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Author Spotlight: Advancing Structural and Biochemical Studies of Proteins Through Thermal Shift Assays
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Substrate utilization kinetic model for biological treatment process.

Y R Chen1, A G Hashimoto1

  • 1Roman L. Hruska U.S. Meat Animal Research Center, Agricultural Research, Science and Education Administration, U.S. Department of Agriculture, Clay Center, Nebraska 68933.

Biotechnology and Bioengineering
|January 19, 2018
PubMed
Summary
This summary is machine-generated.

Contois

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Area of Science:

  • Environmental Science
  • Biotechnology
  • Chemical Engineering

Background:

  • Organic waste treatment relies on biological processes.
  • Kinetic models are essential for optimizing waste treatment efficiency.
  • Understanding substrate biodegradability is key to effective treatment.

Purpose of the Study:

  • To assess the applicability of Contois' kinetic equation for aerobic and anaerobic organic waste treatments.
  • To incorporate a refractory coefficient into the kinetic equation to account for non-biodegradable organic matter.
  • To investigate the influence of influent concentration and temperature on kinetic parameters.

Main Methods:

  • Applied Contois' kinetic equation with a refractory coefficient to aerobic digestion and anaerobic dairy waste treatment data.
  • Analyzed the independence of kinetic parameters and refractory coefficients from influent organic substrate concentration.
  • Studied the effect of temperature on kinetic parameters and the refractory coefficient during anaerobic sewage sludge treatment.

Main Results:

  • The modified Contois' kinetic equation demonstrated a very good fit to both aerobic and anaerobic treatment data.
  • Kinetic parameters and refractory coefficients were found to be independent of influent organic substrate concentration.
  • Kinetic parameters varied with temperature in anaerobic sewage sludge treatment, while the refractory coefficient remained constant.

Conclusions:

  • Contois' kinetic equation, with a refractory coefficient, accurately models aerobic and anaerobic organic waste treatments.
  • Effluent quality in biological waste treatment is confirmed to be dependent on influent organic waste concentration.
  • Temperature significantly affects kinetic parameters in anaerobic digestion, but not the refractory coefficient.