Degradation and toxicity assessment of sulfamethoxazole and chlortetracycline using electron beam, ozone and UV
Degradation and toxicity assessment of sulfamethoxazole and chlortetracycline using electron beam, ozone and UV
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DOI：
10.1016/j.jhazmat.2012.05.038
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发表时间：
2012-08-15
影响因子：
13.6
通讯作者：
Yu, Seungho
中科院分区：
文献类型：
--
作者：
Kim, Tae-Hun;Kim, Sang Don;Yu, Seungho
最近，抗生素在污水处理厂的污水以及饮用水中的出现，引起了人们对它们对环境和公众健康的潜在影响的关注。在地表水和地下沃茨中发现了抗生素，这表明传统的废水处理工艺无法有效去除抗生素。因此，高级氧化工艺（AOPs）在去除抗生素方面受到了相当大的关注。本研究旨在探讨抗生素（磺胺甲恶唑和金霉素）在电子束、臭氧和紫外线照射下的降解和矿化，以及毒性的变化。此外，基于EE/O参数（在1 m3废水中每一级污染物去除所需的电能）的电能消耗被用于量化与用于降解抗生素的不同AOP（电子束、臭氧和UV）相关的能量成本。结果表明，电子束对水溶液中磺胺甲恶唑和金霉素均有较好的去除效果。然而，臭氧和紫外线对目标化合物的降解表现出不同的趋势。每种有机化合物的氧化效率非常依赖于所使用的AOP。每次处理后，藻类毒性显着降低。但是，从电能的角度来看，电子束比臭氧和紫外线更有效。电子束处理可能是一种有效和安全的方法，用于去除抗生素化合物。(C)2012 Elsevier B. V.保留所有权利。
Recently, the occurrence of antibiotics in sewage treatment plant effluent, as well as drinking water, has raised concern about their potential impacts on the environment and public health. Antibiotics are found in surface and ground waters, which indicate their ineffective removal by conventional wastewater treatment processes. Therefore, advanced oxidation processes (AOPs) have received considerable attention for the removal of antibiotics. This study was conducted to evaluate the degradation and mineralization of antibiotics (sulfamethoxazole and chlortetracycline) using an electron beam, ozone and UV, and the change of toxicity. Also, the electrical energy consumption based on the EE/O parameter (the electrical energy required per order of pollutants removal in 1 m(3) wastewater) was used to quantify the energy cost associated with the different AOPs (electron beam, ozone and UV) for the degradation of antibiotics. The results showed that an electron beam effective for the removals of both sulfamethoxazole and chlortetracycline in aqueous solutions. However, degradation of the target compounds by ozone and UV showed different trends. The oxidation efficiency of each organic compound was very dependent upon the AOP used. Algal toxicity was significantly reduced after each treatment. However, based on the electrical energy, the electron beam was more efficient than ozone and UV. Electron beam treatment could be an effective and safe method for the removal of antibiotic compounds. (C) 2012 Elsevier B.V. All rights reserved.