Rate laws continued substrate

The laws relating optimum operating temperature to medium composition are not well known. This relation was theoretically Investigated for processes whose rates saturate in substrate concentration. The Michaells-Menten reaction mechanism was modified to describe microbial biomass production and metabolite excretion in both batch and continuous reactors. 

The rate law is first order with respect to both [e ] and [R2S], where R = Me, Et, or Pr . The technique of continuously mixing solutions of solvated electrons (Na dissolved in NH3) with substrates in the cavity of an e.s.r. spectrometer continues to be used. Radical anions have been characterized in the reactions with acrylic acid and with some dicarboxylic acids. 

Owing to the particular structure of the substrate with a surface bearing a relatively high density of hydrocarbon chains protruding toward the continuous medium, the diffusion of sorbate inside these chains cannot be ignored, which may constitute the rate controlling step. This diffusion process could be described by Weber and Morris [44], which is based on Pick s Second Law [45]. 

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