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An integrated energy recovery approach of biohythane-biocrude production from microalgae-sludge through co-digestion and co-liquefaction

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  • Khalekuzzaman, Md
  • Jahan, Nusrat
  • Bin Kabir, Sadib
  • Hasan, Mehedi

Abstract

Higher energy recovery from wet-waste is a challenging task while considering the waste-to-energy approach to tackle the huge wet-waste biomass generated around the globe. This study took the opportunity to explore the combined approach of biohythane (e.g., bioH2 and bioCH4) and biocrude generation using two-stage anaerobic digestion coupled with hydrothermal liquefaction (TSAD-HTL). The finding of this study suggests that the highest biohythane productivity of 268.7 mL/g-VS with energy recovery of 9.95 MJ/kg-VS was produced from sludge-microalgae co-digestion, which was 17% and 205% higher than mono-digestion of microalgae and sludge, respectively. In addition, the highest biocrude yield of 45.4% was obtained from sludge-microalgae-derived digestate. The lighter fraction (

Suggested Citation

  • Khalekuzzaman, Md & Jahan, Nusrat & Bin Kabir, Sadib & Hasan, Mehedi, 2024. "An integrated energy recovery approach of biohythane-biocrude production from microalgae-sludge through co-digestion and co-liquefaction," Renewable Energy, Elsevier, vol. 225(C).
    • Handle: RePEc:eee:renene:v:225:y:2024:i:c:s0960148124004087
    DOI: 10.1016/j.renene.2024.120343
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