<p>This study evaluated the potential of leftover rose petals, a cellulose-based substrate from Kannauj’s attar industry, for domestic reverse osmosis (RO) reject water treatment in a double-chamber microbial fuel cell (MFC). Comparative experiments were conducted using fresh rose petals as a control substrate at varying concentrations (15&#xa0;g/L, 20&#xa0;g/L, and 25&#xa0;g/L) to assess system performance. Electrochemical analysis, including electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and power and current density measurements, was performed under optimal conditions using pre-isolated electroactive bacteria <i>Pseudomonas aeruginosa</i>. The highest power density of 305 mW/m² was achieved at a substrate concentration of 20&#xa0;g/L, with a corresponding internal resistance of 55.5 Ω. These results demonstrated the viability of repurposing leftover rose petals from the attar industry as a sustainable substrate for bioelectricity generation and domestic RO reject water treatment in MFC systems.</p>

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Enhanced Bioelectricity Generation from Microbial Fuel Cell Using Leftover Rose Petals after Attar Production as a Sustainable Substrate

  • Kumar Sonu,
  • Shivam Yadav,
  • Karishma Maheshwari,
  • Zainab Syed,
  • Manoj Kumar Tiwari,
  • Monika Sogani

摘要

This study evaluated the potential of leftover rose petals, a cellulose-based substrate from Kannauj’s attar industry, for domestic reverse osmosis (RO) reject water treatment in a double-chamber microbial fuel cell (MFC). Comparative experiments were conducted using fresh rose petals as a control substrate at varying concentrations (15 g/L, 20 g/L, and 25 g/L) to assess system performance. Electrochemical analysis, including electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and power and current density measurements, was performed under optimal conditions using pre-isolated electroactive bacteria Pseudomonas aeruginosa. The highest power density of 305 mW/m² was achieved at a substrate concentration of 20 g/L, with a corresponding internal resistance of 55.5 Ω. These results demonstrated the viability of repurposing leftover rose petals from the attar industry as a sustainable substrate for bioelectricity generation and domestic RO reject water treatment in MFC systems.