Solid-liquid — Extraction

Unlike simple washing, SLE involves complex diffusion mechanisms. The process generally occurs in three stages:

The versatility of Solid-Liquid Extraction makes it indispensable in various sectors: solid-liquid extraction

Solid-liquid extraction has a wide range of applications, including: Unlike simple washing

Ideally, the solid feed consists of two parts: and selectivity (e.g.

| Parameter | Feature Description | |-----------|----------------------| | | Increases solubility and diffusion rates (but may degrade thermolabile compounds) | | Solvent type | Polarity, pH, viscosity, toxicity, and selectivity (e.g., water, ethanol, hexane) | | Particle size | Smaller particles increase surface area but may cause compaction or fines | | Solvent-to-solid ratio | Higher ratio improves yield but increases downstream evaporation load | | Agitation/mixing | Reduces boundary layer thickness; essential for suspended solids | | Extraction time | Longer time increases yield up to equilibrium; may extract undesired compounds | | Pressure | Used in pressurized liquid extraction (e.g., PLE, ASE) to keep solvent liquid above boiling point |