lecture 21 - department of earth and planetary...

12
Lecture 21

Upload: others

Post on 02-Oct-2020

4 views

Category:

Documents


0 download

TRANSCRIPT

Page 1: Lecture 21 - Department of Earth and Planetary Sciencesepsc.wustl.edu/~catalano/epsc500/Lecture21.pdf · Lecture 21 . Microbial Energy Sources • Respiration: • Fermentation: Monod

Lecture 21

Page 2: Lecture 21 - Department of Earth and Planetary Sciencesepsc.wustl.edu/~catalano/epsc500/Lecture21.pdf · Lecture 21 . Microbial Energy Sources • Respiration: • Fermentation: Monod
Page 3: Lecture 21 - Department of Earth and Planetary Sciencesepsc.wustl.edu/~catalano/epsc500/Lecture21.pdf · Lecture 21 . Microbial Energy Sources • Respiration: • Fermentation: Monod

Microbial Energy Sources

• Respiration:

• Fermentation:

Page 4: Lecture 21 - Department of Earth and Planetary Sciencesepsc.wustl.edu/~catalano/epsc500/Lecture21.pdf · Lecture 21 . Microbial Energy Sources • Respiration: • Fermentation: Monod
Page 5: Lecture 21 - Department of Earth and Planetary Sciencesepsc.wustl.edu/~catalano/epsc500/Lecture21.pdf · Lecture 21 . Microbial Energy Sources • Respiration: • Fermentation: Monod
Page 6: Lecture 21 - Department of Earth and Planetary Sciencesepsc.wustl.edu/~catalano/epsc500/Lecture21.pdf · Lecture 21 . Microbial Energy Sources • Respiration: • Fermentation: Monod
Page 7: Lecture 21 - Department of Earth and Planetary Sciencesepsc.wustl.edu/~catalano/epsc500/Lecture21.pdf · Lecture 21 . Microbial Energy Sources • Respiration: • Fermentation: Monod

Monod Kinetics

Acetate-limited Sulfate-limited

[X] = biomass concentration, KS’ = half-saturation constant for the substrate (see MM kinetics)

Dual-Monod

KD’, KA’ = half-saturation constant for the Donor and Acceptor substrates

Microbial Growth

Page 8: Lecture 21 - Department of Earth and Planetary Sciencesepsc.wustl.edu/~catalano/epsc500/Lecture21.pdf · Lecture 21 . Microbial Energy Sources • Respiration: • Fermentation: Monod

Correcting for the Thermodynamic Driving Force

• The thermodynamic potential factor (TPF) for microbial kinetics is of a form like: – The ΔGr part is the Q/K term we normally deal

with, just written differently – The ΔGP part is the energy needed for

phosphorylation (ATP production) • This reduces the overall free energy of reaction, and is

often about 40 to 50 kJ/mol

Page 9: Lecture 21 - Department of Earth and Planetary Sciencesepsc.wustl.edu/~catalano/epsc500/Lecture21.pdf · Lecture 21 . Microbial Energy Sources • Respiration: • Fermentation: Monod

Microbial Rate Laws

• Monod:

• Dual Monod:

Page 10: Lecture 21 - Department of Earth and Planetary Sciencesepsc.wustl.edu/~catalano/epsc500/Lecture21.pdf · Lecture 21 . Microbial Energy Sources • Respiration: • Fermentation: Monod
Page 11: Lecture 21 - Department of Earth and Planetary Sciencesepsc.wustl.edu/~catalano/epsc500/Lecture21.pdf · Lecture 21 . Microbial Energy Sources • Respiration: • Fermentation: Monod
Page 12: Lecture 21 - Department of Earth and Planetary Sciencesepsc.wustl.edu/~catalano/epsc500/Lecture21.pdf · Lecture 21 . Microbial Energy Sources • Respiration: • Fermentation: Monod