Cermola F, DellaGreca M, Iesce MR, Montella S, Pollio A, Temussi F. A mild photochemical approach to the degradation of phenols from olive oil mill wastewater.
CHEMOSPHERE 2004;
55:1035-1041. [PMID:
15051372 DOI:
10.1016/j.chemosphere.2003.12.016]
[Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2003] [Revised: 12/12/2003] [Accepted: 12/17/2003] [Indexed: 05/24/2023]
Abstract
Photooxidation of cathecol (1) is carried out in aqueous solution at lambda > 300 nm using different sensitizers: rose bengal (RB), 9,10-dicyanoanthracene (DCA), 2,4,6-triphenylpyrylium tetrafluoroborate (Pyryl). The highest degradation is observed in the UV/RB-sensitized reaction (66% after 15 h of irradiation), mineralization and formation of dimers are the final events. This procedure has been extended to tyrosol (2), caffeic acid (3), vanillic acid (4), 4-hydroxycinnamic acid (5) and 4-hydroxybenzoic acid (6) as well as to a mixture of all phenols. A reduced toxicity of the UV/RB-irradiated solutions of cathecol and tyrosol towards alga Ankistrodesmus braunii is also verified.
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