| Parameter | Effect | Optimization Rule | | :--- | :--- | :--- | | | Smaller particles = larger surface area, faster extraction. | Crush or grind – but avoid excessive fines that cause clogging. | | Temperature | Higher temp = higher solubility & faster diffusion. | Maximum possible without degrading heat-sensitive solutes. | | Solvent Choice | Must dissolve solute but not solid. | "Like dissolves like" – polarity matching is key. | | Agitation | Reduces boundary layer resistance. | Moderate stirring – too vigorous may cause emulsification. | | Contact Time | Longer time increases yield (but diminishing returns). | Determine equilibrium time via pilot tests. | | Solvent-to-Solid Ratio | More solvent = higher driving force. | Balance yield vs. downstream concentration costs. |

: Uses high temperature and pressure to increase solubility and penetration, making it a more efficient "green" alternative.

Solid-liquid solvent extraction, often simply referred to as , is a fundamental separation process used across countless industries—from brewing your morning cup of coffee to extracting precious metals from the earth.

Extracting vegetable oils from seeds (like soy or sunflower), decaffeinating coffee beans, and producing sugar from beets.