Publication Date:
2018-11-06
Description:
Photodegradation of sulfadiazine (SD), a typical sulfonamide antibiotic (SA) frequently detected in the aquatic environment, under UVA irradiation enhanced by molecular iodine was investigated. Herein, molecular iodine I 2 and coexisting I 3 − were provided by hydrogen peroxide and potassium iodide in acidic solution. During the treatment, highly reactive iodine radicals (I·, I 2 − ), produced by UVA photolytic activation of both I 2 and I 3 − , were verified as the dominated oxidant species against the decomposition of SD in aqueous solution. Besides, SD removal was found to be affected by the initial pH value, KI and H 2 O 2 added concentrations.
Print ISSN:
1755-1307
Electronic ISSN:
1755-1315
Topics:
Geography
,
Geosciences
,
Physics
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