Journal
CHEMICAL PHYSICS LETTERS
Volume 739, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2019.136949
Keywords
Photolysis; Sulfadiazine; UV radiation
Funding
- Natural Science Foundation of China [41473071]
- High Level Talent Project of the Six Talents Summit of the Jiangsu Province [JNHB-008]
- College Major Project of the Natural Science Foundation of the Jiangsu Province [16KJA610001]
- Priority Academic Development Program of Jiangsu Province higher education institutions (Grants PAPD) [164320H116]
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The photolytic behaviour of sulfadiazine (SD) under ultraviolet (UV) radiation was investigated. The results showed that the SD photolysis fitted quasi-first-order kinetics model. The acid condition is favourable to the UV photolysis of SD because of more free radicals compared to the neutral and cationic conditions. NO3- inhibited the SD photolysis, which may be resulted from the competition of NO3- with SD for UV. Conversely, Cd2+ could promote the SD photolysis, because the metal ions reduce the reaction activation energy of the rate determining step. This research could serve as reference for SD photolysis contained in wastewater under UV radiation.
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