Solvent Extraction Efficiency Calculator

Extraction Efficiency Formula:

\[ \eta = \frac{C_{initial} - C_{final}}{C_{initial}} \times 100 \]

Extraction Efficiency (η):

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1. What is Solvent Extraction Efficiency?

Definition: Extraction efficiency (η) measures how effectively a solute is transferred from one phase to another during solvent extraction.

Purpose: It quantifies the performance of extraction processes in chemistry, pharmaceuticals, and environmental engineering.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ \eta = \frac{C_{initial} - C_{final}}{C_{initial}} \times 100 \]

Where:

\( \eta \) — Extraction efficiency (%)
\( C_{initial} \) — Initial solute concentration (mol/L)
\( C_{final} \) — Final solute concentration (mol/L)

Explanation: The formula compares the concentration change before and after extraction to determine what percentage was successfully extracted.

3. Importance of Extraction Efficiency

Details: High extraction efficiency means more effective separation processes, reduced solvent waste, and better process economics.

4. Using the Calculator

Tips: Enter the initial and final concentrations in mol/L. Final concentration must be ≤ initial concentration.

5. Frequently Asked Questions (FAQ)

Q1: What's considered good extraction efficiency?
A: Typically >90% is good, >95% is excellent, though requirements vary by application.

Q2: Can efficiency exceed 100%?
A: No, values over 100% indicate measurement errors or calculation mistakes.

Q3: How can I improve extraction efficiency?
A: Optimize solvent choice, pH, temperature, contact time, and phase ratio.

Q4: Does this account for multiple extraction steps?
A: No, this calculates single-step efficiency. For multiple steps, use the final concentration after all steps.

Q5: What if my final concentration is zero?
A: This would give 100% efficiency, meaning complete extraction (rare in practice).