Integrated Cycles for Urban Biomass as a Strategy to Promote a CO2-Neutral Society—A Feasibility Study

Meinusch, Nicole; Krämer, Susanne; Körner, Oliver; Wiese, Jürgen; Seick, Ingolf; Beblek, Anita; Berges, Regine; Illenberger, Bernhard; Illenberger, Marco; Uebbing, Jennifer; Wolf, Maximilian; Saake, Gunter; Benndorf, Dirk; Reichl, Udo; Heyer, Robert

doi:10.3390/su13179505

Cited by 3 publications

(1 citation statement)

References 70 publications

(82 reference statements)

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“…Biomass is nowadays deemed an energy source with utmost importance from the point of view of energy transition towards sustainable energy supply [24][25][26][27]. Worldwide production of BSG has been estimated as approximately 38.6 million tons [28].…”

Section: Introductionmentioning

confidence: 99%

Synergetic Co-Production of Beer Colouring Agent and Solid Fuel from Brewers’ Spent Grain in the Circular Economy Perspective

Jackowski¹,

Niedźwiecki²,

Mościcki³

et al. 2021

Sustainability

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Brewers’ Spent Grain is a by-product of the brewing process, with potential applications for energy purposes. This paper presents the results of an investigation aiming at valorization of this residue by torrefaction, making product for two purposes: a solid fuel that could be used for generation of heat for the brewery and a colouring agent that could replace colouring malt for the production of dark beers. Decreased consumption of malt for such purposes would have a positive influence on the sustainability of brewing. Torrefaction was performed at temperatures ranging between 180 °C and 300 °C, with a residence time between 20 and 60 min. For the most severe torrefaction conditions (300 °C, 60 min), the higher heating value of torrefied BSG reached 25 MJ/kg. However, the best beer colouring properties were achieved for mild torrefaction conditions, i.e., 180 °C for 60 min and 210 °C for 40 min, reaching European Brewery Convention colours of 145 and 159, respectively. From the solid fuel properties perspective, the improvements offered by torrefaction in such mild conditions were modest. Overall, the obtained results suggest some trade-off between the optimum colouring properties and optimum solid fuel properties that need to be considered when such dual-purpose torrefaction of BSG for brewery purposes is implemented.

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Section: Introductionmentioning

confidence: 99%

Synergetic Co-Production of Beer Colouring Agent and Solid Fuel from Brewers’ Spent Grain in the Circular Economy Perspective

Jackowski¹,

Niedźwiecki²,

Mościcki³

et al. 2021

Sustainability

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CO2 nanobubbles utility for enhanced plant growth and productivity: Recent advances in agriculture

Pal¹,

Anantharaman²

2022

Journal of CO2 Utilization

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Creating microbiome-model harmony between metaproteomics data and the ADM1da for a two-step anaerobic digester

Hellwig,

Seick,

Meinusch

et al. 2024

Preprint

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The effective operation, planning, and optimization of renewable energy production in anaerobic digestion (AD) plants relies on advanced process models, such as the Anaerobic Digestion Model No. 1 (ADM1). This study applies an ADM1-based model (ADM1da) to simulate a two-step digester in an industrial setting. The data demonstrate that 2.6% of the methane is lost as a result of open hydrolysis. Conversely, the incorporation of a hydrolysis fermenter enhances methane production by an average of 2.5%. Although ADM1-like models are widely recognized for accurately representing anaerobic digestion processes, mechanistic insights into the microbiome involved have been limited by the absence of tools to analyze microbial composition and functionality at the time these models were developed.To overcome this limitation, we utilized a metaproteomics approach to assess the abundance and biomass-correlated activity of microbial groups as defined by the model, aiming to bridge the gap between microbial ecology and bioprocess engineering in AD systems. We also developed and evaluated a series of rules for associating particular microbial species with functional groups of the model.Our analysis demonstrates that while the model supports the presence of a stable microbiome composition in the main fermenter, it is difficult to capture the dynamic behavior observed in the hydrolysis fermenter. Furthermore, the actual AD microbiome displays a greater versatility than the model assumes, with microorganisms performing multiple functions rather than being restricted to single roles.In conclusion, this study identifies options for improving AD models and integrating comprehensive biological knowledge to further optimize the performance of anaerobic digesters.HighlightsSimulations revealed 2.6 % methane volume loss attributed to open hydrolysisImplementation of a two-step process increased methane production by 2.5%Identification of rules to map metaproteomics data to ADM1daSimulations of ADM1da depict the dynamic in the main but not in the hydrolysis fermenterMicrobial species perform multiple functions not just one as assumed in the ADM1da

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Integrated Cycles for Urban Biomass as a Strategy to Promote a CO2-Neutral Society—A Feasibility Study

Cited by 3 publications

References 70 publications

Synergetic Co-Production of Beer Colouring Agent and Solid Fuel from Brewers’ Spent Grain in the Circular Economy Perspective

Synergetic Co-Production of Beer Colouring Agent and Solid Fuel from Brewers’ Spent Grain in the Circular Economy Perspective

CO2 nanobubbles utility for enhanced plant growth and productivity: Recent advances in agriculture

Creating microbiome-model harmony between metaproteomics data and the ADM1da for a two-step anaerobic digester

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