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The effects of moisture inputs on landfill gas production and composition and leachate characteristics at the Vancouver Landfill Site at Burns Bog

2000· article· en· W2034755965 on OpenAlexaboutno aff
Katherine Wreford, J. W. Atwater, L. M. Lavkulich

Bibliographic record

VenueWaste Management & Research The Journal for a Sustainable Circular Economy · 2000
Typearticle
Languageen
FieldEnvironmental Science
TopicLandfill Environmental Impact Studies
Canadian institutionsnot available
Fundersnot available
KeywordsLeachateEnvironmental scienceLandfill gasMoisturePrecipitationMethaneMunicipal solid wasteEnvironmental engineeringInfiltration (HVAC)Hydrology (agriculture)Waste managementChemistryGeologyGeotechnical engineeringEngineering

Abstract

fetched live from OpenAlex

Infiltration of water into a landfill affects the process of waste decomposition. An analysis of variation in landfill gas production and composition (%CH4, %CO2) in response to precipitation variations was carried out at the Vancouver Landfill Site at Burns Bog. Results indicate a direct relationship between cumulative precipitation 14 days prior to sampling and CH4 generation (mean r2 = 0.88). This finding suggests that a time lag is in effect, wherein the moisture acts to enhance CH4 production. The ratio of CH4:CO2 production showed a strong direct relationship to cumulative precipitation 7 days prior to sampling (r2 = 0.85). It is possible that the CO2 acts as an end-product inhibitor during acetate and propionate degradation; therefore, decreased CO2 partial pressures after periods of heavy rainfall would favour enhanced CH4 production.

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 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)0.002
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesScience and technology studies
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Not applicable · Consensus signal: Not applicable
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.297
Threshold uncertainty score0.998

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0020.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0030.001
Scholarly communication0.0000.000
Open science0.0000.001
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 head0.008
GPT teacher head0.240
Teacher spread0.232 · 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 teacher head, not a consensus.

Study designNot applicable
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

Citations22
Published2000
Admission routes1
Has abstractyes

Explore more

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