...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Environmental Research and Public Health >Removal of Paracetamol Using Effective Advanced Oxidation Processes
【24h】

Removal of Paracetamol Using Effective Advanced Oxidation Processes

机译：使用有效的高级氧化工艺去除扑热息痛

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Fenton, photo-Fenton, and photo-induced oxidation, were investigated and compared for the treatment of 0.26 mmol L ?1 of paracetamol (PCT) in a deionised water matrix, during a reaction span of 120.0 min. Low and high Fenton reagent loads were studied. Particularly, the initial concentration of Fe 2+ was varied between 0.09 and 0.18 mmol L ?1 while the initial concentration of H 2 O 2 was varied between 2.78 and 11.12 mmol L ?1 . The quantitative performance of these treatments was evaluated by: (i) measuring PCT concentration; (ii) measuring and modelling TOC conversion, as a means characterizing sample mineralization; and (iii) measuring cytotoxicity to assess the safe application of each treatment. In all cases, organic matter mineralization was always partial, but PCT concentration fell below the detection limit within 2.5 and 20.0 min. The adopted semi-empirical model revealed that photo induced oxidation is the only treatment attaining total organic matter mineralization ( ξ MAX = 100% in 200.0 min) at the expense of the lowest kinetic constant (k = 0.007 min ?1 ). Conversely, photo-Fenton treatment using high Fenton reagent loads gave a compromise solution ( ξ MAX = 73% and k = 0.032 min ?1 ). Finally, cytotoxicity assays proved the safe application of photo-induced oxidation and of photo-Fenton treatments using high concentrations of Fenton reagents.
机译：研究了Fenton，光Fenton和光诱导的氧化，并比较了在120.0分钟的反应时间内在去离子水基质中处理0.26 mmol L？1的扑热息痛（PCT）。研究了Fenton试剂的低负荷和高负荷。特别地，Fe 2+的初始浓度在0.09至0.18mmol L -1之间变化，而H 2 O 2的初始浓度在2.78至11.12mmol L -1之间变化。通过以下方法评估这些处理的定量性能：（i）测量PCT浓度; （ii）测量和模拟TOC转化，作为表征样品矿化的手段; （iii）测量细胞毒性以评估每种治疗的安全性。在所有情况下，有机物矿化总是部分，但PCT浓度在2.5和20.0分钟内降至检测限以下。采用的半经验模型表明，光诱导氧化是唯一获得总有机物矿化（200.0 min内ξMAX = 100％）的方法，但其动力学常数最低（k = 0.007 min？1）。相反，使用高Fenton试剂负载的光Fenton处理给出了折衷解决方案（ξMAX = 73％，k = 0.032 min？1）。最后，细胞毒性试验证明了使用高浓度的Fenton试剂进行光诱导氧化和光Fenton处理的安全应用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号