Destruction of Trace Organics in Otherwise Ultra Pure Water

Kimberly Magrini

Research output: NRELTechnical Report


A number of experiments were conducted to determine the economic viability of applying various ultraviolet (UV) oxidation processes to a waste water stream containing approximately 12 mg/L total organic carbon (TOC), predominately ethylene glycol. In all experiments, a test solution was illuminated with either near-UV or a far-UV light alone or in combination with a variety of photocatalysts andoxidants. Based upon the outcomes of this project, both UV/photocatalysis and UV/ozone processes are capable of treating the water sample to below detection capabilities of TOC. However, the processes are fairly energy intensive; the most efficient case tested required 11 kWh per order of magnitude reduction in TOC per 1000 L. If energy consumption rates of 5-10 kWh/1000 L are deemed reasonable,then further investigation is recommended.
Original languageAmerican English
Number of pages20
StatePublished - 1995

NREL Publication Number

  • NREL/TP-21712

Other Report Number

  • SAND94-3170


  • ethylene glycol
  • oxidation
  • ultraviolet
  • waste water


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