Domain framework: edt_framework
Scope
Biological systems and nature-based approaches applied to food, materials, waste treatment, and ecosystem function. WEF governance taxonomy treats genomics/biotech as a standalone governance domain; IPCC AR6 Ch. 7 embeds nature-based elements within AFOLU. CR_004
Key technologies
Mycelium-based materials, bioremediation, algae systems, CRISPR and improved crop varieties, constructed wetlands, community seed banks, phytoremediation, synthetic biology for waste processing, ecosystem restoration technology, biochar production, natural dyes and bio-based materials, biogas anaerobic digestion (PAU Janta Model and equivalents), biomass from crop residue (wheat straw, paddy husk, paddy straw, maize).
Evidence
- PAU Janta Model biodigester converts 1 ton/day cattle dung to 300 m³/day biogas → 1,800 kWh/day electrical output; biogas generator fully replaces diesel peaking generation in a 336-house village. LIT_003
- Village crop residue (2,400 tons/year of wheat straw, paddy husk, paddy straw, maize) fed to a 400 kW biomass generator produces approximately 1,342,353 kWh/year — exceeding the village’s total annual demand of 1,267 MWh without any grid input. LIT_003
- Global organic waste production exceeds 2 billion tons per year (IEA, 2021) — a feedstock resource that causes GHG emissions and water/soil pollution when mismanaged, and can be converted to biogas, thermal energy, or electricity via anaerobic digestion, gasification, or pyrolysis. LIT_005
- Medium-sized community biogas plant: USD 1–3 million initial investment (World Bank, 2018); 40% of rural communities have skills shortages for technical operation and maintenance; 30% face increased costs for organic waste collection and transport. LIT_005
- Bioenergy is the dominant technology across 259 rural decentralized energy case studies (1979–2024): 36% of cases — more than any other single category, ahead of mixed RES (29%), energy mix (18%), and solar (9%); bibliometric validation of D08 as co-equal with D01 in rural community energy design. LIT_004
- Households with biodigesters use 2.1–3.3 tons less fuelwood per year than equivalent households without — a direct, measurable reduction in biomass extraction pressure and indoor air pollution. LIT_004
- Kaur et al. (2024) frame agricultural waste management as bioengineering: converting biological waste streams into structured energy feedstock is simultaneously an energy solution and a waste-treatment solution — “bioengineering” rather than “waste disposal.” LIT_003
- Permaculture design system (Mollison’s 12 principles including Observe and Interact; Use and Value Diversity; Integrate Rather than Segregate; Produce No Waste) provides the foundational nature-based design framework for ecovillage ecosystem function — aligning human settlement design with natural ecological patterns and processes. LIT_012
- Auroville (Tamil Nadu): portions of Tropical Dry Evergreen Forest restored through topsoil preservation, rainwater collection, and assisted natural regeneration — active ecosystem restoration as a community land management practice sustained over 50+ years. LIT_012
- Tui Community (NZ, Tararua district): seaweed harvested from coastal areas used as soil amendment for agricultural beds; greywater treated through biological reed bed systems — closed-loop biological resource cycling at a functioning NZ ecovillage. Author’s personal account; treat as anecdotal, not peer-reviewed. LIT_012
Regenerative agriculture soil biology (NZ)
- RA soil practices (cover crops, reduced tillage, diverse pastures, bio-stimulants) target soil biological activity as the primary mechanism — improved microbial diversity, organic matter cycling, and soil structure underpin regenerative outcome claims. LIT_013
- NZ topsoil: 90 t C/ha (top 30cm) vs 30 t C/ha (Australia) — NZ has an unusually high existing soil carbon stock; RA practices maintain and build this stock; conventional tillage and input-intensive farming deplete it. LIT_013
- Bio-stimulants and soil microbiome management are active NZ research frontiers (Table 6, Grelet et al. 2021) — scientific basis for specific applications remains underdeveloped despite widespread practitioner use. LIT_013
- RA as nature-based solution: “the farm is a living system” (Principle 1) — D08 bio-based approaches and RA share the foundational framing of biological systems as productive infrastructure, not passive substrate. LIT_013
Nature-based food production in European ecovillages
- Composting (~90%), soil regeneration (~65%), food forests (~45%), and wild foraging (~45%) are the dominant food system approaches in 60 European ecovillages — conventional biological methods represent the core community food production stack; no surveyed community uses vertical farms; the value lies in communal integration of ecological knowledge, not technological sophistication. LIT_020
Closed biological loop systems (space-to-earth technology transfer)
- MELiSSA five-compartment closed biological loop (ESA, 20 years R&D): thermophilic anaerobic degradation (>90% waste degradation efficiency) → photoheterotrophic bacteria → nitrifying bacteria → cyanobacteria + Higher Plant Compartment; converts all organic waste into food, potable water, and oxygen with zero external input — proven operative at bench and pilot scale; confirmed “generic and applicable to all kinds of unit operations.” Space context; relevance is the proof of feasibility, not the specific engineering parameters. LIT_019
- Higher Plant Compartment (HPC): single controlled-environment biological system achieving food production, CO₂ fixation, O₂ generation, and potable water production simultaneously — the most integrated closed-loop food/water/air biotechnology demonstrated at pilot scale; directly applicable to the D08 frontier for community-scale closed resource cycling. LIT_019
Nature-based solutions for urban water and waste (Knivsta, Sweden)
- NBS graywater infiltration (filter beds, wetlands, ponds): local green area is 3,502–46,727% of what is needed for graywater treatment — NBS is the most oversubscribed solution in the seven-domain SS model; available biological capacity far exceeds urban graywater treatment demand across all density configurations. LIT_022
- Biogas from blackwater provides 6% of heat and 14% of transport fuel in dense multifamily (Case 1); biogas from food waste adds 5% heat and 10% transport — combined organic waste streams contribute to three metabolic functions simultaneously (heat, transport, nutrient recovery via digestate). LIT_022
SSI connections
- I01 Financial & economic sufficiency — agricultural waste streams as zero-cost feedstock reduce energy input costs; biogas generation eliminates diesel fuel expenditure; cost savings of
41k–46k/year vs grid in the Kaur et al. benchmark. LIT_003 - I07 Fulfilment of basic needs — agricultural waste volumes in the Kaur et al. village are sufficient to power the entire community’s energy demand from waste streams alone, without any grid input. LIT_003
- I09 Environmental sustainability — nature-based solutions restore ecological integrity; bioremediation addresses soil and water contamination; agricultural waste-to-energy eliminates open burning of crop residue.
- I02 Food security & sustainable agriculture — biotech crop improvements and algae systems expand local food production options; biogas digestate (post-processing residue) is a high-quality organic fertiliser.
- I08 Innovation & appropriate technology — represents the innovation frontier of community-scale biological technology.
Relevance to Neobiome
[How D08 technologies are assessed for near-term vs frontier application in a Neobiome pilot design.]
Open questions
[NZ biosecurity regulations for synthetic biology, practical maturity of mycelium/algae systems at community scale, links to questions/ pages.]
Connections
Links to
Referenced by