Journal
ENVIRONMENTAL TECHNOLOGY
Volume 31, Issue 14, Pages 1547-1555Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/09593331003789537
Keywords
sulphamethizole; SMZ; PCO; Langmuir-Hinshelwood kinetics; reaction pathway
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Funding
- Estonian Science Foundation [7541]
- United States Civilian Research and Development Foundation [US16062]
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Aqueous photocatalytic oxidation (PCO) of a non-biodegradable sulphonamide antibiotic sulfamethizole was studied. The impacts of photocatalyst dose, initial pH, and substrate concentration in the range from 1 to 100 mg L-1 were examined with a number of organic and inorganic by-products determined, suggesting the initial break-up of the SMZ molecule at the sulphonamide bond. The experiments were carried out under artificial near-UV and visible light, and solar radiation using Degussa P25 and less efficient visible light-sensitive C-doped titanium dioxide as photocatalysts.
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