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Record W4407876544 · doi:10.5539/ijc.v17n1p67

Exploring Electron Conversion Efficiency for Biohydrogen in Dark Fermentation

2025· article· en· W4407876544 on OpenAlexvenueno aff
Pong Kau Yuen, Cheng Man Diana Lau, Karen Yuen

Bibliographic record

VenueInternational Journal of Chemistry · 2025
Typearticle
Languageen
FieldChemical Engineering
TopicAmmonia Synthesis and Nitrogen Reduction
Canadian institutionsnot available
Fundersnot available
KeywordsChemistryBiohydrogenDark fermentationFermentationElectronNanotechnologyHydrogenBiochemistryOrganic chemistryHydrogen productionNuclear physics

Abstract

fetched live from OpenAlex

Buswell’s equation for biohydrogen can represent dark fermentation in accordance with the elemental composition of any organic matter. When the empirical formula or structural formula of an organic matter is identified, the theoretical amount of biohydrogen, theoretical biohydrogen potential, theoretical biohydrogen yield, and theoretical number of transferred electrons can be determined. Currently the metrics that measure the biodegradability performance of organic matters in dark fermentation are biodegradability index and energy conversion efficiency. However, the concept of electron conversion efficiency has not been well investigated. The aims of this article are to develop the electron conversion efficiency for biohydrogen to be a metric and explore the relationships between the biodegradability index and the energy conversion efficiency. The article shows that among the three metrics, electron conversion efficiency and biodegradability index are numerically identical, and there is a strong positive correlation between electron conversion efficiency and energy conversion efficiency. In addition, the established electron conversion efficiency functions as a cross-reference for dark fermentation, dark fermentation coupled photochemical system, and electrochemical system under anaerobic conditions.

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.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.001
Threshold uncertainty score0.003

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0010.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0000.000
Scholarly communication0.0010.001
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0010.000

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 head0.022
GPT teacher head0.275
Teacher spread0.253 · 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

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designBench or experimental
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations0
Published2025
Admission routes1
Has abstractyes

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