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<p>With modern technology, bio-wastes are effectively utilized by producing hydrogen energy, which is replaced by fossil fuels and has the potential for environmental sustainability. Moreover, the hydrogen yield is closely related to biomass growth (density). This investigation synthesizes and extracts the bio-hydrogen from the source of animal manure bio-waste via a supercritical gasification route followed by 700–1000&#xa0;°C gasification temperature for a 30-min processing duration. The animal manure bio-waste/microalgae cultivation growth enriched by the incorporation of 0.1, 0.15, 0.2, and 0.25 vol% of zinc oxide (ZnO) nanoparticles ensures the high mass transfer and increase the specific growth of biomass. The influence of higher ZnO showed a better specific growth rate and harvesting efficiency of 0.83 microns/day and 86.75%. The enriched animal manure bio-waste/microalgae are subjected to a supercritical gasification process with varied gasification temperatures and 250&#xa0;bar pressure. The effect of gasification temperature on hydrogen molar percentage, hydrogen yield, hydrogen selectivity, and gasification efficiency is experimentally analyzed and spotted higher gasification temperature of 1200&#xa0;°C showed superior hydrogen molar percentage, hydrogen yield, hydrogen selectivity, and superior gasification efficiency of 61%, 28.3&#xa0;mol/kg, 18.4, and 83.5% respectively. The extracted bio-hydrogen energy is suggested for alternative fuel applications.</p>

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Enhancement of light diffusion on microalgae cultivation for bio-hydrogen yield via supercritical water gasification: characteristics study

  • 期刊论文

  • 发表日期：

    2025年2月12日

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  • R. Venkatesh,
  • Prashant Sharma,
  • Nagabhooshanam Nagarajan,
  • Vinayagam Mohanavel,
  • K. Karthik,
  • Nilesh Bhosle,
  • Manikandan Ayyar,
  • M. Ravichandran,
  • Manzoore Elahi M. Soudagar

摘要

With modern technology, bio-wastes are effectively utilized by producing hydrogen energy, which is replaced by fossil fuels and has the potential for environmental sustainability. Moreover, the hydrogen yield is closely related to biomass growth (density). This investigation synthesizes and extracts the bio-hydrogen from the source of animal manure bio-waste via a supercritical gasification route followed by 700–1000 °C gasification temperature for a 30-min processing duration. The animal manure bio-waste/microalgae cultivation growth enriched by the incorporation of 0.1, 0.15, 0.2, and 0.25 vol% of zinc oxide (ZnO) nanoparticles ensures the high mass transfer and increase the specific growth of biomass. The influence of higher ZnO showed a better specific growth rate and harvesting efficiency of 0.83 microns/day and 86.75%. The enriched animal manure bio-waste/microalgae are subjected to a supercritical gasification process with varied gasification temperatures and 250 bar pressure. The effect of gasification temperature on hydrogen molar percentage, hydrogen yield, hydrogen selectivity, and gasification efficiency is experimentally analyzed and spotted higher gasification temperature of 1200 °C showed superior hydrogen molar percentage, hydrogen yield, hydrogen selectivity, and superior gasification efficiency of 61%, 28.3 mol/kg, 18.4, and 83.5% respectively. The extracted bio-hydrogen energy is suggested for alternative fuel applications.