ArticleScientific reports2026
Integrated torrefaction-anaerobic digestion of bamboo waste for enhanced energy recovery: process optimization, product characterization, and techno-economic evaluation.
Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
This study evaluates an integrated valorization pathway for bamboo waste that combines torrefaction and anaerobic digestion (AD) to recover energy from both solid and liquid process streams within a circular economy framework. Specifically, a dual-stream valorization approach is developed to maximize energy recovery from both bio-coal and torrefaction condensate. Bamboo's high lignin content (24-27 wt%), low ash content (< 3 wt%), and favorable volatile composition enable enhanced thermochemical upgrading and subsequent biochemical energy recovery. Torrefaction at 290 °C for 60 min increased the higher heating value (HHV) of bio-coal from 17.6 [Formula: see text] 0.4 MJ/kg to 25.4 [Formula: see text] 1.5 MJ/kg, accompanied by ~ 66% reduction in volatile matter and significant lignin enrichment, resulting in improved fuel quality. The aqueous condensate, typically underutilized, containing biodegradable organic acids with low inhibitor concentrations achieved a biomethane potential of 493 [Formula: see text] 1.7 mL-CH
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