##  [Volumetric Mass Transfer Coefficient](/volumetric-mass-transfer-coefficient) 

  ##  [Volumetric Mass Transfer Coefficient](https://engineering.quantumdictionary.io/volumetric-mass-transfer-coefficient-0) 

  

 [![Engineering & Applied Technologies Dictionary](/sites/default/files/styles/large/public/2026-01/Engineering%20%26%20Applied%20Technologies.png.webp?itok=_IKO7_-n)](/topic-specific-dictionaries/engineering-applied-technologies)



**Engineering & Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

The product kLa of the phase mass transfer coefficient (kL) and the interfacial area per unit reactor volume (a or Ai) that quantifies the rate at which a conserved scalar (e.g., dissolved gas) transfers between phases per unit bulk volume; its units are reciprocal time and it appears in rate expressions of the form R = kLa (C* − C).