PLAN / RESOURCE SCENARIO PLANNER
Make your assumptions visible.
Compare two simplified annual material-processing scenarios. All starting values are illustrative assumptions; replace them with your own evidence.
ANNUAL COMPARISON
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Method, formulas and boundaries
For annual usable demand D, secondary share s and primary yield y (percentages divided by 100):
- Usable secondary input = D × s. It is assumed to be ready for processing, with no further mass loss.
- Primary feed = D × (1 − s) ÷ y.
- Primary processing loss = primary feed − D × (1 − s).
- Energy (MWh) = (primary feed × primary intensity + secondary input × secondary intensity) ÷ 1,000.
- Gross process water (m³) = (primary feed + secondary input) × water intensity.
- Process water makeup (m³) = gross process water × (1 − reuse fraction).
Each row compares B minus A. A negative difference means B has a lower modelled requirement. The model covers an abstract processing boundary only. It excludes upstream secondary collection and recovery, mining waste, transport, product quality differences, treatment energy, evaporation, discharge, emissions and embodied impacts. Water makeup is not an estimate of consumptive use or basin-level water stress. A 100% reuse case is a mathematical endpoint, not an operational recommendation.
These formulas explain a scenario; they are not a commodity-specific engineering model, a lifecycle assessment or a feasibility guarantee. Read the research context before interpreting the outputs.