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Plastic Flow Mass-Balance Calculator — result sheet
Balance an annual plastic input against recycled, incinerated, landfilled, and leaked flows, then show recycling, leakage, and unaccounted shares.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Accounted flow = recycled + incinerated + landfilled + leaked; unaccounted balance = annual input − accounted flow; each flow rate = flow ÷ annual input × 100.
A policy or research discussion needs a clear system boundary before it needs a percentage. This worksheet starts with one annual input and assigns reported mass to four named outcomes. It flags impossible totals, reports the remaining balance, and makes recycling and leakage rates comparable to the same input rather than mixing denominators.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Annual plastic input — tonnes/year; minimum 1.0E-6; maximum 1000000000000000
- Recycled flow — tonnes/year; minimum 0; maximum 1000000000000000
- Incinerated flow — tonnes/year; minimum 0; maximum 1000000000000000
- Landfilled flow — tonnes/year; minimum 0; maximum 1000000000000000
- Leaked or mismanaged flow — tonnes/year; minimum 0; maximum 1000000000000000
Worked example
| Input | Value |
|---|---|
| Annual plastic input | 100000 |
| Recycled flow | 30000 |
| Incinerated flow | 20000 |
| Landfilled flow | 40000 |
| Leaked or mismanaged flow | 5000 |
The listed flows account for 95,000 tonnes, leaving 5,000 tonnes unaccounted; recycling is 30% and leakage is 5% of input.
Assumptions and limits
- All flows use the same mass unit, time period, geography, and system boundary.
- The four listed outputs are mutually exclusive for this worksheet; double counting must be removed before entry.
- An unaccounted balance is not automatically leakage; it may represent stock change, exports, data gaps, or another omitted flow.
- Incineration is reported as a flow category and is not treated as recycling or material recovery.
- A recycling rate is calculated against the annual input supplied by the user, not against a different waste denominator.
- The page does not assess treaty compliance, national policy performance, or legal definitions.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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