March 9, 2023

Rheology of a Wet Waste Feedstock


The current study provides rheological characterization of a representative HTL feedstock, Wet Waste Feedstock # 22 (WW22), as a function of HTL-prototypic temperature and shear rates. Feed WW22 is derived from a regionally representative blend of food, waste water sludges, and FOG (fats, oils, and greases). Rheological characterization of WW22 as a function of temperature provides, in part, key information for development and economic assessment of HTL wet waste slurry handling and heating operations, which may facilitate improved design rigor and optimization of HTL unit operations.

Published: March 9, 2023


Daniel R.C., C. Burns, A.J. Schmidt, and M.R. Thorson. 2023. Rheology of a Wet Waste Feedstock Richland, WA: Pacific Northwest National Laboratory.

Research topics