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<p>The focus on the biomass waste-generated graphitized carbon-employed anode for the single-chambered microbial fuel cell (SMFC) is extremely limited in the literature. Additionally, grafting, as well as&#xa0;the sulfonation process, has been hardly explored. Thus, this present investigation incorporates a synthetic approach in which lemongrass-derived graphitized carbon&#xa0;is activated&#xa0;through sulfonation (S-KLg). Furthermore, it is attached to sulfonic acid functionalized carbon fibers brush by employing the grafting process using glutaraldehyde as a grafting agent (denoted as S-KLg@GCB),&#xa0;for the application in SMFC. The results suggest that S-KLg possesses a three-dimensional porous structure, signifying the likelihood of adhesion and growth of microorganisms, and it also exhibited high conductivity and capacitance. Furthermore, the SMFC with S-KLg@GCB as an anode has shown a significant augmentation in the power density with a corresponding value of 1452.7 mW/m<sup>3</sup>, which is 1.95 times higher than that of a plain carbon brush anode.</p> Graphical abstract <p></p>

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Development of sulfonated porous graphitized carbon by pyrolysis from lemongrass and its coating on sulfonated carbon brush for use as anode in single chambered microbial fuel cell

  • 期刊论文

  • 发表日期：

    2025年3月31日

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  • Rinki,
  • Dipankar Saha,
  • Geetanjali,
  • Deepak Kumar,
  • Patit Paban Kundu

摘要

The focus on the biomass waste-generated graphitized carbon-employed anode for the single-chambered microbial fuel cell (SMFC) is extremely limited in the literature. Additionally, grafting, as well as the sulfonation process, has been hardly explored. Thus, this present investigation incorporates a synthetic approach in which lemongrass-derived graphitized carbon is activated through sulfonation (S-KLg). Furthermore, it is attached to sulfonic acid functionalized carbon fibers brush by employing the grafting process using glutaraldehyde as a grafting agent (denoted as S-KLg@GCB), for the application in SMFC. The results suggest that S-KLg possesses a three-dimensional porous structure, signifying the likelihood of adhesion and growth of microorganisms, and it also exhibited high conductivity and capacitance. Furthermore, the SMFC with S-KLg@GCB as an anode has shown a significant augmentation in the power density with a corresponding value of 1452.7 mW/m3, which is 1.95 times higher than that of a plain carbon brush anode.

Graphical abstract