Decontamination and disinfection of water by solar photocatalysis: Recent overview and trends

S. Malato, P Fernandez Ibanez, M.I. Maldonado, J. Blanco, W. Gernjak

Research output: Contribution to journalArticle

1767 Citations (Scopus)

Abstract

In recent years, there has been a tremendous amount of research and development in the area of photocatalysis (heterogeneous and homogeneous), a process included in a special class of oxidation techniques defined as Advanced Oxidation Processes (AOPs), all characterized by the same chemical feature, production of OH radicals. This paper reviews the use of sunlight to produce the OH radicals by TiO2 photocatalysis and photo-Fenton process. The reacting systems necessary for performing solar photocatalysis are described. The paper also summarizes most of the research carried out related to solar photocatalytic degradation of water contaminants, and how it could significantly contribute to the treatment of persistent toxic compounds. It outlines how to enhance the process efficiency by integration with biotreatment. Various solar reactors for photocatalytic water treatment mainly based on non-concentrating collectors built during the last few years are also described in detail in this review, as well as the use of the solar photocatalytic processes to inactivate microorganisms present in water, placing special emphasis on experimental systems made to optimize this disinfection technique.
Original languageEnglish
Pages (from-to)1-59
JournalCatalysis Today
Volume147
Issue number1
Early online date3 Aug 2009
DOIs
Publication statusE-pub ahead of print - 3 Aug 2009

Keywords

  • Heterogeneous photocatalysis
  • Photo-Fenton
  • Solar disinfection
  • Solar water treatment

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