Technical and economic analysis of hatchery residue valorisation via fermentation and black soldier fly larvae bioconversion in Quebec
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.
Bibliographic record
Abstract
Abstract In response to the challenges associated with conventional management of hatchery residue in Quebec, the technical and economic feasibility of an alternative valorisation system coupling initial fermentation and subsequent black soldier fly larvae bioconversion was evaluated. This study aimed to propose a viable implementation strategy and determine the break-even sales prices of larvae and frass to ensure profitability. A total of 32 production scenarios were compared using an economic prediction tool accounting for geographical and system-specific factors. These scenarios included centralised and decentralised models at scales ranging from 10 to 110 tonnes of residues treated per week (tpw), as well as different reproduction strategies (in-house colony vs external neonate sourcing) and sales approaches (bulk vs retail). Capital and operational costs, along with potential revenues, were estimated for each scenario over 4 years, considering a production start at 30% of design capacity and subsequent ramp-up of 30% per year. Results indicate that a large-scale centralised model with an in-house black soldier fly colony and retail sales is the most profitable one. However, decentralised models could also benefit hatcheries processing at least 15 tpw of residues by reducing fees associated with conventional thermal rendering services. Beyond the economic aspects, challenges related to the supply of skilled labour, social acceptability, regulatory constraints, and market competition for the supply of residues and the marketing of insect products are discussed to ensure the feasibility of implementing the process in Quebec.
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 imitationNot 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.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it