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Record W7117422634 · doi:10.53063/synsint.2025.54316

Energy recovery wastewater treatment plants through anaerobic digestion

2025· article· W7117422634 on OpenAlex
Hamidreza Shiran, Gholamreza Nabi Bidhendi, Naser Mehrdadi, Amirhossein Choopani

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

venuePublished in a venue whose home country is Canada.
no affNo Canadian affiliation: this work is invisible to an affiliation-only frame.
No Canadian affiliation. An affiliation-only frame, the usual design, would never have seen this work. It is one of the works that make the case for inverting the frame.

Bibliographic record

VenueSynthesis and Sintering · 2025
Typearticle
Language
FieldEngineering
TopicAnaerobic Digestion and Biogas Production
Canadian institutionsnot available
Fundersnot available
KeywordsAnaerobic digestionIdentifiabilityRaw materialBiogasHydrolysisWastewaterSewage treatmentEnergy recoveryWaste treatmentAnaerobic exercise

Abstract

fetched live from OpenAlex

Anaerobic co-digestion (AcoD) helps improve the treatment of organic waste and the recovery of energy in wastewater treatment plants. The current work describes a complete assessment of the various kinetic modeling techniques and the effects of different feedstock compositions on the performance of AcoD based on extensive datasets and sophisticated computational modeling. Eighteen different biomethane potential (BMP) datasets were used to determine several key kinetic parameters, including first-order hydrolysis coefficients (khyd, d-1; 0.08–0.70). The first-order kinetic model was shown to have overwhelmingly better predictive ability (R² > 0.95) and parameter identifiability with respect to the Monod-type models. The incorporation of the modified GISCOD framework with the inhibition function for long-chain fatty acids (LCFA) provided tools for highly accurate simulation of co-digestion dynamics and operational cost reduction of 10.2%. However, feedstock with protein content over 2.5 wt% resulted in significant ammonia inhibition (p-value<0.01) and a reduction of 18–22% of methanogenic activity. Multivariate sensitivity analysis showed protein and lipid fractions to be the predominant controls for process stability and methane yield. Quantitative descriptions were able to clarify the results.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Other design · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.882
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.013
GPT teacher head0.216
Teacher spread0.203 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it