摘要
左氧氟沙星(Levofloxacin,LEVO)是目前应用最广泛的喹诺酮类药物之一,其在多种环境基质中被频繁检出,对生态系统和人类健康造成潜在危害。采用Fenton试剂(H2O2-Fe2+)氧化降解水中LEVO,通过正交试验初步筛选出适宜的反应条件并针对各影响因素分别开展深入研究。实验结果表明,选定的4个因素对Fenton试剂降解LEVO的影响权重,从大到小依次为:Fe2+的初始浓度、反应时间、H2O2的初始浓度、初始pH值。当选取反应条件pH=6,H2O2和Fe2+初始浓度分别为0.75 mmol/L和150μmol/L时,处理初始浓度为50μmol/L的LEVO溶液60 s,LEVO的去除率达到96.5%,说明Fenton试剂可有效去除水溶液中的LEVO。该研究为处理含LEVO等难生物降解的有机物废水提供了一定的理论和数据支持。
The degradation of Levofloxacin （LEVO） by Fenton treatment is investigated. To obtain the best reaction conditions （ reaction time, the initial concentration of Fe2 ＋ and H2 02, and pH）, orthogonal test and a series of experiments on the effects of each influencing factor were conducted. Operating at pH = 6, [H2 02 ] 0 = 0. 75 mmol/ L, [ Fe2＋ ]0 = 150 μmol/L, 96. showed that Fenton treatment can 5% of LEVO was removed after 60-sec of treatment. The experimental results effectively eliminate LEVO from aquatic solution.
出处
《科学技术与工程》
北大核心
2014年第18期316-319,共4页
Science Technology and Engineering
