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Enhancement of bioelectricity generation by a  microbial fuel cell using Ti nanoparticle‐modified carbon electrode.

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Title: Enhancement of bioelectricity generation by a  microbial fuel cell using Ti nanoparticle‐modified carbon electrode.
Authors: Kim, Changman1 (AUTHOR), Kim, Jung Rae1 (AUTHOR), Heo, Jinhee2 (AUTHOR) pidellis@kims.re.kr
Source: Journal of Chemical Technology & Biotechnology. May2019, Vol. 94 Issue 5, p1622-1627. 6p.
Subjects: Microbial fuel cells, Carbon electrodes, Electrophysiology, Shewanella oneidensis, Charge exchange, Klebsiella pneumoniae
Abstract: BACKGROUND: Microbial fuel cells (MFCs) are promising devices that can be used to generate electricity from organic wastewater through microbial redox reactions. Various strategies have been attempted to improve the power generation of MFCs, including electrode modification. Titanium (Ti) is a biocompatible metal which is commonly used in various applications. This study examined the improvement of voltage generation by Ti nanoparticle attachment to the carbon electrode surface of an MFC by simple dipping and e‐beam evaporation. Two microbes, namely Shewanella oneidensis MR‐1 and Klebsiella pneumoniae L17, having different electron transfer mechanisms were used to identify the effects of Ti nanoparticles on bioelectricity generation. RESULTS: Voltage generation was significantly increased for the MFCs containing Ti nanoparticles, both using S. oneidensis MR‐1 and K. pneumoniae L17. Higher concentrations of DNA extracted from the electrode surface indicated that the Ti nanoparticles did not only assist the electron transfer process from the bacteria to the electrode but also microbial attachment on the carbon electrode. Energy‐dispersive X‐ray spectroscopy (EDS) experiments demonstrated the sustainability of the Ti nanoparticles, showing no significant changes in the attached Ti nanoparticles during an operation period of 3 weeks. CONCLUSION: It was demonstrated that the Ti‐dipping method is applicable to MFCs as an electrode modification strategy by Ti nanoparticle formation, leading to a similar level of voltage generation (but through a much simpler process) as compared with conventional evaporation methods. © 2019 Society of Chemical Industry [ABSTRACT FROM AUTHOR]
Copyright of Journal of Chemical Technology & Biotechnology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 135775235
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Enhancement of bioelectricity generation by a  microbial fuel cell using Ti nanoparticle‐modified carbon electrode.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Kim%2C+Changman%22">Kim, Changman</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kim%2C+Jung+Rae%22">Kim, Jung Rae</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Heo%2C+Jinhee%22">Heo, Jinhee</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> pidellis@kims.re.kr</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Chemical+Technology+%26+Biotechnology%22">Journal of Chemical Technology & Biotechnology</searchLink>. May2019, Vol. 94 Issue 5, p1622-1627. 6p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Microbial+fuel+cells%22">Microbial fuel cells</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+electrodes%22">Carbon electrodes</searchLink><br /><searchLink fieldCode="DE" term="%22Electrophysiology%22">Electrophysiology</searchLink><br /><searchLink fieldCode="DE" term="%22Shewanella+oneidensis%22">Shewanella oneidensis</searchLink><br /><searchLink fieldCode="DE" term="%22Charge+exchange%22">Charge exchange</searchLink><br /><searchLink fieldCode="DE" term="%22Klebsiella+pneumoniae%22">Klebsiella pneumoniae</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: BACKGROUND: Microbial fuel cells (MFCs) are promising devices that can be used to generate electricity from organic wastewater through microbial redox reactions. Various strategies have been attempted to improve the power generation of MFCs, including electrode modification. Titanium (Ti) is a biocompatible metal which is commonly used in various applications. This study examined the improvement of voltage generation by Ti nanoparticle attachment to the carbon electrode surface of an MFC by simple dipping and e‐beam evaporation. Two microbes, namely Shewanella oneidensis MR‐1 and Klebsiella pneumoniae L17, having different electron transfer mechanisms were used to identify the effects of Ti nanoparticles on bioelectricity generation. RESULTS: Voltage generation was significantly increased for the MFCs containing Ti nanoparticles, both using S. oneidensis MR‐1 and K. pneumoniae L17. Higher concentrations of DNA extracted from the electrode surface indicated that the Ti nanoparticles did not only assist the electron transfer process from the bacteria to the electrode but also microbial attachment on the carbon electrode. Energy‐dispersive X‐ray spectroscopy (EDS) experiments demonstrated the sustainability of the Ti nanoparticles, showing no significant changes in the attached Ti nanoparticles during an operation period of 3 weeks. CONCLUSION: It was demonstrated that the Ti‐dipping method is applicable to MFCs as an electrode modification strategy by Ti nanoparticle formation, leading to a similar level of voltage generation (but through a much simpler process) as compared with conventional evaporation methods. © 2019 Society of Chemical Industry [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Chemical Technology & Biotechnology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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        Value: 10.1002/jctb.5931
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      – Code: eng
        Text: English
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        PageCount: 6
        StartPage: 1622
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      – SubjectFull: Microbial fuel cells
        Type: general
      – SubjectFull: Carbon electrodes
        Type: general
      – SubjectFull: Electrophysiology
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      – SubjectFull: Shewanella oneidensis
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      – SubjectFull: Charge exchange
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      – SubjectFull: Klebsiella pneumoniae
        Type: general
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      – TitleFull: Enhancement of bioelectricity generation by a  microbial fuel cell using Ti nanoparticle‐modified carbon electrode.
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            NameFull: Kim, Changman
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            NameFull: Kim, Jung Rae
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            NameFull: Heo, Jinhee
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            – D: 01
              M: 05
              Text: May2019
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              Y: 2019
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