Potential east–west material loops, kept visible as hypotheses until chemistry, safety, and economics are demonstrated.
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.
