A-surface (m2) eql Oxygenfte-DA 6-thickness(m) AC-the concentration difference over the film(mol m-3) D-the diffusivity of the gas in the film(m2 h-1) eq2 KL- 2.8↓ eq3 △C=C*-C △c-The force(molm3) eq4a=∑A/V a-The specific interface area(m-) By substituting eqs.2-4 into eq.1,OTR is given by: OTR=KLa(C*-C)OTR-The oxygen transfer rate(mol m3h1)OTR-The oxygen transfer rate(mol m-3 h-1)  KL = D C =C*−C a =  A/V A-surface (m2 ) δ-thickness (m) △C-the concentration difference over the film (mol m-3 ) D- the diffusivity of the gas in the film (m2 h -1 ) OTR=KL a (C*-C) 1. D 2.δ  C Oxygenflux DA  = ΔC-The force( mol m-3) a-The specific interface area(m-1 ) By substituting eqs.2-4 into eq.1 , OTR is given by: eq1 eq2 eq3 eq4