氧氟沙星電氧化之研究

Electro-oxidation of Ofloxacin

陳育萱(Yu-Xuan Chen)

指導教授 ： 黃國林

國立屏東科技大學/工學院/環境工程與科學系所/碩士(2011年)

https://doi.org/10.6346/NPUST.2011.00141

摘要

氧氟沙星(Ofloxacin)是一種人工合成的抗生素，為常使用之藥物，屬於環境新興污染物之一，值得注意，而其降解值得研究探討。
本研究利用電化學方法氧化降解氧氟沙星。實驗結果顯示，使用單槽及雙槽，對氧氟沙星之電氧化均為白金優於鈦鍍白金。輔助氧氟沙星電化學降解之陰極，使用雙槽時，是不鏽鋼優於鈦電極，但使用單槽時，則情形相反；分隔膜材料以AMI-7001為最佳，Nafion○R 212為次之，Nafion○R 117為最差。溫度(30~70°C)對氧氟沙星電氧化效率影響不顯著。氧氟沙星之電氧化效率隨電流(0.3~1.0 A)或陽極面積(2~6 cm2)之增加而上升。在0.5 M Na2SO¬¬4、0.25 M H2SO¬¬4+0.25 M Na2SO¬¬4及0.5 M H2SO¬¬4溶液中，氧氟沙星之電氧化效率相似。在0.5 M H2SO¬¬4+0.1 M Na2SO¬¬4、0.5 M H2SO¬¬4+0.3 M Na2SO¬¬4及0.5 M H2SO¬¬4+0.5 M Na2SO¬¬4溶液中亦如此。在0.5 M Na2SO¬¬4溶液中，氧氟沙星電氧化效率隨添加NaOH濃度之增加(0.01~0.5 M)而上升。氧氟沙星之電氧化效率隨其初始濃度之增加(50~1000ppm)而降低。

關鍵字：氧氟沙星(Ofloxacin)、電氧化、新興汙染物

關鍵字

氧氟沙星 ； 電氧化 ； 新興汙染物

並列摘要

The Contents of Abstract in This Thesis:
Ofloxacin, a commonly used synthetic antibiotic, is one of emerging contaminants with environmental concerns that are worth studying.
This study focuses on the degradation of ofloxacin using electrochemical oxidation. The results showed that the electro-oxidation of ofloxacin was better for a platinum electrode than for a platinized titanium in a divided cell and an undivided one. In the divided cell, the electro-oxidation of ofloxacin was better when a titanium plate cathode was replaced with a stainless steel electrode; however, an opposite trend was found in the undivided cell. For the divided cell with different separators, the electro-oxidation of ofloxacin was in order AMI -7001 > Nafion○R212 > Nafion○R117. The influence of temperature (30–70oC) on the electro-oxidation of ofloxacin was slight; The electro-oxidation of ofloxacin increased as the increase of electric current (0.3–1.0 A) or anode area (2–6 cm2). The electro-oxidation efficiencies of ofloxacin were similar in 0.5 M Na2SO¬¬4, 0.25 M H2SO¬-4+0.25 M Na2SO¬¬4, and 0.5 M H2SO¬¬4; this is also true in 0.5 M H2SO¬¬4+0.1 M Na2SO¬¬4, 0.5 M H2SO¬¬4+0.3 M Na2SO¬¬4, and 0.5 M H2SO¬¬4+0.5 M Na2SO¬¬4. In 0.5 M Na2SO¬¬4, The electro-oxidation of ofloxacin increased with the increase of NaOH concentration (0.01–0.5 M) or the decrease of initial ofloxacin concentration (50–1000 ppm).

Keywords: Ofloxacin, Electro-oxidation, Emerging contaminants

並列關鍵字

Ofloxacin ； Electro-oxidation ； Emerging contaminants

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