- Oxidative Degradation of Phenol Using Zero-Valent Iron-Based Fenton-Like Systems
- Kim, Hak-Hyeon;Lee, Hye-Jin;Kim, Hyung-Eun;Lee, Hongshin;Lee, Byeong-Dae;Lee, Changha;
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST);School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST);School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST);School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST);Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources (KIGAM);School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST);
- 영가철 기반 펜톤 시스템을 활용한 페놀의 산화분해
- 김학현;이혜진;김형은;이홍신;이병대;이창하;
- 울산과학기술대학교 도시환경공학부;울산과학기술대학교 도시환경공학부;울산과학기술대학교 도시환경공학부;울산과학기술대학교 도시환경공학부;한국지질자원연구원 지구환경연구본부;울산과학기술대학교 도시환경공학부;
Abstract
For the last couple of decades, the Fenton (-like) systems have been extensively studied for oxidation of organic contaminants in water. Recently, zero-valent iron (ZVI) has received attention as a Fenton catalyst as well as a reducing agent capable of producing reactive oxidants from oxygen. In this study, the ZVI-based Fenton reaction was assessed for the oxidative degradation of phenol using $ZVI/O_2$ , $ZVI/H_2O_2$ , ZVI/Oxalate/$O_2$ and hv/ZVI/Oxalate/$O_2$ systems. Reaction parameters such as pH and reagent dose (e.g., ZVI, $H_2O_2$ , and oxalate) were examined. In the presence of oxalate (ZVI/Oxalate/$O_2$ and hv/ZVI/Oxalate/$O_2$ systems), the degradation of phenol was greatly enhanced at neutral pH values. It was found that ZVI accelerates the Fenton reaction by reducing Fe(III) into Fe(II). The conversion of Fe(III) into Fe(II) by ZVI was more stimulated at acidic pH than at near-neutral pH values.
Keywords: Advanced oxidation process;Fenton reaction;Zero-valent iron;Hydroxyl radical;Phenol oxidation;
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