Biopython-checked pathogen, ARG, mobile-element, virus, ova, spore, and biofilm-carrier assay targets
Docker-Generated Biosecurity Gates
Biosecurity Gate Lab
A 3D biological-safety workspace for checking viable pathogens, indicator organisms, ARGs, mobile genetic elements, aqueous regrowth, hydrochar leachate, and SCWO fallback evidence before sewage-derived fuel or residual claims are promoted.
biological-safety gates ranked across viability proof, ARG/MGE coverage, regrowth risk, residual safety, and severity
top fallback gate because some sludge windows may need destruction rather than product, residual, or return-water routing
selected viability, HTL endpoint, ARG/MGE, aqueous, residual, and SCWO fallback gates for the first proof package
destruction fallback
SCWO biohazard destruction fallback
Keep SCWO as a fallback for feed weeks or residuals that fail pathogen, ARG/MGE, PFAS, or toxicity gates.
High-severity fallback run with viable organisms, ARG/MGE DNA, PFAS/TOF, effluent toxicity, salts, corrosion, and energy recovery closure.
- Temperature
- 560 C
- Hold
- 5 min
- Regrowth
- 96
- Residual
- 92
Pyomo-formulated biological-safety selector with deterministic enumeration across viability, targeted ARG/MGE, hydrothermal endpoint, aqueous regrowth, residual release, and non-target/fallback constraints. Current package covers 6 gate categories and 16 biological targets.
Biological targets tied to this gate
Salmonella invA; Adenovirus hexon; Viable helminth ova ITS proxy; Spore-former 16S proxy; sul1 sulfonamide resistance; intI1 class 1 integron
Biopython computes GC, melting temperature, and reverse-complement checks for representative pathogen, ARG, MGE, and biofilm-carrier target sequences so the assay plan is tied to measurable biology.
- Top target
- intI1 class 1 integron
- Experiments
- SCWO biohazard destruction fallback run
The selected package requires viable-organism indicators, ARG/MGE qPCR or ddPCR, HTL phase splitting, aqueous regrowth, hydrochar leachate, and SCWO fallback evidence before a biological-safety claim is promoted.
Aqueous return and residual release stay in the first package because surviving DNA, biofilm carriers, or regrowth can move biological risk back into the wastewater plant or land route even when oil chemistry looks clean.
intI1, sul1, blaTEM, mcr-1, tetM, enteric virus proxies, Salmonella, E. coli, helminth ova, spores, and microplastic biofilm markers keep the proof package broader than a single fecal-indicator result.
DNA persistence is not treated as viable survival, and viable survival is not treated as ARG removal; the page keeps both questions visible.
Current biological-safety decision
Hot conversion is not the same as biological release proof
HTL severity likely destroys viable organisms, but the fuel plan still needs measured biological proof: culture or indicator assays, viability-PCR, ARG/MGE qPCR or ddPCR, metagenomic follow-up, hydrochar leachate, aqueous regrowth, and a destruction fallback for cases that fail product, residual, or WRRF-return gates.
6 biological-safety categories are covered by the selected Docker-generated package.
Mobile elements lead the target list because ARG transfer risk is not answered by viable-organism indicators alone.
Persistent DNA and cell-free ARGs stay visible even when viability indicators fall below release limits.
High-severity fallback destruction is retained for sludge windows that fail biological or contaminant gates.
Selected biosecurity package
Six gates that must pass before biological safety can be claimed
SCWO biohazard destruction fallback
Score 100.4; estimated log reduction 12.18; viability 78; ARG/MGE 88; residual safety 92. Proof required: High-severity fallback run with viable organisms, ARG/MGE DNA, PFAS/TOF, effluent toxicity, salts, corrosion, and energy recovery closure.
HTL endpoint inactivation and phase split gate
Score 99.1; estimated log reduction 10.77; viability 84; ARG/MGE 78; residual safety 86. Proof required: Spiked and native sludge HTL run with culture, viability-PCR, ARG qPCR, phase partitioning, and extraction-inhibition controls.
Hydrochar leachate and residual biosecurity gate
Score 86.7; estimated log reduction 3.14; viability 84; ARG/MGE 90; residual safety 94. Proof required: Hydrochar leachate, storage, germination/viability, ARG/MGE qPCR, ecotoxicity, and microplastic-biofilm carrier checks.
ARG and MGE qPCR/ddPCR fate gate
Score 83.6; estimated log reduction 1.8; viability 84; ARG/MGE 98; residual safety 84. Proof required: Absolute copies per g TS and per mL for blaTEM, sul1, tetM, ermB, qnrS, mcr-1, intI1, and ISCR1 in feed, aqueous, char, product, and blanks.
HTL aqueous return regrowth and nitrification bioassay
Score 80.7; estimated log reduction 4.11; viability 78; ARG/MGE 82; residual safety 74. Proof required: Seven-day regrowth, nitrification inhibition, ATP/culture, qPCR/ddPCR, extracellular DNA, and biofilm-carrier assay on polished HTL aqueous phase.
Viability-PCR plus culture indicator gate
Score 79.5; estimated log reduction 3.33; viability 96; ARG/MGE 40; residual safety 78. Proof required: Fecal coliform/E. coli, Salmonella, enteric virus, viable helminth ova, and PMA-qPCR/ddPCR checks across feed, oil, aqueous, char, condensate, and residuals.
Gate ledger
Every gate is scored against viable-organism proof, ARG/MGE coverage, residual safety, and regrowth risk
SCWO biohazard destruction fallback
- Score
- 100.4
- Viable
- 78
- ARG/MGE
- 88
- Log red.
- 12.18
HTL endpoint inactivation and phase split gate
- Score
- 99.1
- Viable
- 84
- ARG/MGE
- 78
- Log red.
- 10.77
Thermal hydrolysis plus AD Class A comparator
- Score
- 93.3
- Viable
- 82
- ARG/MGE
- 76
- Log red.
- 6.96
Hydrochar leachate and residual biosecurity gate
- Score
- 86.7
- Viable
- 84
- ARG/MGE
- 90
- Log red.
- 3.14
ARG and MGE qPCR/ddPCR fate gate
- Score
- 83.6
- Viable
- 84
- ARG/MGE
- 98
- Log red.
- 1.8
HTL aqueous return regrowth and nitrification bioassay
- Score
- 80.7
- Viable
- 78
- ARG/MGE
- 82
- Log red.
- 4.11
Microplastic biofilm carrier gate
- Score
- 80.1
- Viable
- 76
- ARG/MGE
- 88
- Log red.
- 3.21
Viability-PCR plus culture indicator gate
- Score
- 79.5
- Viable
- 96
- ARG/MGE
- 40
- Log red.
- 3.33
Metagenomic resistome and host-mapping gate
- Score
- 76.1
- Viable
- 70
- ARG/MGE
- 96
- Log red.
- 1.8
Category ledger
The package separates viable pathogens, resistance genes, residuals, aqueous regrowth, and fallback destruction
- Gates
- 1
- Score
- 100.4
- ARG/MGE
- 88
- Log red.
- 12.18
- Gates
- 1
- Score
- 99.1
- ARG/MGE
- 78
- Log red.
- 10.77
- Gates
- 1
- Score
- 93.3
- ARG/MGE
- 76
- Log red.
- 6.96
- Gates
- 1
- Score
- 86.7
- ARG/MGE
- 90
- Log red.
- 3.14
- Gates
- 1
- Score
- 83.6
- ARG/MGE
- 98
- Log red.
- 1.8
- Gates
- 1
- Score
- 80.7
- ARG/MGE
- 82
- Log red.
- 4.11
- Gates
- 1
- Score
- 80.1
- ARG/MGE
- 88
- Log red.
- 3.21
- Gates
- 1
- Score
- 79.5
- ARG/MGE
- 40
- Log red.
- 3.33
- Gates
- 1
- Score
- 76.1
- ARG/MGE
- 96
- Log red.
- 1.8
Selected experiment package
The first package tests viable organisms, ARGs, HTL phase split, water return, residuals, and SCWO fallback
Spiked HTL biological endpoint and phase split
native and spiked sludge HTL with oil/water/char/condensate biological target closure and extraction controls
Tests the actual sewage-to-oil reactor rather than inferring from temperature alone.
Culture and viability-PCR release panel
culture/MPN, enteric virus/helminth indicators, PMA/EMA qPCR or ddPCR, extraction inhibition controls, and blanks
Separates viable organism survival from DNA persistence.
ARG/MGE qPCR and ddPCR fate panel
absolute copies for blaTEM, sul1, tetM, ermB, qnrS, mcr-1, intI1, ISCR1, 16S normalization, and extracellular DNA split
Shows whether treatment reduces resistance genes and mobile elements across phases.
SCWO biohazard destruction fallback run
SCWO run with viable targets, ARG/MGE DNA, PFAS/TOF, effluent toxicity, salts, corrosion, and energy recovery
Defines a fallback for feed or residual cases that should not enter product or reuse streams.
Hydrochar leachate and storage biosecurity run
leachate, storage, dust/fines, viability-PCR, ARG/MGE qPCR, microplastic fraction, and ecotoxicity
Tests whether residual reuse creates a biological exposure route.
Aqueous return regrowth and nitrification run
7-14 day regrowth, ATP/culture, nitrification inhibition, qPCR/ddPCR, extracellular DNA, and biofilm carrier assay
Prevents returning biologically active or ARG-rich HTL water to the plant.
Biological target ledger
Targets that make ARG transfer, viable indicators, viruses, ova, spores, and biofilm carriers visible
intI1 class 1 integron 99 bp / GC 53.5%
- Priority
- 91
- Viable
- 68
- DNA
- 98
- Tm
- 78.3 C
sul1 sulfonamide resistance 67 bp / GC 61.2%
- Priority
- 88.8
- Viable
- 70
- DNA
- 96
- Tm
- 79 C
blaTEM beta-lactamase 106 bp / GC 43.4%
- Priority
- 86.6
- Viable
- 72
- DNA
- 94
- Tm
- 75.2 C
mcr-1 colistin resistance 65 bp / GC 53.8%
- Priority
- 86.1
- Viable
- 70
- DNA
- 92
- Tm
- 75.7 C
ISCR1 mobile element 66 bp / GC 56.1%
- Priority
- 83
- Viable
- 58
- DNA
- 92
- Tm
- 76.7 C
tetM tetracycline resistance 64 bp / GC 53.1%
- Priority
- 82.3
- Viable
- 66
- DNA
- 90
- Tm
- 75.1 C
Microplastic biofilm 16S proxy 69 bp / GC 60.9%
- Priority
- 81.4
- Viable
- 82
- DNA
- 78
- Tm
- 79.5 C
ermB macrolide resistance 68 bp / GC 39.7%
- Priority
- 80.3
- Viable
- 64
- DNA
- 88
- Tm
- 69.3 C
qnrS quinolone resistance 66 bp / GC 48.5%
- Priority
- 78.2
- Viable
- 62
- DNA
- 86
- Tm
- 74.1 C
Salmonella invA 69 bp / GC 49.3%
- Priority
- 68.8
- Viable
- 94
- DNA
- 58
- Tm
- 74.5 C
Spore-former 16S proxy 66 bp / GC 57.6%
- Priority
- 67.2
- Viable
- 80
- DNA
- 68
- Tm
- 77.1 C
Viable helminth ova ITS proxy 65 bp / GC 55.4%
- Priority
- 67
- Viable
- 92
- DNA
- 70
- Tm
- 75.9 C
Enterococcus ddl 66 bp / GC 48.5%
- Priority
- 66
- Viable
- 86
- DNA
- 58
- Tm
- 74.2 C
Adenovirus hexon 67 bp / GC 58.2%
- Priority
- 65.8
- Viable
- 80
- DNA
- 82
- Tm
- 76.9 C
E. coli uidA 68 bp / GC 57.4%
- Priority
- 64.3
- Viable
- 86
- DNA
- 54
- Tm
- 77.7 C
Norovirus GII RNA proxy 67 bp / GC 43.3%
- Priority
- 61.6
- Viable
- 78
- DNA
- 76
- Tm
- 70.4 C
Highest biological priorities
intI1, sul1, blaTEM, mcr-1, ISCR1, tetM, biofilm carriers, and ermB lead the first ARG/MGE watch list
intI1 class 1 integron
Type mobile genetic element; DNA persistence 98; horizontal-transfer signal 100; reverse complement start GTTACCACCGCTGCGTTC; source IDs bio-full-scale-ad-2024; bio-cdc-water-resistance.
sul1 sulfonamide resistance
Type ARG; DNA persistence 96; horizontal-transfer signal 94; reverse complement start CTTCAGCAGCAGCAGACG; source IDs bio-arg-review-2023; bio-full-scale-ad-2024.
blaTEM beta-lactamase
Type ARG; DNA persistence 94; horizontal-transfer signal 88; reverse complement start CTTCAGCATCTTTTACTT; source IDs bio-arg-review-2023; bio-cdc-amr-environment.
mcr-1 colistin resistance
Type ARG; DNA persistence 92; horizontal-transfer signal 92; reverse complement start CGGCATCAGCAGCAACAC; source IDs bio-cdc-amr-environment; bio-arg-review-2023.
ISCR1 mobile element
Type mobile genetic element; DNA persistence 92; horizontal-transfer signal 94; reverse complement start CGTCAACAGCATCAGCAT; source IDs bio-full-scale-ad-2024; bio-arg-review-2023.
tetM tetracycline resistance
Type ARG; DNA persistence 90; horizontal-transfer signal 84; reverse complement start CAGCATCAACAGCATCGT; source IDs bio-arg-review-2023; bio-thermal-alkaline-2026.
Microplastic biofilm 16S proxy
Type biofilm carrier; DNA persistence 78; horizontal-transfer signal 86; reverse complement start CACGCGGCGTCGCTGCAT; source IDs bio-mp-arg-2026; bio-cdc-water-resistance.
ermB macrolide resistance
Type ARG; DNA persistence 88; horizontal-transfer signal 82; reverse complement start GCCAGTTTCGTCGTTAAA; source IDs bio-arg-review-2023; bio-full-scale-ad-2024.
Full experiment ledger
Metagenomic and THP/AD comparator work remains visible after the first release package
Spiked HTL biological endpoint and phase split
Urgency 104.3; gate score 99.1. Tests the actual sewage-to-oil reactor rather than inferring from temperature alone.
Culture and viability-PCR release panel
Urgency 103.7; gate score 90.6. Separates viable organism survival from DNA persistence.
ARG/MGE qPCR and ddPCR fate panel
Urgency 102.2; gate score 89.8. Shows whether treatment reduces resistance genes and mobile elements across phases.
SCWO biohazard destruction fallback run
Urgency 100.6; gate score 100.4. Defines a fallback for feed or residual cases that should not enter product or reuse streams.
Hydrochar leachate and storage biosecurity run
Urgency 95.4; gate score 86.7. Tests whether residual reuse creates a biological exposure route.
Aqueous return regrowth and nitrification run
Urgency 93.6; gate score 80.4. Prevents returning biologically active or ARG-rich HTL water to the plant.
Thermal hydrolysis plus AD comparator run
Urgency 87.2; gate score 93.3. Keeps HTL honest against a mature sludge-stabilization pathway.
Metagenomic resistome host map
Urgency 85.6; gate score 78.1. Catches resistance determinants that targeted qPCR panels can miss.
bio-epa-pec-2026
EPA Pathogen Equivalency Committee and Part 503 pathogen alternatives
EPA source explaining Class A/B pathogen alternatives and why absence of one organism does not infer absence of other pathogen classes.
Open sourcebio-ecfr-503-32
40 CFR 503.32 pathogen requirements for sewage sludge
Regulatory source for fecal coliform, Salmonella, enteric virus, and viable helminth ova pathogen-reduction requirements.
Open sourcebio-epa-methods-2026
EPA sewage sludge analytical methods and sampling procedures
EPA methods source for fecal coliform, Salmonella, helminth ova, and sewage sludge sampling procedure context.
Open sourcebio-arg-review-2023
Performance of sewage-sludge treatment for antibiotic resistance gene removal
ARG review source supporting direct resistance-gene measurement instead of inferring safety from general sludge treatment.
Open sourcebio-hydrothermal-contaminants-2024
Fate of contaminants during hydrothermal treatment of sewage sludge
Hydrothermal contaminant-fate review covering pathogens, ARGs, metals, organics, and PFAS uncertainty across HTC/HTL/HTG.
Open sourcebio-full-scale-ad-2024
Intracellular and extracellular ARG fate in full-scale anaerobic digestion
Full-scale anaerobic digestion source separating intracellular, extracellular, EPS-associated, and cell-free ARG behavior.
Open sourcebio-thermal-alkaline-2026
Thermal alkaline hydrolysis and biochar addition effects on ARG fate in sludge AD
Recent thermal/alkaline hydrolysis plus biochar source for ARG fate and sludge digestion interaction.
Open sourcebio-mp-arg-2026
Microplastics and ARG nexus in sludge thermal hydrolysis and AD
2026 review source for microplastics, biofilms, ARGs, and thermal hydrolysis plus anaerobic digestion in sludge treatment.
Open sourcebio-cdc-amr-environment
CDC antimicrobial resistance in the environment and food supply
CDC One Health source noting resistant germs and genes can survive treatment and move through environmental pathways.
Open sourcebio-cdc-water-resistance
CDC understanding antibiotic resistance in water
CDC source for wastewater surveillance, biofilms, and the difficulty of monitoring resistance pathways.
Open sourcebio-htl-review-2026
Hydrothermal liquefaction of municipal sludge: biocrude and fuel upgrading
Recent sludge HTL review for wet conversion and industrialization context that must be paired with biological safety checks.
Open sourcebio-hydrochar-one-health-2026
Hydrochar as a One Health strategy to mitigate ARGs
One Health hydrochar source for ARG mitigation, soil/slurry interfaces, and residual-route caution.
Open sourcethe fuel plan is not biological-safety-ready until culture/indicator, viability-PCR, qPCR/ddPCR ARG, metagenomic resistome, hydrochar leachate, aqueous regrowth, and destruction-fallback checks pass together. Modeling basis: pathogen, ARG, MGE, viability, and regrowth gates for one sewage-sludge-to-fuel validation campaign. Selected package: SCWO biohazard destruction fallback; HTL endpoint inactivation and phase split gate; Hydrochar leachate and residual biosecurity gate; ARG and MGE qPCR/ddPCR fate gate; HTL aqueous return regrowth and nitrification bioassay; Viability-PCR plus culture indicator gate.