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The proton exchange membrane (PEM) is an integral part of the microbial fuel cell (MFC), which utilizes protons produced via metabolic pathways to assist in effective cell functioning. This chapter delves into the development of carbohydrate-based chitosan (CS) and guar gum (GG) blend PEMs for MFC applications. Various blend combinations of chitosan/guar gum were synthesized and crosslinked using glutaraldehyde; in addition, their performance via bioelectricity production and treatment of sugar factory effluent was investigated. The structural properties of membranes were analyzed via FTIR, XRD, water uptake, tensile strength, TGA and ion exchange capacity (IEC). Simultaneously, the performance of the MFC is assessed in terms of voltage, power generation, and COD. The maximum power density of the 4 wt.% crosslinked CS/GG PEM MFCs obtained were 2.021 mWm−2, 4.268 mWm−2, 0.8988 mWm−2, for 1:1, 3:1, 1:3 combinations, respectively. The COD removal efficiencies also followed a similar trend i.e., 55%, 58%, 52%, for the 1:1, 3:1, 1:3 CS/GG blend MFCs, respectively. The membrane’s water uptake and IEC were decreased with increasing glutaraldehyde concentrations due to the blocking of external amino and hydroxyl hydrophilic functional groups. COD, pH, TDS and TSS showed decreasing trends, however, the opposite was observed for conductivity and dissolved oxygen.

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Biopolymer Blend Membranes for Energy Production and Simultaneous Wastewater Treatment in the Microbial Fuel Cell

  • 章节

  • 发表日期：

    2025年

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  • Matthus J. Walter,
  • Cheng-Chien Wang,
  • Srinivasa R. Popuri

摘要

The proton exchange membrane (PEM) is an integral part of the microbial fuel cell (MFC), which utilizes protons produced via metabolic pathways to assist in effective cell functioning. This chapter delves into the development of carbohydrate-based chitosan (CS) and guar gum (GG) blend PEMs for MFC applications. Various blend combinations of chitosan/guar gum were synthesized and crosslinked using glutaraldehyde; in addition, their performance via bioelectricity production and treatment of sugar factory effluent was investigated. The structural properties of membranes were analyzed via FTIR, XRD, water uptake, tensile strength, TGA and ion exchange capacity (IEC). Simultaneously, the performance of the MFC is assessed in terms of voltage, power generation, and COD. The maximum power density of the 4 wt.% crosslinked CS/GG PEM MFCs obtained were 2.021 mWm−2, 4.268 mWm−2, 0.8988 mWm−2, for 1:1, 3:1, 1:3 combinations, respectively. The COD removal efficiencies also followed a similar trend i.e., 55%, 58%, 52%, for the 1:1, 3:1, 1:3 CS/GG blend MFCs, respectively. The membrane’s water uptake and IEC were decreased with increasing glutaraldehyde concentrations due to the blocking of external amino and hydroxyl hydrophilic functional groups. COD, pH, TDS and TSS showed decreasing trends, however, the opposite was observed for conductivity and dissolved oxygen.