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Improvements to the ADM1 based Process Simulation Model: Reaction segregation, parameter estimation and process optimization

Anaerobic digestion is a sustainable organic waste treatment technique with energy recovery via biogas generation. This work presents a novel Aspen Plus ADM1-based flowsheet for this process. Three reactor segments were chosen: stoichiometric for the hydrolysis step, kinetic for acido-aceto-methanog...

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Autor principal: Bechara, Rami
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9712131/
https://www.ncbi.nlm.nih.gov/pubmed/36466570
http://dx.doi.org/10.1016/j.heliyon.2022.e11793
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author Bechara, Rami
author_facet Bechara, Rami
author_sort Bechara, Rami
collection PubMed
description Anaerobic digestion is a sustainable organic waste treatment technique with energy recovery via biogas generation. This work presents a novel Aspen Plus ADM1-based flowsheet for this process. Three reactor segments were chosen: stoichiometric for the hydrolysis step, kinetic for acido-aceto-methanogenesis, and equilibrium for hydrogenotrophic methane production. Selected parameters- conversion ratios, kinetic pre-exponent and inhibitor factors- were controlled to best fit model and experimental results. The parity plot fitting had an R(2) = 0.999, a slope of 1.0058 and an intercept of −0.8651. Obtained parameter values stressed the importance of inhibitions, and simulation results showcased the bell-shaped curve for acetic and volatile fatty acid reduction. The model was used for a subsequent sensitivity analysis as well as an optimization runs, leading to a 50% higher methane production ratio. The proposed model presents itself as a significant contribution for optimal anaerobic digestion process design.
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spelling pubmed-97121312022-12-02 Improvements to the ADM1 based Process Simulation Model: Reaction segregation, parameter estimation and process optimization Bechara, Rami Heliyon Research Article Anaerobic digestion is a sustainable organic waste treatment technique with energy recovery via biogas generation. This work presents a novel Aspen Plus ADM1-based flowsheet for this process. Three reactor segments were chosen: stoichiometric for the hydrolysis step, kinetic for acido-aceto-methanogenesis, and equilibrium for hydrogenotrophic methane production. Selected parameters- conversion ratios, kinetic pre-exponent and inhibitor factors- were controlled to best fit model and experimental results. The parity plot fitting had an R(2) = 0.999, a slope of 1.0058 and an intercept of −0.8651. Obtained parameter values stressed the importance of inhibitions, and simulation results showcased the bell-shaped curve for acetic and volatile fatty acid reduction. The model was used for a subsequent sensitivity analysis as well as an optimization runs, leading to a 50% higher methane production ratio. The proposed model presents itself as a significant contribution for optimal anaerobic digestion process design. Elsevier 2022-11-29 /pmc/articles/PMC9712131/ /pubmed/36466570 http://dx.doi.org/10.1016/j.heliyon.2022.e11793 Text en © 2022 The Author(s) https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Research Article
Bechara, Rami
Improvements to the ADM1 based Process Simulation Model: Reaction segregation, parameter estimation and process optimization
title Improvements to the ADM1 based Process Simulation Model: Reaction segregation, parameter estimation and process optimization
title_full Improvements to the ADM1 based Process Simulation Model: Reaction segregation, parameter estimation and process optimization
title_fullStr Improvements to the ADM1 based Process Simulation Model: Reaction segregation, parameter estimation and process optimization
title_full_unstemmed Improvements to the ADM1 based Process Simulation Model: Reaction segregation, parameter estimation and process optimization
title_short Improvements to the ADM1 based Process Simulation Model: Reaction segregation, parameter estimation and process optimization
title_sort improvements to the adm1 based process simulation model: reaction segregation, parameter estimation and process optimization
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9712131/
https://www.ncbi.nlm.nih.gov/pubmed/36466570
http://dx.doi.org/10.1016/j.heliyon.2022.e11793
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