Convert Pounds per day to Long tons per minute
Convert Pounds per day (lb/d) to Long tons per minute (long ton/min) instantly and accurately.
Conversion Formula
long ton/min = lb/d × 3.100198413e-7
About Pounds per day
The pound per day (lb/d) equals 0.45359237/86400 ≈ 5.249×10⁻⁶ kg/s, used in wastewater engineering for reporting biochemical oxygen demand (BOD) loads, nutrient loadings, and sludge production. US NPDES permits set effluent mass-load limits in lb/d; a municipal WWTP serving 10 000 people generates roughly 1 500-3 000 lb/d of dry sludge solids. 1 lb/d ≈ 5.249×10⁻⁶ kg/s.
About Long tons per minute
The long ton per minute (long ton/min) equals 1 016.0469088/60 ≈ 16.934 kg/s, historically used in British blast-furnace output measurements, port handling-rate calculations, and Royal Navy fuel-consumption specifications. A large grain terminal loading a Panamax vessel may achieve 4 000 long ton/h = ≈67 long ton/min. 1 long ton/min ≈ 16.934 kg/s.
Quick Reference Table
| Pounds per day (lb/d) | Long tons per minute (long ton/min) |
|---|---|
| 1 lb/d | 3.1 × 10-7 long ton/min |
| 2 lb/d | 6.2 × 10-7 long ton/min |
| 5 lb/d | 1.55 × 10-6 long ton/min |
| 10 lb/d | 3.1 × 10-6 long ton/min |
| 25 lb/d | 7.75 × 10-6 long ton/min |
| 50 lb/d | 1.55 × 10-5 long ton/min |
| 100 lb/d | 3.1 × 10-5 long ton/min |