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Research on Chemical Intermediates

, Volume 31, Issue 4–6, pp 449–461 | Cite as

From the fundamentals of photocatalysis to its applications in environment protection and in solar purification of water in arid countries

  • Hoai Bui Thu
  • Maithaa Karkmaz
  • Eric Puzenat
  • Chantal Guillard
  • Jean-Marie Herrmann
Article

A specially designed titania photocatalyst was prepared by coating Ahlstrom non-woven paper, used as a flexible photocatalytic support, with Millennium PC500 anatase. At the same time, a new solar photoreactor (STEP) was designed based on the multi-step cascade falling-film principle to ensure a good exposure to sunlight and a good oxygenation of the effluent to be treated. Several types of reactants were treated: 4-chlorophenol as a model organic pollutant; formetanate, a widely used pesticide in horticulture; a mixture of pesticides used in vineyards; and Indigo Carmine and Congo Red, which are complex multifunctional dye molecules. Each reaction was performed simultaneously in a solar CPC slurry photoreactor and in the STEP photoreactor under identical solar exposure to better evaluate and validate the results obtained. The STEP solar reactor was found to be as efficient as the CPC reactor for 4-chlorophenol, formetanate and pesticides mixture total degradation.

PHOTOCATALYSIS TITANIA SOLAR PURIFICATION ENVIRONMENT PROTECTION PHOTOREACTOR 

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© VSP 2005

Authors and Affiliations

  • Hoai Bui Thu
  • Maithaa Karkmaz
  • Eric Puzenat
  • Chantal Guillard
  • Jean-Marie Herrmann

There are no affiliations available

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