Study of physical mechanisms and their influence on dry anaerobic digestion kinetics : experimentations and modelisation
type: Dataset
description: Anaerobic digestion is a biological process that converts organic matter into a methane rich gas (biogas). Among industrial technologies, dry processes (above 15 % total solid content) are more and more used because of their advantages in comparison with conventional wet processes. However, dry anaerobic digestion processes are poorly known and studied because of the “pasty” nature of digestion media (rheological behavior, equilibria, transfers, biological kinetics). This thesis focuses on two major aspects: i) the nature of the chemical equilibria (sorption, diffusion) involved in digestion media, ii) the establishment and application of a kinetic model adapted to dry media. We first demonstrated that the diffusional mass transfer is highly reduced with increasing total solid without any agitation. One of the consequences is the importance of the liquid-gas transfer for the production of biogas. Then, we have developed a dedicated kinetic model that enables to understand the variability of the kinetic with total solid content. The impacts of this work are both at the laboratory scale, especially for the operation of Specific Methanogenic Activity tests, and at industrial scale, with the need to control total solid content for optimal efficiency, and to adapt the agitation to improve degradation yields. The developed model can be useful for the design and operation of biomethanization facilities.
landing page: https://theses.hal.science/tel-00770658
identifier: NNT: 2012ISAL0011
keyword: biogaz
keyword: cinetique-microbienne
keyword: dechet
keyword: digestate
keyword: digestion-anaerobie
keyword: infoeu-reposemanticsdoctoralthesis
keyword: methanisation
keyword: methanogenic-activity
keyword: modelisation
keyword: solid-waste
keyword: spiotherengineering-sciences-physicsother
keyword: theses
keyword: traitement-des-dechets
keyword: transferts-de-matiere
keyword: voie-seche
issued: 2026-05-15T13:13:46.816377
modified: 2026-05-15T13:13:46.816383
language: fr
contact point: Organization
  fn: CCSD

test_moissonnage_selune
type: Agent

Study of physical mechanisms and their influence on dry anaerobic digestion kinetics : experimentations and modelisation
type: Distribution
format: HTML
access URL: https://theses.hal.science/tel-00770658
issued: 2026-05-15T13:13:46.881846
modified: 2026-05-15T13:13:46.788377