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Definition: This calculator determines the original weight of solute in a solid based on washing parameters in batch leaching operations.
Purpose: It helps chemical engineers and process technicians estimate the initial solute content from post-washing measurements.
The calculator uses the formula:
Where:
Explanation: The formula accounts for the dilution effect of multiple washing stages on the remaining solute concentration.
Details: Accurate calculation helps in process optimization, determining extraction efficiency, and evaluating washing effectiveness.
Tips: Enter the remaining solute weight, solvent amounts (decanted and remaining), and number of washings. All values must be > 0.
Q1: What is batch leaching?
A: A process where solids are contacted with solvent to extract soluble components, followed by separation and washing stages.
Q2: Why is the solvent ratio important?
A: The b/a ratio determines how effectively each washing stage removes solute from the solid.
Q3: How does number of washings affect the result?
A: More washings typically mean more solute removal, requiring higher original solute content to achieve the same remaining weight.
Q4: What if my solvent remaining is zero?
A: The formula requires a > 0 as division by zero is undefined. In practice, some solvent always remains in the solid.
Q5: Can this be used for continuous processes?
A: No, this formula specifically applies to batch washing operations with discrete stages.