Prediction of methane yield and pretreatment efficiency of lignocellulosic biomass based on composition

Lymperatou, Anna; Engelsen, Thor K.; Skiadas, Ioannis V.; Gavala, Hariklia N.

doi:10.1016/j.wasman.2022.10.040

Cited by 18 publications

(3 citation statements)

References 32 publications

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“…In addition to ADF, crude protein content also plays an important role in animal nutrition [60]. In biogas production, however, mainly the content of crude fat and lignocellulose (hemicellulose, cellulose, and lignin) is decisive for the expected biogas yield [31,61,62]. The results presented are also consistent with this finding (see Section 3.3).…”

Section: Chemical Composition Of Harvested Biomass During the Vegetat...supporting

confidence: 80%

Anaerobic Digestion of Cuttings from Grassland in Protected Landscape Areas

Brandhorst,

Hülsemann,

Ohnmacht

et al. 2024

Inventions

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Orchard meadows are biodiversity hotspots, as the understory often consists of species-rich lowland hay meadows. Due to the low energy density of the grass, it is not suitable as feed, but the energetic utilisation of cuttings from orchard meadows for biogas production could facilitate the protection of these semi-natural grasslands. Here, lowland hay meadows and extensively used orchards were investigated to assess their potential for anaerobic digestion in biogas plants. Aboveground biomass was harvested weekly from three lowland hay meadows differing in conservation statuses and analysed for cell wall components (aNDF, ADF, and ADL), nutritional values (XF, XL, XP), and methane formation potential by anaerobic digestion. Further, orchard meadows were harvested twice during summer and analysed in the same way. Specific methane yield decreased linearly with cutting dates from 0.325 m3 kg−1(oDM) to 0.237 m3 kg−1(oDM). The cumulated area-related methane yields of the orchards ranged from 818 m3 ha−1 to 1036 m3 ha−1. Specific methane yields were linearly correlated with XL, aNDF, ADF, and ADL.

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Section: Chemical Composition Of Harvested Biomass During the Vegetat...supporting

confidence: 80%

Anaerobic Digestion of Cuttings from Grassland in Protected Landscape Areas

Brandhorst,

Hülsemann,

Ohnmacht

et al. 2024

Inventions

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show abstract

“…Therefore, a successful hydrolysis conversion of the biodegradable components within CH aligns with an effective biomethanation process [44]. In addition, this model can simulate the biomethane accumulation based on an exponential rise to the maximum [45][46][47]. The production of methane was assumed to follow Equation ( 8) and was simulated via a non-linear regression analysis using the 'Solver' function in Microsoft Excel Software, 2007.…”

Section: First-order Kinetic Modelmentioning

confidence: 99%

Thermochemical Pretreatment for Improving the Psychrophilic Anaerobic Digestion of Coffee Husks

Yang,

Flores-Rodriguez,

Torres-Albarracin

et al. 2024

Methane

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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 NmL CH4/g VS; 161.04 NmL CH4/g COD), while the C1-35 °C test exhibited a 24.03% increase (124.99 NmL CH4/g VS; 133.77 NmL CH4/g COD), both in comparison to the C2-20 °C test (94.96 NmL CH4/g VS; 101.63 NmL CH4/g COD). Notably, the C3-20 °C-w/pretreatment trial yielded superior outcomes, accompanied by an associated energy output of 3199.25 GWh/year, sufficient to meet the annual energy demands of 494 residences. This marks an increase of 83 and 182 million residences compared to the mesophilic and psychrophilic AD of CH without pretreatment, respectively.

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“…This model is commonly employed when hydrolysis represents the rate-limiting stage in AD, particularly in cases where lignocellulosic feedstock serves as the substrate. This assumes that the gas production follows first order kinetics in which biogas accumulation was simulated using exponential rise to a maximum [27][28][29]. Therefore, the production of methane was assumed to follow Equation (11) and was simulated via non-linear regression analysis by using the 'Solver' function in Microsoft Excel Software, 2007.…”

Section: First-order Kinetic Modelmentioning

confidence: 99%

Thermochemical Pretreatment for Improving the Psychrophilic Anaerobic Digestion of Coffee Husks

Yang,

Flores-Rodriguez,

Torres-Albarracin

et al. 2023

Preprint

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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.

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Prediction of methane yield and pretreatment efficiency of lignocellulosic biomass based on composition

Cited by 18 publications

References 32 publications

Anaerobic Digestion of Cuttings from Grassland in Protected Landscape Areas

Anaerobic Digestion of Cuttings from Grassland in Protected Landscape Areas

Thermochemical Pretreatment for Improving the Psychrophilic Anaerobic Digestion of Coffee Husks

Thermochemical Pretreatment for Improving the Psychrophilic Anaerobic Digestion of Coffee Husks

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