Material Recovery Facility Efficiency Calculator
Measures how effectively a Material Recovery Facility (MRF) separates clean recyclables from incoming mixed waste, reporting recovery rate and residual (loss) rate as percentages. Use it to benchmark facility performance or identify contamination problems.
About this calculator
A Material Recovery Facility sorts mixed recyclables into clean commodity streams. Two key performance metrics are the recovery rate — the share of input material that becomes sellable clean product — and the residual rate — the share that is neither recovered nor contaminated (i.e., lost to processing shrinkage or fine residue). The formulas are: Recovery Rate (%) = (recoveredMaterial / inputMaterial) × 100, and Residual Rate (%) = ((inputMaterial − recoveredMaterial − contaminatedMaterial) / inputMaterial) × 100. The combined formula used here outputs both metrics simultaneously. A world-class single-stream MRF typically achieves a recovery rate above 85% and keeps contamination below 10%. Contaminated material is rejected and usually sent to landfill, so minimizing it directly improves both environmental and financial performance.
How to use
A MRF receives 500 tons of mixed recyclables in a week (inputMaterial = 500). Sorters recover 420 tons of clean material (recoveredMaterial = 420) and reject 45 tons as contaminated (contaminatedMaterial = 45). Recovery Rate = (420 / 500) × 100 = 84%. Residual Rate = ((500 − 420 − 45) / 500) × 100 = (35 / 500) × 100 = 7%. This means 84% of incoming material is sold as clean commodity, 9% is rejected as contamination, and 7% is residual loss — a reasonable but improvable performance profile.
Frequently asked questions
What is a good recovery rate for a material recovery facility?
Industry benchmarks vary by facility type and input stream. A modern single-stream MRF processing household recyclables typically targets a recovery rate of 85–92%. Dual-stream facilities (where paper and containers are collected separately) often achieve higher rates because source separation reduces cross-contamination. Rates below 80% usually signal equipment gaps, excessive contamination in the input stream, or operational inefficiencies that warrant further investigation.
How does contamination affect MRF efficiency and revenue?
Contamination — food residue, plastic bags, non-recyclables mixed in — causes clean materials to be downgraded or rejected entirely. Rejected material cannot be sold and is typically landfilled, eliminating its revenue potential and adding disposal cost. High contamination rates also damage downstream commodity quality, leading processors to pay lower prices or refuse loads altogether. Reducing contamination through better public education and clearer bin labeling is often the single most cost-effective way to improve MRF financial performance.
What is the difference between contaminated material and residual loss in a MRF?
Contaminated or rejected material is identifiable waste that sorters actively pull out of the stream — items like food-soiled containers, plastic bags, or electronics that cannot be processed. Residual loss refers to material that is neither recovered as clean product nor categorized as contamination; it typically consists of fine particles, shredded paper dust, broken glass fines, and processing shrinkage that fall through screens. Both reduce the amount of sellable output, but contamination is more controllable through improved source separation, whereas some residual loss is an unavoidable feature of mechanical sorting.