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Related Experiment Videos

Measuring Fenton's reaction kinetics at one-second intervals.

L C Ong1, Y H Lin, T H Wang

  • 1Department of Chemical Engineering, University of Saskatchewan, Canada.

Journal of Environmental Science and Health. Part A, Toxic/Hazardous Substances & Environmental Engineering
|September 8, 2001
PubMed
Summary

A new device measures Fenton

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Area of Science:

  • Environmental Chemistry
  • Chemical Kinetics

Background:

  • Fenton's reaction is crucial for wastewater treatment.
  • Measuring its kinetics accurately is challenging.

Purpose of the Study:

  • To develop a simple device for rapid Fenton's reaction kinetics measurement.
  • To investigate the degradation of 2,4-dinitrophenol (DNP) using this device.

Main Methods:

  • Implementation of quench flow technique for device design.
  • Utilizing 2,4-dinitrophenol (DNP) as a model pollutant.
  • Monitoring DNP decomposition and color change using ADMI values.

Main Results:

  • Over 40% DNP decomposition occurred within the first second.
  • A stagnant reaction phase was observed for 29 seconds.
  • ADMI color value showed a 5% drop, correlating with DNP degradation rates.
  • A novel, constant rate degradation pattern was observed between 5 and 29 seconds.

Conclusions:

  • The developed device enables rapid kinetic measurements of Fenton's reaction.
  • ADMI color value is a viable parameter for computerized Fenton process control.
  • A unique, constant-rate degradation pattern in Fenton's reaction was identified.

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