Decontamination and disinfection of water by solar photocatalysis: The pilot plants of the Plataforma Solar de Almeria

Sixto Malato, Manuel I. Maldonado, Pilar Fernandez-Ibanez, Isabel Oller, Inmaculada Polo, Ricardo Sánchez-Moreno

Research output: Contribution to journalArticle

81 Citations (Scopus)

Abstract

This workreviewstheuseofsunlighttoproducetheHO� radicals byTiO2 nanophotocatalysis.There-acting systemsnecessaryforperformingsolarphotocatalysiswillbedescribedandthefactorswhichgovernthekineticsofphotocatalysissuchasinitialconcentrationofreactant,massofcatalyst,pH,temperature,radiant flux andconcentrationofoxygenarehighlighted.Severalapproachesinordertoimprovethephotocatalysisefficiency ofTiO2 will bealsodescribed.Solarreactorsengineeringissuesforphotocatalyticwatertreatmentwillbereviewedaswellastheuseofthesolarphotocatalyticprocessesto inactivatemicroorganismspresentinwater,placingspecialemphasistothemechanismsactingduringthe process,mainlyhydroxylradicalandsingletoxygengeneration,andonexperimentalsystemsmadeto optimizethisdisinfectiontechnique.Heterogeneousphotocatalysisisalsoanattractivetechniqueforobtaining hydrogeninacleanway.Inthelastdecadesdifferentphotocatalyticsystemsforhydrogengenerationwithsimultaneousremovaloforganicpollutantshavebeenstudiedatlaboratoryscalebut,sofar,littlehasbeenpublishedaboutthesesystemsatalargerscale.Thepresentworkwillalsoshowthesimultaneous photocatalytichydrogenproductionandorganicpollutantremovalunderdirectsolarir-radiation andatpilot-plantscaleatthePlataformaSolardeAlmería(PSA).
Original languageEnglish
Pages (from-to)15-23
JournalMaterials Science in Semiconductor Processing
Volume42
Early online date31 Jul 2015
DOIs
Publication statusE-pub ahead of print - 31 Jul 2015

Keywords

  • Hydrogen
  • Solar photoreactors
  • Solar disinfection
  • Solar watertreatment

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