ArticleScientific reports2026
Biomass to bio-CNG from sorghum varieties for biogas production, energy recovery, and emission mitigation.
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
Sorghum (Sorghum bicolor) has emerged as a promising lignocellulosic substrate for anaerobic digestion; however, its biogas production potential and energy recovery efficiency are strongly influenced by varietal characteristics and operating temperature. In this study, eleven sorghum varieties were evaluated for their biogas production potential, biodigestibility, and theoretical energy recovery efficiency under mesophilic (37 ℃) and thermophilic (55 ℃) conditions. The experiments were conducted in 250 mL batch-scale anaerobic digestors operated for 60 days. A clear difference in biogas yield was observed, with consistently higher yields in thermophilic reactors. Among the evaluated varieties, Combined Sorghum Variety-48 (CSV-48), Combined Sorghum Variety-49 Sweet sorghum (CSV-49SS), yellow sorghum, and white sorghum showed superior biogas productivity and higher total solids, volatile solids, and chemical oxygen demand removal efficiencies. Assuming 50% methane content, Bio-Compressed Natural Gas (Bio-CNG) potential ranged from 36.06 to 83.27 Nm
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