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Record W2163279367 · doi:10.1139/t05-054

Consolidation properties of a dewatered municipal sewage sludge

2005· article· en· W2163279367 on OpenAlex
Brendan C. O’Kelly

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

VenueCanadian Geotechnical Journal · 2005
Typearticle
Languageen
FieldEnvironmental Science
TopicLandfill Environmental Impact Studies
Canadian institutionsnot available
FundersUniversity College Dublin
KeywordsOedometer testConsolidation (business)SlurryGeotechnical engineeringCompressibilityMaterials scienceSewage sludgePermeability (electromagnetism)Composite materialEnvironmental scienceChemistrySewageSoil waterEnvironmental engineeringGeologySoil scienceEngineering

Abstract

fetched live from OpenAlex

The consolidation properties of a dewatered municipal sewage sludge were studied using the oedometer, hydraulic consolidation cell, and triaxial apparatus. Bioactive and stabilized test specimens of dried-compacted material and slurry material at different states of biodegradation (LOI = 55–70%, where LOI is the loss on ignition) were consolidated under applied stresses of 3–400 kPa. The rate of biogas production and the resulting pore pressure response of the unsaturated material were also studied for different specimen drainage conditions. The sludge material largely consisted of organic clay-sized particles, and although highly compressible, the material was practically impermeable (k = 10 –9 –10 –11 m/s for slurry material, where k is the coefficient of permeability). Primary consolidation generally constituted only a small part of the overall deformation response for moderately degraded material (LOI [Formula: see text] 70%). Secondary compression was dominant, and for the bioactive material, included a significant contribution as a result of ongoing degradation of the organic solids. The contribution of primary consolidation to the overall deformation response increased for higher levels of treatment (LOI [Formula: see text] 55%) and the coefficient of secondary compression (C sec ) values reduced; for example, C sec = 0.10–0.24 (σ a = 35–150 kPa, where σ a is the applied stress) for moderately degraded material and C sec [Formula: see text] 0.09 (σ a = 300 kPa) for strongly degraded material. Biogas evolved from the material at a steady rate of up to 0.33 m 3 gas/day/tonne for moderately degraded slurry, which caused the pore pressure to steadily increase to up to 40 kPa/day when the biogas remained trapped within the specimens.Key words: sewage sludge, consolidation, biodegrade, biogas.

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 categoriesInsufficient payload (model declined to judge)
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 score0.351
Threshold uncertainty score0.999

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)0.0020.000

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 head0.021
GPT teacher head0.218
Teacher spread0.197 · 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