The role of dry anaerobic digestion in the treatment of the organic fraction of municipal solid waste: A systematic review

Franca, Luíza Santana; Bassin, João Paulo

doi:10.1016/j.biombioe.2020.105866

Cited by 26 publications

(5 citation statements)

References 57 publications

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“…In wet processes, the solid waste must be conditioned to the appropriate solids concentration by adding process water either by re-circulation of the liquid effluent fraction or by digestion with more liquid waste. The latter is a desirable method for combining various waste streams such as sewage sludge or manure and the organic fraction of municipal solid waste [31]. The reactors used in wet AD processes are generally called continuous stirred tank reactors (CSTR), applying mechanical mixers or a combination of automatic mixing and biogas injection [32].…”

Section: Mathematical Model An Statement Problemmentioning

confidence: 99%

State Estimation in a Biodigester via Nonlinear Logistic Observer: Theoretical and Simulation Approach

et al. 2023

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The state variables in a biodigester are predicted using an unstructured model, and this study offers an analytical design of a Non-Linear Logistic Observer (NLLO), subsequently comparing its performance to that of other prominent state estimators. Because of variables such as temperature, pH, high pressure, volumetric organic load (VOC), and hydraulic retention time (HRT), among others, biodigester samples can be affected by the use of physical sensors, which are not always practical owing to their sensitivity to the type of sampling and external disturbances. The use of virtual sensors represents one approach to solving this issue. In this work, we suggest experimentally validating a mathematical model, then analytically designing a novel NLLO observer, and finally comparing the results to those obtained using a sliding-mode estimator and a Luenberger observer. By including online CH4 and CO2 measurements as inputs to the proposed observer, the local observability analysis demonstrated that all state variables were recoverable. After showing how well the suggested observer performs in numerical experiments, a proof based on the Lyapunov theory is offered. The primary innovation of this study is the incorporation of a novel algorithm that has been empirically validated and has output resilience to input parametric perturbations.

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Section: Mathematical Model An Statement Problemmentioning

confidence: 99%

State Estimation in a Biodigester via Nonlinear Logistic Observer: Theoretical and Simulation Approach

et al. 2023

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“…The presence of undesirable materials in AD biodigester can lead to operational complications, ultimately leading to reactor breakdown. Waste segregation, therefore, seems to be the plausible first step forward in addressing the issue (Franca and Bassin, 2020). Segregation of FW from municipal solid garbage is uncommon in many countries.…”

Section: Opportunities and Prospectsmentioning

confidence: 99%

“…Segregation of FW from municipal solid garbage is uncommon in many countries. Adequate segregation strategies, thus, need to be taken since these will aid in better management of municipal solid waste with value-addition options (Franca and Bassin, 2020).…”

Section: Opportunities and Prospectsmentioning

confidence: 99%

Food Waste Valorisation for Biogas-Based Bioenergy Production in Circular Bioeconomy: Opportunities, Challenges, and Future Developments

et al. 2022

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The fossil fuel-based linear economy has inherent intricacies such as environmental pollution and the continued need for energy sourcing. Consequently, there has been a shift to a more sustainable circular bio-economy, in which biomass waste is valorised for energy generation while reducing the bulk waste materials and greenhouse gas emissions. In modern bioeconomy, biogas is a primary energy production vehicle. Bio-based economy-enabled technologies result in heat and electricity generation, considerable substitution of fossil fuels for transport, and also the manufacture of additional value-added products and byproducts of economic benefits. Wastes from industrial operations, agriculture, and other anthropogenic activities such as food waste (FW) can be biodigested and transformed into valuable energy sources, nutrient-rich manure, and speciality chemicals. However, for instance, although closed anaerobic membrane bioreactors can totally avoid a microbial runoff, membrane fouling frequently affects the hydraulic performance. Recent developments in anaerobic digestion (AD) of FW have diversified into pretreatment, organic loading, additive supplementation, parametric optimisation, and digestate recirculation to enhance the utility potential of biomass for energy and environment. These numerous anaerobic and microbial interventions support biomass valorisation and related processes, resulting in more efficient biomethanation. Valorisation of FW through biogas-based energy production could serve as an essential cog in the wheel of a circular bioeconomy.

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“…Anaerobic digestion for biogas production takes place in a sealed reactor. In the reactor, complex microbial communities break down (or digest) the waste (organic matter) and produce biogas and resultant digestate (the solid and liquid material endproducts of the anaerobic digestion process), which is discharged from the digester (Franca and Bassin, 2020). Usually, multiple organic materials are combined in one digester to increase biogas production (co-digestion).…”

Section: Technological and Technical Description Of The Biogas Plantmentioning

confidence: 99%

Toward the circular economy into the olive oil supply chain: A case study analysis of a vertically integrated firm

Stempfle

Roselli

Carlucci

et al. 2022

Front. Sustain. Food Syst.

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While the paradigm of circular economy (CE) and the processes of socio-technical transition have been broadly investigated at the theoretical level, understanding how the transition toward circular models can be implemented in practice is still limited. This contribution aims to provide in-depth and evidence-based insights on an emerging pathway for the operability of CE into the olive oil supply chain. A case study from the Apulia region (the leading olive oil producing area in Italy) is presented to show how an existing business model can be transformed into a circular one, and to what extent it can be replicated. The study focuses on a vertically integrated firm, in which a new industrial process has been introduced to manage olive pomace, which is one of the most important by-products obtained from olive oil extraction. The empirical analysis is built on the Circular Business Model Canvas (CBMC), which is conceived as a suitable theoretical and methodological tool to speed up the transition process toward CE at a micro-economic level. This analytical framework allows us to identify the interplaying elements that the firm combines to capture, create, and deliver value, as well as the relationships with the broader economic system. Particular attention is paid to two distinctive components of CBMC: material loops and adoption factors. Also, internal and external factors affecting the adoption of the new circular business model have been discussed by separating drivers and barriers of the transition process.

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The role of dry anaerobic digestion in the treatment of the organic fraction of municipal solid waste: A systematic review

Cited by 26 publications

References 57 publications

State Estimation in a Biodigester via Nonlinear Logistic Observer: Theoretical and Simulation Approach

State Estimation in a Biodigester via Nonlinear Logistic Observer: Theoretical and Simulation Approach

Food Waste Valorisation for Biogas-Based Bioenergy Production in Circular Bioeconomy: Opportunities, Challenges, and Future Developments

Toward the circular economy into the olive oil supply chain: A case study analysis of a vertically integrated firm

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