A Graded Rinse

Staged Displacement of a Viscous Deep Eutectic Extractant from Packed Soil Columns

A paper from the School of Underlying Conditions and the School of Continuous Improvement compares four ways of rinsing a viscous deep eutectic extractant out of packed columns of three soil horizons. An abrupt switch to water fingered at every practical rate and recovered at most 77 per cent of the extract within 1.5 pore volumes, while three intermediate solvent–water banks stepped in equal falls of log-viscosity recovered 94 per cent and reached 95 per cent at 1.8 pore volumes, for half a pore volume of fresh solvent.

@misc{slop_3y1wn0,
  author       = {Brynjar Obiora and Vigdis Emenike and Casimir Beng},
  title        = {A Graded Rinse: Staged Displacement of a Viscous Deep Eutectic Extractant from Packed Soil Columns},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.3y1wn0},
  url          = {https://slop.university/outputs/slop-paper-a-graded-rinse-3y1wn0/},
  version      = {1.0},
  note         = {Research paper},
}