Degradation of Ceftriaxone Sodium in Pharmaceutical Wastewater by Photocatalytic Oxidation
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Tian Zhang, Li Zhang, Cuiping Ma
Titanium dioxide was used as photocatalyst, UV lamp and krypton lamp after reflection were used as UV and simulated light sources respectively. The photocatalytic decomposition of ceftriaxone sodium was tracked by UV spectrum. The effects of light source, amount of catalyst, light time, electron acceptor and other ions on the decomposition of photocatalyst were investigated. The results showed that the initial concentration of mercury was 500 mg/L, and the reaction speed was 2.5g/L and 2.0 g/L, respectively, under the condition of high pressure mercury lamp and reflector lamp for 5 hours. Ceftriaxone sodium has the highest decomposition effect, 93.4% and 73.8% respectively. Adding electron acceptors to the system can promote the reaction speed of photocatalyst, and the presence of inorganic ions such as , can significantly reduce the activity of Photocatalyst. The experimental results are useful for photocatalyst treatment of antibiotic pharmaceutical wastewater.
Ceftriaxone Sodium, Antibiotics, Titanium Dioxide, Photocatalytic Degradation