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Effect of hydrochar-doping on the performance of carbon felt as anodic electrode in microbial fuel cells.

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Title: Effect of hydrochar-doping on the performance of carbon felt as anodic electrode in microbial fuel cells.
Authors: Delgado, Yelitza1 (AUTHOR), Tapia, Natalia1,2 (AUTHOR), Muñoz-Morales, Martín1 (AUTHOR), Ramirez, Álvaro1 (AUTHOR), Llanos, Javier1 (AUTHOR), Vargas, Ignacio2 (AUTHOR), Fernández-Morales, Francisco Jesús1 (AUTHOR) FcoJesus.FMorales@uclm.es
Source: Environmental Science & Pollution Research. Oct2025, Vol. 32 Issue 49, p28253-28265. 13p.
Subject Terms: *Microbial fuel cells, *Bioelectrochemistry, *Pyrolysis, *Carbon fibers, *Electrochemical electrodes, *Circular economy, *Electric power production, *Biochar
Abstract: In this study, the feasibility of using hydrochars as anodic doping materials in microbial fuel cells (MFCs) was investigated. The feedstock used for hydrochar synthesis was metal-polluted plant biomass from an abandoned mining site. The hydrochar obtained was activated by pyrolysis at 500 °C in N2 atmosphere. Under steady state conditions, the current exerted by the MFCs, as well as the cyclic voltammetry and polarization curves, showed that the activated hydrochar-doped anodes exhibited the best performance in terms of power and current density generation, 0.055 mW/cm2 and 0.15 mA/cm2, respectively. These values were approximately 30% higher than those achieved with non-doped or doped with non-activated hydrochar anodes which can be explained by the highly graphitic carbonaceous structures obtained during the hydrochar activation that reduced the internal resistance of the system. These results suggest that the activated hydrochar materials could significantly enhance the electrochemical performance of bioelectrochemical systems. Moreover, this integration will not only enhance the energy generated by MFCs, but also valorize metal polluted plant biomass within the frame of the circular economy. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 190356873
AccessLevel: 6
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PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
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  Data: Effect of hydrochar-doping on the performance of carbon felt as anodic electrode in microbial fuel cells.
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  Data: <searchLink fieldCode="AR" term="%22Delgado%2C+Yelitza%22">Delgado, Yelitza</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tapia%2C+Natalia%22">Tapia, Natalia</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Muñoz-Morales%2C+Martín%22">Muñoz-Morales, Martín</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ramirez%2C+Álvaro%22">Ramirez, Álvaro</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Llanos%2C+Javier%22">Llanos, Javier</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Vargas%2C+Ignacio%22">Vargas, Ignacio</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fernández-Morales%2C+Francisco+Jesús%22">Fernández-Morales, Francisco Jesús</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> FcoJesus.FMorales@uclm.es</i>
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  Data: <searchLink fieldCode="JN" term="%22Environmental+Science+%26+Pollution+Research%22">Environmental Science & Pollution Research</searchLink>. Oct2025, Vol. 32 Issue 49, p28253-28265. 13p.
– Name: Subject
  Label: Subject Terms
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  Data: *<searchLink fieldCode="DE" term="%22Microbial+fuel+cells%22">Microbial fuel cells</searchLink><br />*<searchLink fieldCode="DE" term="%22Bioelectrochemistry%22">Bioelectrochemistry</searchLink><br />*<searchLink fieldCode="DE" term="%22Pyrolysis%22">Pyrolysis</searchLink><br />*<searchLink fieldCode="DE" term="%22Carbon+fibers%22">Carbon fibers</searchLink><br />*<searchLink fieldCode="DE" term="%22Electrochemical+electrodes%22">Electrochemical electrodes</searchLink><br />*<searchLink fieldCode="DE" term="%22Circular+economy%22">Circular economy</searchLink><br />*<searchLink fieldCode="DE" term="%22Electric+power+production%22">Electric power production</searchLink><br />*<searchLink fieldCode="DE" term="%22Biochar%22">Biochar</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In this study, the feasibility of using hydrochars as anodic doping materials in microbial fuel cells (MFCs) was investigated. The feedstock used for hydrochar synthesis was metal-polluted plant biomass from an abandoned mining site. The hydrochar obtained was activated by pyrolysis at 500 °C in N2 atmosphere. Under steady state conditions, the current exerted by the MFCs, as well as the cyclic voltammetry and polarization curves, showed that the activated hydrochar-doped anodes exhibited the best performance in terms of power and current density generation, 0.055 mW/cm2 and 0.15 mA/cm2, respectively. These values were approximately 30% higher than those achieved with non-doped or doped with non-activated hydrochar anodes which can be explained by the highly graphitic carbonaceous structures obtained during the hydrochar activation that reduced the internal resistance of the system. These results suggest that the activated hydrochar materials could significantly enhance the electrochemical performance of bioelectrochemical systems. Moreover, this integration will not only enhance the energy generated by MFCs, but also valorize metal polluted plant biomass within the frame of the circular economy. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
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      – Type: doi
        Value: 10.1007/s11356-024-33338-2
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 13
        StartPage: 28253
    Subjects:
      – SubjectFull: Microbial fuel cells
        Type: general
      – SubjectFull: Bioelectrochemistry
        Type: general
      – SubjectFull: Pyrolysis
        Type: general
      – SubjectFull: Carbon fibers
        Type: general
      – SubjectFull: Electrochemical electrodes
        Type: general
      – SubjectFull: Circular economy
        Type: general
      – SubjectFull: Electric power production
        Type: general
      – SubjectFull: Biochar
        Type: general
    Titles:
      – TitleFull: Effect of hydrochar-doping on the performance of carbon felt as anodic electrode in microbial fuel cells.
        Type: main
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          Name:
            NameFull: Delgado, Yelitza
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            NameFull: Tapia, Natalia
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            NameFull: Muñoz-Morales, Martín
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            NameFull: Ramirez, Álvaro
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            NameFull: Llanos, Javier
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            NameFull: Fernández-Morales, Francisco Jesús
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            – D: 16
              M: 10
              Text: Oct2025
              Type: published
              Y: 2025
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              Value: 09441344
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              Value: 32
            – Type: issue
              Value: 49
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            – TitleFull: Environmental Science & Pollution Research
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