The published mass balance does not close. 261.8 t/y — 7.5% of the dry
feed — reaches neither a product nor the boiler. 52.5 t/y of that is unrecovered
hemicellulose; the other 209.3 t/y is the biofiller, which the published CHP-feed formula
(lignin + recovered sugars − biofiller − PHA) deducts from a lignin
pool that never contained it. The formulae below are reproduced unchanged, so the
mass-balance closure check reads −7.48% rather than zero.
Work through a full life cycle assessment and techno-economic analysis one step at a time. Click anything on the flowsheet to see what it is or to change it, then run each step yourself and watch what moves.
Amber — yours to set Grey — calculated Dashed — stale