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July 20, 2026ACS Sustainable Resource Management

Mechanistic Insights into Biochar-Enhanced Two-Stage Anaerobic Digestion of Food Waste: Significance of Microbial Community Dynamics

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Authors

NANesma Eltoukhy AllamBZBasem S. ZakariaMAMonisha Alam

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Overview

Randomized trial investigates biochar effects on biogas production and microbial dynamics in food waste digestion, suggesting potential benefits.

Key Points

  • This study aims to explore how biochar affects microbial dynamics and biogas production in two-stage anaerobic digestion of food waste.
  • Examined different biochar dosages (5, 15, and 25 g/L) in two-stage mesophilic anaerobic digestion of food waste.
  • Monitored biogas production, volatile fatty acids dynamics, organic removal, and microbial community structure.
  • Compared cumulative hydrogen and methane yields across biochar-amended reactors.
  • Cumulative hydrogen production increased by 23−30% in biochar-amended reactors during the first stage.
  • Cumulative methane yields increased by 31−41% in the second stage with biochar addition, particularly at 5 g/L.
  • Biochar promoted VFA accumulation and conversion to methane, enhancing microbial diversity and stimulating key taxa.

Cite This Study

Allam et al. (2026) studied this question.

synapsesocial.com/papers/6a5dba128bd453d3397ab4fahttps://doi.org/10.1021/acssusresmgt.6c00128
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