Research Article
Apr 1969
Energy Concepts of Aerobic Microbial Metabolism
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VIEW THE REPLYPublication: Journal of the Sanitary Engineering Division
Volume 95, Issue 2
Abstract
Three different energy concepts of cell yield are investigated using synthesis data measured in mixed aerobic cultures for 15 different substrates. These include, the energy-synthesis concepts of McKinney, Servizi and Bogan, and McCarty. Growth, substrate removal, and oxygen uptake measurements at 25○ C. are correlated with various thermodynamic functions including enthalpy and free energy. Efficiency measurements based upon free energy computations agree with McCarty's results. However, the study results conflict with the magnitude of cell yield per unit change of free energy of oxidation as estimated by Servizi and Bogan. Conclusions regarding the validity of McKinney's heat loss-cell yield relationship were not possible although the proportionality between heat of reaction and oxygen utilization was verified. This latter relationship is based upon hypothetical oxidative assimilation equations computed from the experimental data and assumed protoplasm formulations. Substrates used in the study included compounds representing the basis food substances of carbohydrates, fatty and amino acids.
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Published In
Journal of the Sanitary Engineering Division
Volume 95 • Issue 2 • April 1969
Pages: 253 - 268
Copyright
© 1969 American Society of Civil Engineers.
History
Published in print: Apr 1969
Published online: Feb 12, 2021
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Authors
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Carl E. Burkhead, AM.ASCE
Asst. Prof., Dept. of Civ. Engrg., Univ. of Kentucky, Lexington, Ky.
Ross E. McKinney, M.ASCE
Parker Prof., Dept. of Civ. Engrg., Univ. of Kansas, Lawrence, Kan.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.