Yang, T.S.; Flores-Rodriguez, C.; Torres-Albarracin, L.; Silva, A.J. Thermochemical Pretreatment for Improving the Psychrophilic Anaerobic Digestion of Coffee Husks. Methane2024, 3, 214-226.
Yang, T.S.; Flores-Rodriguez, C.; Torres-Albarracin, L.; Silva, A.J. Thermochemical Pretreatment for Improving the Psychrophilic Anaerobic Digestion of Coffee Husks. Methane 2024, 3, 214-226.
Yang, T.S.; Flores-Rodriguez, C.; Torres-Albarracin, L.; Silva, A.J. Thermochemical Pretreatment for Improving the Psychrophilic Anaerobic Digestion of Coffee Husks. Methane2024, 3, 214-226.
Yang, T.S.; Flores-Rodriguez, C.; Torres-Albarracin, L.; Silva, A.J. Thermochemical Pretreatment for Improving the Psychrophilic Anaerobic Digestion of Coffee Husks. Methane 2024, 3, 214-226.
Abstract
Psychrophilic anaerobic digestion emerges as an appealing integrated solution for the management of agricultural waste, particularly for farmers in regions where the average temperature does not exceed 26°C, as seen in coffee cultivation. Therefore, this study seeks to assess the biomethane potential of thermochemical treated coffee husk through psychrophilic anaerobic digestion (C3-20°C-w/pretreatment). To examine its viability, outcomes were compared with reactors operating at both mesophilic (C1-35°C) and psychrophilic (C2-20°C) conditions, albeit without the use of pretreated coffee husk. The C3-20°C-w/pretreatment test demonstrated a 36.89% increase (150.47 mL CH4/g VS; 161.04 mL CH4/g COD), while the C1-35°C test exhibited a 24.03% increase (124.99 mL CH4/g VS; 133.77 mL CH4/g COD), both in comparison to the C2-20°C test (94.96 mL CH4/g VS; 101.63 mL CH4/g COD). Notably, the C3-20°C-w/pretreatment trial yielded superior outcomes, accompanied by an associated energy output of 4262.2 KWh/year, sufficient to meet the annual energy demands of 588 residences. This marks an increase of 100 and 217 residences compared to mesophilic and psychrophilic AD of CH without pretreatment, respectively.
Environmental and Earth Sciences, Waste Management and Disposal
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