Rate of Reactant A for Straight Mass Transfer for Liquid Film using Volume of Contactor Calculator

Formula Used:

\[ r''''_A = -(k_{Al} \times a \times (C_{Ai} - C_A)) \]

Liquid Phase Mass Transfer Coefficient (k_Al):

m/s

Interfacial Area using Contactor (a):

1/m

Concentration of Reactant A at Interphase (C_Ai):

mol/m³

Reactant Concentration (C_A):

mol/m³

Overall Reaction Rate (r''''_A):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is Rate of Reactant A for Straight Mass Transfer?

Definition: This calculator determines the overall reaction rate based on the volume of contactor for straight mass transfer in liquid film.

Purpose: It helps chemical engineers calculate the reaction rate when considering mass transfer limitations in liquid films.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ r''''_A = -(k_{Al} \times a \times (C_{Ai} - C_A)) \]

Where:

\( r''''_A \) — Overall reaction rate based on volume of contactor (mol/m³·s)
\( k_{Al} \) — Liquid phase mass transfer coefficient (m/s)
\( a \) — Interfacial area using contactor (1/m)
\( C_{Ai} \) — Concentration of reactant A at interphase (mol/m³)
\( C_A \) — Reactant concentration in bulk liquid (mol/m³)

Explanation: The rate is calculated as the product of mass transfer coefficient, interfacial area, and concentration driving force.

3. Importance of This Calculation

Details: Accurate reaction rate calculation is crucial for designing chemical reactors and optimizing reaction conditions.

4. Using the Calculator

Tips: Enter all required parameters with appropriate units. The calculator will compute the overall reaction rate based on contactor volume.

5. Frequently Asked Questions (FAQ)

Q1: What does a negative reaction rate mean?
A: The negative sign indicates the reactant is being consumed in the reaction.

Q2: How do I determine the mass transfer coefficient?
A: It can be determined experimentally or estimated using correlations for specific systems.

Q3: What's a typical value for interfacial area?
A: This varies greatly depending on the contactor type, ranging from 100 to 1000 m²/m³ for packed beds.

Q4: Why is the concentration difference important?
A: The driving force for mass transfer is proportional to the concentration difference between interface and bulk.

Q5: Can this be used for gas-liquid systems?
A: Yes, when considering the liquid film resistance in gas-liquid mass transfer.