How diffusivity and mass transfer resistance linked to each other?

Solutions

Expert Solution

Diffusivity ‘D’ is defined as the ratio of the molar flux to the corresponding concentration gradient and its units are m²/s.

Mass transfer coefficient ‘k’ is defined as Molar flux = (Mass transfer coefficient) X (Concentration difference)

And Mass transfer resistance is just the reciprocal of the mass transfer coefficient (i.e 1/k).

Several theories have been proposed to relate the diffusivity with MT coefficients,namely

1) Film theory says that k is directly proportional to D .

2) Penetration theory says that k is equal to , where theta is the time required for the bubble torise a distance equal to it's diameter.

3) Surface Renewal theory says that k is proportional to .

Amanda K answered 2 years ago

Next > < Previous

Related Solutions

When divisions transfer products or render services to each other, a transfer price is used to...

When divisions transfer products or render services to each other, a transfer price is used to charge for the products or services. Explain the three approaches to setting transfer prices and provide an example of each.

31. An example of vertical gene transfer of antibiotic resistance is the a. development of vancomycin...

31. An example of vertical gene transfer of antibiotic resistance is the a. development of vancomycin resistance via the acquisition of an Enterococcus resistance gene b. uptake of beta-lactamase genes by Streptococcus pneumoniae. c. development of antibiotic resistance via ribosomal mutation. d. transduction of an antibiotic resistance cassette from one strain of MRSA to another. e. transfer of conjugative plasmids carrying resistances genes from one strain to another.

Companies are required to transfer “other comprehensive income” each period to shareholders’ equity. The FASB Accounting...

Companies are required to transfer “other comprehensive income” each period to shareholders’ equity. The FASB Accounting Standards Codification® represents the single source of authoritative U.S. generally accepted accounting principles. Obtain the relevant authoritative literature on reporting other comprehensive income in shareholders’ equity using the FASB Accounting Standards Codification® at the FASB website (www.fasb.org). Required: 1. What is the specific nine-digit Codification citation (XXX-XX-XX-XX) that describes the guidelines for reporting that component of shareholders’ equity? 2. What is the specific nine-digit...

The Mass Moment of Inertia of a body is a property that measures the resistance of...

The Mass Moment of Inertia of a body is a property that measures the resistance of the body to angular acceleration True False The Parallel-Axis Theorem is I = IG + md2 True False The resultant (summation) moment about the mass center due to all the external forces is equal to the moment of inertia about center of mass times the angular velocity of the body. True False Mathematically, three equations with four unknowns cannot be solved. True False The...

Two projectiles with 50kg mass each are launched in opposite directions towards each other, both at...

Two projectiles with 50kg mass each are launched in opposite directions towards each other, both at an angle of 30 degrees off the horizontal. They both have the same initial velocity of 75m/s and they are separated by a distance of 200m. a.) What is their combined initial kinetic energy? b.) Right before they collide, how high off the ground are they? c.) What is their total momentum here? (both directions) d.) When they collide they stick together and lost...

Provide an example of how healthcare can be linked to each of the three pillars of...

Provide an example of how healthcare can be linked to each of the three pillars of sustainability (economy, society, and environment). Please explain (150+ words).

Why is mass transfer a major factor in separation processes?

Two cars are on a level air track. They have the same mass as each other....

Two cars are on a level air track. They have the same mass as each other. The red car is given a push so that it moves toward the blue car with an initial speed of 2 m/s, while the blue car is given a push so that it moves toward the red car with an initial speed of 4 m/s. If the cars completely stick together, find their combined speed after the collision. 2. This is an inelastic collision,...

How do bacteria communicate with each other

How are cognitive processes related to each other

Subjects