogen production

Novel electrochemical strategies for the microbial conversion of CO2 into biomass and volatile fatty acids using a fluid‐like bed electrode in a three‐phase reactor

Microbial Electrochemical Fluidized Bed Reactor: A Promising Solution for Removing Pollutants From Pharmaceutical Industrial Wastewater

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Product

Resources

About

Novel electrochemical strategies for the microbial conversion of CO₂ into biomass and volatile fatty acids using a fluid‐like bed electrode in a three‐phase reactor