Effect of a new variable integration on steady states of a two-step Anaerobic Digestion Model

Benyahia, Brahim; Sari, Tewfik

doi:10.3934/mbe.2020296

Cited by 3 publications

(3 citation statements)

References 27 publications

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“…where α i ∈ (0, 1], i = 1, 2, is a parameter allowing us to decouple the HRT and the SRT. This decoupling is necessary when considering technology such as systems where biomass is fixed onto supports (as in fixed or fluidized bed reactors) or still retained in the system by membranes such as in MBRs (Membrane Bioreactors); see [54,55]. The model ( 12) is an extension of the AM2 model presented in [25], with α 1 = α 2 , a 1 = a 2 = 0, and kinetics µ 1 and µ 2 of Monod and Haldane types, respectively.…”

Section: Two-step Modelsmentioning

confidence: 99%

Best Operating Conditions for Biogas Production in Some Simple Anaerobic Digestion Models

Sari

2022

Processes

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We consider one-step and two-step simple models of anaerobic digestion that are able to adequately capture the main dynamical behaviour of the full anaerobic digestion model ADM1. We do not consider specific growth functions. We only require them to satisfy certain qualitative assumptions. These assumptions are satisfied for concave growth functions, but they are also satisfied for a large class of growth functions found in many applications. We consider the maximisation of the biogas production with respect to the operating parameters of the model, which are the dilution rate and the substrate input concentration. We give the best operating conditions and we describe them as a subset of the set of operating parameters. Our models incorporate biomass decay terms, corresponding to maintenance. Numerical plots with specified growth functions and biological parameters illustrate the obtained results.

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Section: Two-step Modelsmentioning

confidence: 99%

Best Operating Conditions for Biogas Production in Some Simple Anaerobic Digestion Models

Sari

2022

Processes

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“…Improving energy technology is usually related to simplifying manufacturing processes and processes, the application of advanced technology and manufacturing processes, and technological innovation and innovation. The economic performance of energy mainly refers to the role of economic factors such as economic development level, industrial system, cost level, control level, degree of opening to the outside world and economic system on energy use [7][8].…”

Section: Figure 1comparison Of Energy Output and Ecmentioning

confidence: 99%

Variable Parameter Model to Analyze the Factors of Energy Efficiency Improvement in China

2020

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As an important factor supporting economic development, energy is an important tool for the survival and development of human society. Reducing the source and environmental problems caused by excessive use of energy has become one of the most important problems that people need to solve quickly in the 21st century. Many countries in the world have incorporated energy efficiency(EE) into their strategic decisions. EE has become a major factor in the global system competition in the new era. Based on the variable parameter model(VPM), this paper analyzes the factors that improve China's EE. The energy consumption(EC) in China and the main factors affecting EE are briefly analyzed; This paper puts forward a VPM, combines it with China's EE, analyzes the factors to improve EE, and puts forward suggestions to improve EE.

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“…The AM2 model was mathematically studied in [5,38] and was extended in [4,6], where a fifth state variable (SMP: Soluble Microbial Products), important for fouling of membranes, is included. For a review of mathematical modeling of anaerobic digestion with respect to theory, applications and technologies, the reader is refereed to [50].…”

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A Mathematical Model of Anaerobic Digestion with Syntrophic Relationship, Substrate Inhibition, and Distinct Removal Rates

Fekih-Salem¹,

Daoud²,

Abdellatif³

et al. 2021

SIAM J. Appl. Dyn. Syst.

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Effect of a new variable integration on steady states of a two-step Anaerobic Digestion Model

Cited by 3 publications

References 27 publications

Best Operating Conditions for Biogas Production in Some Simple Anaerobic Digestion Models

Best Operating Conditions for Biogas Production in Some Simple Anaerobic Digestion Models

Variable Parameter Model to Analyze the Factors of Energy Efficiency Improvement in China

A Mathematical Model of Anaerobic Digestion with Syntrophic Relationship, Substrate Inhibition, and Distinct Removal Rates

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