https://scholars.lib.ntu.edu.tw/handle/123456789/576965
標題: | Solar photo-Fenton oxidation of cytostatic drugs via Fe(III)-EDDS at circumneutral pH in an aqueous environment | 作者: | Lin H.H.-H ANGELA YU-CHEN LIN |
公開日期: | 2021 | 卷: | 41 | 來源出版物: | Journal of Water Process Engineering | 摘要: | Cytostatic drugs have been widely and increasingly used and are poorly biodegraded in wastewater treatment plants, so they are commonly found in wastewater effluents. This study applied a solar photo-Fenton process to remove cyclophosphamide and 5-fluorouracil. The complex Fe(III)-ethylenediamine-N,N’-disuccinic (EDDS) degraded cyclophosphamide and 5-fluorouracil more efficiently than three other Fe(III)-ligand complexes under ultraviolet (UV) and solar light irradiation. Fe(III)-EDDS also showed higher photoreactivity under solar light than under UV light. Cyclophosphamide and 5-fluorouracil showed increasing degradation with increasing Fe(III)-EDDS concentration and H2O2 dosage. The addition of EDDS can widen the operational pH range of the solar photo-Fenton process to pH 3.0?8.5. A suitable Fe(III):EDDS ratio and initial dissolved oxygen level were demonstrated to affect the degradation performance. Cyclophosphamide and 5-fluorouracil were rapidly degraded within 1.5 min (k = 5.131 and 5.407 min?1, respectively) in the solar photo-Fenton process with the concentration of 0.1 mM Fe(III)-EDDS and 1 mM H2O2, and detoxification throughout the process was also ensured. In addition, this study is the first to combine the UV/H2O2 process with the solar photo-Fenton process to achieve the goal of total mineralization. For engineering purposes, this solar photo-Fenton process with a relatively low Fe(III) concentration and H2O2 dosage provides a promising potential alternative method for wastewater treatment under natural pH conditions with solar light. ? 2021 Elsevier Ltd |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104086296&doi=10.1016%2fj.jwpe.2021.102066&partnerID=40&md5=e63a125423ade3005b5eb324c962ba91 https://scholars.lib.ntu.edu.tw/handle/123456789/576965 |
ISSN: | 22147144 | DOI: | 10.1016/j.jwpe.2021.102066 |
顯示於: | 環境工程學研究所 |
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