Concepts of a Uniform Nomenclature for Bioprocess Kinetics

There is a distinction among symbols for the absolute rate of a reaction (rj, the rate of transport of a substance (nj), and the rate of heat (q). Lower case italic letters are used the dot indicating the first derivative is omitted. 

Rate constants are always designated with k, uniformly for both reactions and transport k or kj. or with /cl, kg, /cq, and k. The rate of reaction, with n the order of the reaction is generally 

The dimensions of the reaction rate constant, k, are [t (mol/V) ] thus, dependent on the order of the reaction. For the rate of mass transfer (with Ac = the concentration gradient)  

Microscopic stoichiometric coefficients Va a - v - b + Vq c Macroscopic yield coefficients 1 

/cjr and /chtr are phenomenological transfer coefficients, which are further interpreted using true transfer coefficients (/cli,/cl25 h) d the corresponding interfacial areas Uq i, lis, an), 

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