Candidate loops
- Test refined borate compounds as lower-toxicity fluxes in controlled precious-metal recovery research; do not imply automatic replacement of all reagents.
- Study zeolite and biochar blends for nutrient retention only after contaminant and agronomic testing.
- Use only verified clean biomass for pellets, activated carbon, or construction materials.
- Document every transfer with mass balance, chain of custody, and a safe end-of-life route.