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<p>In the present work, a novel attempt has been made to improve the solubilization of food waste (FW<sub>sol</sub>) and bioenergy recovery from food waste through alkyl polyglycoside (APG) surfactant-mediated ultrasonic pretreatment (SMUSP), and the results were compared to ultrasonic pretreatment (USP). The USP is carried out first and optimized for sonic power and sonication time, and then the SMUSP is conducted at the optimized sonic power by varying the APG dosage and sonication time. The outcome of this investigation shows that the FW<sub>sol</sub> of 21.3% was achieved during SMUSP at the optimal specific energy demand of 3211&#xa0;kJ/kgTS and APG dosage of 8&#xa0;µL and showed higher results than the USP with FW<sub>sol</sub> of 15.9% at the optimal 6860&#xa0;kJ/kgTS. The decrement in pretreatment energy demand and increment in FW<sub>sol</sub> confirms the synergistic effect exhibited by APG. The output energy in kWh was calculated based on the generated biomethane, and bioenergy recovered via SMUSP was found to be 1634.4 kWh, which was higher than USP (748.8 kWh). Further, SMUSP was found to be an energy-feasible pretreatment method with an energy ratio of 1.35, demonstrating the practical feasibility of SMUSP compared to USP of 0.37.</p>

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Unleashing the Biomethane Production Potential of Food Waste Through a Non-Toxic Biosurfactant Aided Ultrasonic Disintegration: Impact on Solubilization, Process Optimization, and Energy Feasibility Studies

  • 期刊论文

  • 发表日期：

    2025年4月18日

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  • M. C. Eniyan,
  • M. Edwin

摘要

In the present work, a novel attempt has been made to improve the solubilization of food waste (FWsol) and bioenergy recovery from food waste through alkyl polyglycoside (APG) surfactant-mediated ultrasonic pretreatment (SMUSP), and the results were compared to ultrasonic pretreatment (USP). The USP is carried out first and optimized for sonic power and sonication time, and then the SMUSP is conducted at the optimized sonic power by varying the APG dosage and sonication time. The outcome of this investigation shows that the FWsol of 21.3% was achieved during SMUSP at the optimal specific energy demand of 3211 kJ/kgTS and APG dosage of 8 µL and showed higher results than the USP with FWsol of 15.9% at the optimal 6860 kJ/kgTS. The decrement in pretreatment energy demand and increment in FWsol confirms the synergistic effect exhibited by APG. The output energy in kWh was calculated based on the generated biomethane, and bioenergy recovered via SMUSP was found to be 1634.4 kWh, which was higher than USP (748.8 kWh). Further, SMUSP was found to be an energy-feasible pretreatment method with an energy ratio of 1.35, demonstrating the practical feasibility of SMUSP compared to USP of 0.37.