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在水中通过紫外线/碳酸 (UV/SPC) 的高级氧化过程去除四环素

Liangyu Zhao¹, Yang-Guo Zhao², Chunji Jin²

¹Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering (MEGE), College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China.

Environmental research

|January 25, 2024

概括

一种新的紫外线/碳酸 (UV/SPC) 先进的氧化过程有效地从水中去除四环素 (TC). 这种UV/SPC方法在各种pH水平上显示出高效率和适应性,为抗生素污染提供了有希望的解决方案.

科学领域:

环境化学环境化学
水处理技术水处理技术
先进的氧化过程先进的氧化过程

背景情况:

环素 (TC) 是一种广泛使用的抗生素,经常在水生环境中检测到.
存在的TC对水生生物构成重大威胁,并且通过常规的生物处理很少降解.
需要有效的方法来加强从水体中去除TC.

研究的目的:

为了研究一种新的紫外线/碳酸 (UV/SPC) 先进的氧化工艺对四环素去除的疗效.
为了确定关键参数的影响,如氧化剂剂量,pH值,紫外线强度和TC度在去除效率上.
探索水矩阵组件的影响,并确定参与TC降解的反应性物种.

主要方法:

使用了利用紫外线 (UV) 光和碳酸 (SPC) 的先进氧化工艺.
该研究系统地改变了SPC剂量,初始pH值,紫外线强度和TC度.
评估了常见水矩阵离子 (HCO₃^-,NO₃^-) 的影响,检测和量化了自由基物种.

主要成果:

紫外线/SPC系统证明了有效的TC去除,效率随着SPC度的增加而增加.
该工艺在广泛的pH范围 (3-11) 中表现出强大的性能,表明强大的适应性.
二碳酸盐离子 (HCO-) 抑制了TC降解,而酸盐离子 (NO-) 促进了降解. 发现基基 (·OH) 在TC降解中比碳酸盐基 (·CO₃^-) 更有效.

结论:

紫外线/SPC高级氧化过程是一种新且有效的策略,用于从水中去除四环素.
该系统具有出色的pH适应性,其效率受水矩阵组成的影响.
了解不同反应性物种的作用,包括CO3的重要贡献,对于优化抗生素去除过程至关重要.

关键词:

降解速度的降解速度自由激进分子的自由激进分子碳酸是碳酸中的一种.环素四环素的使用方法紫外线是紫外线中的一种.

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