RDKit-checked SAF markers across jet-range hydrocarbons, heteroatoms, aqueous burden, lifecycle signals, and contaminants
Docker-Generated SAF Qualification Gates
SAF Readiness Lab
A 3D qualification workspace that forces pathway mapping, jet-fuel release properties, lifecycle accounting, CORSIA certification logic, and upgrading severity to pass together before sewage-derived aviation-fuel claims are promoted.
pathway, fuel-property, lifecycle, certification, supply, hydrogen, and deployment gates scored for qualification readiness
top current gate because single-point fuel metrics fail without a complete release and certification dossier
selected gates spanning ASTM pathway/specification checks and CORSIA sustainability/lifecycle closure
airport deployment and release package
Airport deployment and release package gate
Bundle pathway, property, lifecycle, and certification evidence into one release dossier before external SAF claims.
Run integrated pre-release review with fuel producer, airline, and regulator-facing package including fallback conditions.
- Sustainability
- 90
- Hydrogen fit
- 70
- Aqueous risk
- 72
- Catalyst
- 68
Pyomo-formulated SAF selector with deterministic enumeration across pathway, property, sustainability, lifecycle, and supply gates. Current package covers 7 categories and 17 SAF markers.
Markers tied to this gate
n-Dodecane; Toluene; Quinoline; Carbon dioxide; Water; PFOA
This set keeps jet-range hydrocarbons, heteroatom stressors, aqueous burden indicators, and lifecycle markers visible so a high-conversion result is not mistaken for SAF qualification.
- Top marker
- n-Dodecane
- Experiments
- D7566 annex qualification mapping workshop; Integrated airport-release dossier rehearsal
SAF readiness depends on coupled closure of deep upgrading, aqueous treatment burden, hydrogen route assumptions, and CORSIA lifecycle accounting.
Current SAF decision
Conversion proof is not SAF qualification proof
The project can show real conversion and upgrading progress while still failing aviation qualification. SAF claims should remain blocked until route-to-annex mapping, property release checks, deep upgrading depth, certification chain, and lifecycle closure are all evidenced together.
7 qualification categories are covered by the selected package.
Jet-range hydrocarbon quality remains paired with heteroatom and lifecycle markers to avoid false readiness narratives.
Route mapping can be strong while still blocked by lifecycle or certification gaps.
Lifecycle strength only matters if product release and pathway qualification pass in the same package.
Selected SAF package
Seven gates that should pass before external SAF claims are promoted
Airport deployment and release package gate
Score 85.2; pathway 88; spec 84; sustainability 90; lifecycle 88. Proof required: Run integrated pre-release review with fuel producer, airline, and regulator-facing package including fallback conditions.
CORSIA default-versus-actual lifecycle accounting gate
Score 74.2; pathway 78; spec 50; sustainability 94; lifecycle 98. Proof required: Release full boundary assumptions, data quality notes, and sensitivity intervals for default and actual lifecycle pathways.
Full hydrotreating and fractionation severity gate
Score 74.1; pathway 88; spec 90; sustainability 52; lifecycle 64. Proof required: Demonstrate staged hydrotreating plus fractionation with quantified nitrogen/sulfur removal and jet-cut quality closure.
CORSIA sustainability certification and chain-of-custody gate
Score 72.9; pathway 76; spec 54; sustainability 96; lifecycle 86. Proof required: Publish chain-of-custody, feedstock classification, and certification-scheme evidence with audit-ready traceability.
ASTM D7566 pathway and annex qualification gate
Score 70.5; pathway 94; spec 78; sustainability 58; lifecycle 60. Proof required: Show explicit pathway mapping, blend limitations, and test plan boundaries for each proposed synthetic blend component.
Feedstock typing and supply-scaling gate
Score 69.1; pathway 72; spec 46; sustainability 86; lifecycle 82. Proof required: Publish feedstock classes, expected volumes, contamination variance windows, and scale assumptions linked to qualification campaigns.
ASTM D1655 Jet A/Jet A-1 release property gate
Score 68.8; pathway 82; spec 96; sustainability 48; lifecycle 54. Proof required: Publish property panel evidence for distillation, density, aromatics, sulfur, freeze-point, smoke-point, and thermal stability boundaries.
Gate ledger
Each gate is scored against pathway maturity, product properties, lifecycle closure, and implementation risk
Airport deployment and release package gate
- Score
- 85.2
- Pathway
- 88
- Spec
- 84
- LCA
- 88
CORSIA default-versus-actual lifecycle accounting gate
- Score
- 74.2
- Pathway
- 78
- Spec
- 50
- LCA
- 98
Full hydrotreating and fractionation severity gate
- Score
- 74.1
- Pathway
- 88
- Spec
- 90
- LCA
- 64
CORSIA sustainability certification and chain-of-custody gate
- Score
- 72.9
- Pathway
- 76
- Spec
- 54
- LCA
- 86
Aqueous phase and hydrogen integration gate
- Score
- 71.7
- Pathway
- 76
- Spec
- 52
- LCA
- 86
ASTM D7566 pathway and annex qualification gate
- Score
- 70.5
- Pathway
- 94
- Spec
- 78
- LCA
- 60
Heteroatom removal and catalyst protection gate
- Score
- 69.9
- Pathway
- 80
- Spec
- 84
- LCA
- 58
Feedstock typing and supply-scaling gate
- Score
- 69.1
- Pathway
- 72
- Spec
- 46
- LCA
- 82
ASTM D1655 Jet A/Jet A-1 release property gate
- Score
- 68.8
- Pathway
- 82
- Spec
- 96
- LCA
- 54
Cold-flow, smoke-point, and combustor envelope gate
- Score
- 60.5
- Pathway
- 74
- Spec
- 88
- LCA
- 46
Category ledger
Pathway, specification, certification, and lifecycle controls are treated as one qualification decision
- Gates
- 1
- Score
- 85.2
- Pathway
- 88
- LCA
- 88
- Gates
- 1
- Score
- 74.2
- Pathway
- 78
- LCA
- 98
- Gates
- 1
- Score
- 74.1
- Pathway
- 88
- LCA
- 64
- Gates
- 1
- Score
- 72.9
- Pathway
- 76
- LCA
- 86
- Gates
- 1
- Score
- 71.7
- Pathway
- 76
- LCA
- 86
- Gates
- 1
- Score
- 70.5
- Pathway
- 94
- LCA
- 60
- Gates
- 1
- Score
- 69.9
- Pathway
- 80
- LCA
- 58
- Gates
- 1
- Score
- 69.1
- Pathway
- 72
- LCA
- 82
- Gates
- 1
- Score
- 68.8
- Pathway
- 82
- LCA
- 54
- Gates
- 1
- Score
- 60.5
- Pathway
- 74
- LCA
- 46
Selected experiment package
The first package links annex mapping, release properties, deep upgrading, certification, and lifecycle closure
D7566 annex qualification mapping workshop
Route-to-annex mapping with pathway assumptions, blend strategy, and unresolved qualification gaps.
Prevents claiming SAF compatibility before the production route is mapped to a valid qualification pathway.
Deep hydrotreating and fractionation severity campaign
Benchmark staged hydrotreating severity with nitrogen/sulfur removal and product-cut targeting.
Separates mild stabilization from true SAF-ready upgrading depth.
Integrated airport-release dossier rehearsal
Combine pathway, property, certification, and lifecycle evidence into one audit-facing release package rehearsal.
Tests whether the organization can defend the full SAF claim package under cross-functional review.
Default-versus-actual lifecycle emissions closure run
Compare default and actual LCA value pathways with sensitivity sweeps on hydrogen and electricity assumptions.
Ensures reported reductions are reproducible and not artifacts of selective boundary assumptions.
Aqueous-treatment plus hydrogen integration coupled run
Link aqueous polishing performance to hydrogen route and lifecycle value in one coupled scenario set.
Shows whether SAF economics and CI claims survive realistic aqueous-phase burdens.
CORSIA sustainability certification readiness review
Assemble chain-of-custody documentation, feedstock classification evidence, and approved-SCS pathway checks.
Prevents lifecycle claims from bypassing certification and traceability requirements.
Jet A/Jet A-1 property release panel
Run distillation, density, sulfur, aromatic envelope, freeze-point, smoke-point, and thermal-stability release package.
Shows whether upgraded blends can be released as jet-fuel-compatible product under minimum property requirements.
Feedstock typing and contamination variance campaign
Classify sludge/co-feed windows with heteroatom and contaminant ranges tied to upgrading burden.
Avoids qualifying SAF on one favorable feed window that cannot hold across municipal variability.
Marker ledger
Markers that keep jet-cut quality, heteroatom burden, aqueous coupling, and lifecycle assumptions visible
n-Dodecane C12H26
- Priority
- 69
- Spec
- 92
- Pathway
- 88
- Risk
- 22
n-Tridecane C13H28
- Priority
- 65.9
- Spec
- 90
- Pathway
- 84
- Risk
- 20
Quinoline C9H7N
- Priority
- 65.1
- Spec
- 42
- Pathway
- 84
- Risk
- 84
Toluene C7H8
- Priority
- 62.7
- Spec
- 76
- Pathway
- 70
- Risk
- 40
Indole C8H7N
- Priority
- 62.5
- Spec
- 40
- Pathway
- 82
- Risk
- 80
Pyridine C5H5N
- Priority
- 62.4
- Spec
- 48
- Pathway
- 78
- Risk
- 70
Dibenzothiophene C12H8S
- Priority
- 61.1
- Spec
- 44
- Pathway
- 74
- Risk
- 82
Naphthalene C10H8
- Priority
- 60.8
- Spec
- 58
- Pathway
- 66
- Risk
- 64
PFOA C8H3F13O2
- Priority
- 60.4
- Spec
- 6
- Pathway
- 58
- Risk
- 92
Phenol C6H6O
- Priority
- 60.2
- Spec
- 46
- Pathway
- 74
- Risk
- 68
Cyclohexane C6H12
- Priority
- 59.4
- Spec
- 78
- Pathway
- 72
- Risk
- 24
Hydrogen H2
- Priority
- 58.6
- Spec
- 26
- Pathway
- 76
- Risk
- 62
Thiophene C4H4S
- Priority
- 58.4
- Spec
- 50
- Pathway
- 68
- Risk
- 72
Decalin C10H18
- Priority
- 57.3
- Spec
- 72
- Pathway
- 64
- Risk
- 36
Carbon dioxide CO2
- Priority
- 54.4
- Spec
- 12
- Pathway
- 52
- Risk
- 36
Ammonia H3N
- Priority
- 53.6
- Spec
- 18
- Pathway
- 70
- Risk
- 64
Acetic acid C2H4O2
- Priority
- 50
- Spec
- 16
- Pathway
- 62
- Risk
- 58
Hydrogen sulfide H2S
- Priority
- 49.2
- Spec
- 14
- Pathway
- 66
- Risk
- 74
Water H2O
- Priority
- 42.9
- Spec
- 10
- Pathway
- 64
- Risk
- 18
Highest SAF marker priorities
Jet-range paraffins, aromatic balance, and heteroatom stress markers lead the qualification watch list
n-Dodecane
core paraffinic jet proxy for synthetic blend component quality. Measurement signal 76; persistence 70; source IDs saf-astm-d7566; saf-astm-d1655.
n-Tridecane
distillation-range and energy-density surrogate for finished jet cut. Measurement signal 72; persistence 68; source IDs saf-astm-d1655; saf-astm-d7566.
Quinoline
deep HDN challenge marker tied to catalyst life and fuel-nitrogen limits. Measurement signal 88; persistence 88; source IDs saf-water-research-2026-htl; saf-jece-2026-mild-hydrotreating.
Toluene
aromatic-envelope marker tied to density, seal compatibility, and smoke behavior. Measurement signal 82; persistence 78; source IDs saf-astm-d1655; saf-astm-d7566.
Indole
persistent nitrogen aromatic used for HDN depth and catalyst-deactivation tracking. Measurement signal 84; persistence 86; source IDs saf-water-research-2026-htl; saf-jece-2026-mild-hydrotreating.
Pyridine
light N-heterocycle marker for two-stage hydrotreating and aqueous recycle impacts. Measurement signal 86; persistence 82; source IDs saf-water-research-2026-htl; saf-rsc-2026-wet-waste-strategies.
Dibenzothiophene
hydrodesulfurization challenge marker for sulfur limits and catalyst demand. Measurement signal 84; persistence 86; source IDs saf-water-research-2026-htl; saf-jece-2026-mild-hydrotreating.
Naphthalene
smoke-point and aromatic-limit stressor in jet release package. Measurement signal 88; persistence 82; source IDs saf-astm-d1655; saf-astm-d7566.
Full experiment ledger
Deferred experiments remain explicit as hold points before any readiness claim
D7566 annex qualification mapping workshop
Urgency 93.2; gate score 77.8. Prevents claiming SAF compatibility before the production route is mapped to a valid qualification pathway.
Deep hydrotreating and fractionation severity campaign
Urgency 92.8; gate score 72. Separates mild stabilization from true SAF-ready upgrading depth.
Integrated airport-release dossier rehearsal
Urgency 92.2; gate score 75.6. Tests whether the organization can defend the full SAF claim package under cross-functional review.
Default-versus-actual lifecycle emissions closure run
Urgency 91.5; gate score 73. Ensures reported reductions are reproducible and not artifacts of selective boundary assumptions.
Aqueous-treatment plus hydrogen integration coupled run
Urgency 89.9; gate score 73. Shows whether SAF economics and CI claims survive realistic aqueous-phase burdens.
CORSIA sustainability certification readiness review
Urgency 89.5; gate score 71. Prevents lifecycle claims from bypassing certification and traceability requirements.
Jet A/Jet A-1 property release panel
Urgency 88.3; gate score 64.7. Shows whether upgraded blends can be released as jet-fuel-compatible product under minimum property requirements.
Feedstock typing and contamination variance campaign
Urgency 87.8; gate score 69.5. Avoids qualifying SAF on one favorable feed window that cannot hold across municipal variability.
saf-astm-d7566
ASTM D7566 aviation turbine fuel containing synthesized hydrocarbons
Current D7566 entry identifies synthetic annex pathways and states D7566-certified fuel is regarded as D1655 fuel after release.
Open sourcesaf-astm-d1655
ASTM D1655 aviation turbine fuels
D1655 defines minimum property requirements for Jet A and Jet A-1 and links fuel quality to distribution assurance procedures.
Open sourcesaf-icao-saf
ICAO Sustainable Aviation Fuels overview
ICAO defines SAF as renewable or waste-derived aviation fuel meeting sustainability criteria and frames SAF as a major international decarbonization lever.
Open sourcesaf-icao-corsia-eligible-fuels
ICAO CORSIA eligible fuels framework
CORSIA eligible fuels require ICAO-approved sustainability certification schemes and maintains current editions of sustainability and LCA methodology documents.
Open sourcesaf-icao-corsia-lifecycle
ICAO SAF lifecycle methodology page
ICAO lifecycle accounting includes core LCA, ILUC, and optional credits with either default or actual values under prescribed methods.
Open sourcesaf-icao-corsia-sustainability
ICAO sustainability of aviation fuels
A42-21 requests States to recognize CORSIA sustainability criteria, certification, and lifecycle methodologies for SAF and LCAF eligibility.
Open sourcesaf-icao-criteria-june-2025
ICAO CORSIA Sustainability Criteria for CORSIA Eligible Fuels (June 2025)
Criterion 1.1 retains the minimum 10% lifecycle GHG reduction threshold and preserves land-use and environmental safeguards for eligibility.
Open sourcesaf-icao-methodology-nov-2025
ICAO CORSIA Methodology for Calculating Actual Life Cycle Emissions Values (November 2025)
Seventh edition details full-supply-chain system boundary, feedstock categories, electricity sourcing, and emissions-credit methods for actual values.
Open sourcesaf-doe-grand-challenge
U.S. DOE SAF Grand Challenge
DOE/DOT/USDA goals include 3 billion gallons by 2030, 35 billion by 2050, and at least 50% lifecycle GHG reduction versus conventional fuel.
Open sourcesaf-doe-framework-2024
SAF Grand Challenge Roadmap Implementation Framework (November 2024)
Framework maps current federal capabilities to roadmap actions and identifies gaps/barriers for scale-up, feedstock, technology, and deployment.
Open sourcesaf-doe-progress-2024
SAF Grand Challenge Progress Report (October 2021 to September 2024)
Progress report reiterates the 2030 and 2050 production and lifecycle targets and tracks implementation metrics across federal programs.
Open sourcesaf-faa-aviation-fuels-2026
FAA technical discipline: Aviation fuels
FAA aviation-fuels discipline emphasizes safety and policy coordination for implementing sustainable aviation fuels in certified operations.
Open sourcesaf-water-research-2026-htl
Hydrothermal liquefaction of municipal sludge: biocrude production and fuel quality upgrading
Water Research review synthesizes municipal-sludge HTL and highlights upgrading, fuel quality, and integration challenges for practical deployment.
Open sourcesaf-energy-2026-htl-tea-lca
TEA and LCA of liquid biofuels from municipal sewage sludge HTL
2026 Energy article reports continuous HTL-plus-upgrading case with 19 g CO2e/MJ and 80% GHG savings relative to fossil diesel assumptions.
Open sourcesaf-rsc-2026-wet-waste-strategies
Wet-waste HTL TEA/LCA with marine, SAF, and renewable-diesel upgrading strategies
RSC Sustainability 2026 indicates marine fuel can use mild hydrotreating while SAF/renewable diesel pathways require full hydrotreating and fractionation.
Open sourcesaf-jece-2026-mild-hydrotreating
Mild hydrotreatment stabilization for nitrogen-rich sewage sludge biocrude (pilot trickle-bed)
Pilot trickle-bed work frames mild hydrotreatment as stabilization, reinforcing that deeper upgrading is still required for high-grade fuel claims.
Open sourcethe SAF plan is not readiness-qualified until pathway, jet-fuel properties, lifecycle accounting, certification chain, and upgrading severity pass together. Modeling basis: ASTM D7566 pathway qualification, ASTM D1655 release properties, and ICAO CORSIA sustainability/lifecycle requirements. Selected package: Airport deployment and release package gate; CORSIA default-versus-actual lifecycle accounting gate; Full hydrotreating and fractionation severity gate; CORSIA sustainability certification and chain-of-custody gate; ASTM D7566 pathway and annex qualification gate; Feedstock typing and supply-scaling gate; ASTM D1655 Jet A/Jet A-1 release property gate.