of the overall volumetric mass-transfer coefficient (K xa) using nitrogen stripping (N 2–H 2 O–
O 2) and nitrogen stripping coupled with vacuum degassing (vacuum–N 2–H 2 O–O 2)
processes. Principal component regression (PCR) method was used to establish a mass
transfer model, and the number of principal components (PCs) was examined by three
different techniques including cumulative percent variance (CPV), average eigenvalue (AE) …