• AWWA JAW31524
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AWWA JAW31524

  • Journal AWWA - Carbon Regeneration: Dependence on Time and Temperature
  • Journal Article by American Water Works Association, 03/01/1992
  • Publisher: AWWA

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The time and temperature of regeneration were examined in a benchscale study using granular activated carbon (GAC) that had been loaded in a treatment plant and a laboratory. The rate of regeneration was constant at a given temperature for time periods up to 30 min and increased exponentially with increasing temperature. The reactivity of the base carbon was important in determining the proper time and temperature for regeneration. For coal-based GAC loaded with naturally occurring organic material and methylene blue, GAC capacity was returned to that of virgin carbon at a temperature of 850C in 15 min. Shorter times and lower temperatures resulted in a loss of adsorption capacity. Longer times resulted in increased capacity for large molecules but the same or reduced capacity for small adsorbates. Includes 29 references, tables, figures.

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