Computational model and research archive for 'Methanogenic competition controls the effectiveness of hydrogen removal during anaerobic fermentation
This archive contains the computational model, analysis workflow, verification materials, and supporting outputs for the manuscript “Methanogenic competition controls the effectiveness of hydrogen removal during anaerobic fermentation” by Charles N. Haas. The study uses a verified, conservation-tested extension of Anaerobic Digestion Model No. 1 (ADM1) to examine how methanogenic competition affects the response of anaerobic fermentation to an idealized pressure-driven hydrogen-removal boundary. A factorial analysis independently varies methanogenesis and pressure-driven gas removal across hydraulic retention times and pressure-reference settings. The analysis is intended as a controlled mechanistic modeling experiment and hypothesis-generation framework rather than a validated reactor-scale prediction. The research archive provides the materials required to reproduce and audit the computational results reported in the manuscript, including the model implementation, intervention definitions, analysis and figure-generation scripts, simulation outputs, verification and regression tests, conservation checks, parameter provenance, and supporting documentation. The archived version corresponds to the computational record used for the submitted manuscript. The model retains the standard ADM1 framework while adding independently switchable mechanisms used for the study, including methanogenesis suppression, undissociated-acetic-acid inhibition, homoacetogenesis, an idealized pressure-driven gas-removal boundary, and H₂-responsive fermentation-product allocation. The principal manuscript analysis focuses on the factorial interaction between methanogenic competition and pressure-driven H₂ removal. Users should consult the included README and documentation for archive organization, software requirements, reproduction instructions, model assumptions, and limitations.