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The study introduces a wood carbon electrode in a Microbial Fuel Cell to enhance chromium reduction and bioelectricity generation, showing complete removal of Cr(VI) within 48 hours. The wood carbon electrode outperformed traditional carbon cloth and carbon felt electrodes. This innovation has potential for efficient wastewater treatment and electricity generation.

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What they did

System
MFC

What worked

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Abstract

Abstract Microbial Fuel Cell (MFC) remediate hexavalent chromium (Cr(VI)) in wastewater, but inefficient removal for wide scale. In this study, a wood carbon (WC) electrode was introduce in MFC to analyzed the Cr(VI) remediation mechanism and effect of WC on it. The results show that the Cr(VI) was completely removed with WC electrode as compare to the carbon cloth (31.12 ± 0.31%) and carbon felt (34.83% ± 0.12) within 48 hours. The maximum power density of the WC electrode was 62.59 ± 0.27 mW m − 2 . Here in, WC might a good choice with a three-dimensional porous structure for Cr(VI) contaminated wastewater treatment and electricity generation in MFC.

Key findings

  • Complete removal of Cr(VI) within 48 hours using a wood carbon electrode
  • Maximum power density of 62.59 ± 0.27 mW m−2 achieved with the wood carbon electrode
  • Wood carbon electrode outperformed carbon cloth (31.12 ± 0.31%) and carbon felt (34.83% ± 0.12) electrodes

Keywords

Microbial fuel cellCarbon fibersReduction (mathematics)ElectrodeChromiumFuel cells

Identifiers

DOI
10.21203/rs.3.rs-317432/v1
Journal
Research Square
Year
2021