Removal of Di (2-ethylhexyl) phthalate from groundwater by sodium persulfate activated by hollow micron zero-valent iron: Reaction mechanism and degradation path
In this study, hollow micron zero-valent iron (H-mZVI) was prepared using the ethylenediamine liquid phase reduction method. The microstructures were characterized by SEM, XRD, BET and FTIR. The results showed that H-mZVI possessed a spherical hollow structure with a particle size of approximately 1...
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Elsevier
2025-01-01
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| Series: | Ecotoxicology and Environmental Safety |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651325000569 |
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| author | Chunyang Gao Bing Wang Jingjing Zhao Jvfeng Li Xianyuan Du Jin Zheng Quanwei Song Jiacai Xie |
| author_facet | Chunyang Gao Bing Wang Jingjing Zhao Jvfeng Li Xianyuan Du Jin Zheng Quanwei Song Jiacai Xie |
| author_sort | Chunyang Gao |
| collection | DOAJ |
| description | In this study, hollow micron zero-valent iron (H-mZVI) was prepared using the ethylenediamine liquid phase reduction method. The microstructures were characterized by SEM, XRD, BET and FTIR. The results showed that H-mZVI possessed a spherical hollow structure with a particle size of approximately 1 μm. The density of H-mZVI was notably lower compared to solid micron zero-valent iron (S-mZVI). Furthermore, with an increase in ethylenediamine addition, the density initially decreased before stabilizing. Results demonstrated that the degradation efficiency of H-mZVI/PS for DEHP was 2.96 times higher than that of S-mZVI/PS. The charge density of H-mZVI/PS degradation DEHP system was higher than that of S-mZVI/PS system, and H-mZVI exhibited a fast electron migration rate and strong electron transport ability between the solution and the interface material. The degradation of DEHP by H-mZVI/PS system was carried out jointly by the surface reaction on the surface of H-mZVI particles and the homolytic reaction led by Fe2+ ions in the solution. Additionally, the contribution rate of free radicals in the degradation process of DEHP was in the order SO4-· > ·OH > 1O2. There were three degradation pathways of DEHP in H-mZVI/PS system, and the toxicity of DEHP degradation products was significantly lower than that of the parent. |
| format | Article |
| id | doaj-art-034bdbe4162842a88997bf05529b9666 |
| institution | Kabale University |
| issn | 0147-6513 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
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| series | Ecotoxicology and Environmental Safety |
| spelling | doaj-art-034bdbe4162842a88997bf05529b96662025-02-12T05:30:04ZengElsevierEcotoxicology and Environmental Safety0147-65132025-01-01290117720Removal of Di (2-ethylhexyl) phthalate from groundwater by sodium persulfate activated by hollow micron zero-valent iron: Reaction mechanism and degradation pathChunyang Gao0Bing Wang1Jingjing Zhao2Jvfeng Li3Xianyuan Du4Jin Zheng5Quanwei Song6Jiacai Xie7State Key Laboratory of Petroleum Pollution Control, Beijing 102206, PR China; CNPC Research Institute of Safety and Environmental Technology, Beijing 102206, PR ChinaSchool of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, PR ChinaPetro China Southwest Oil & Gasfield Company, Chengdu 610017, PR ChinaState Key Laboratory of Petroleum Pollution Control, Beijing 102206, PR China; CNPC Research Institute of Safety and Environmental Technology, Beijing 102206, PR China; Corresponding author at: State Key Laboratory of Petroleum Pollution Control, Beijing 102206, PR China.State Key Laboratory of Petroleum Pollution Control, Beijing 102206, PR China; CNPC Research Institute of Safety and Environmental Technology, Beijing 102206, PR ChinaState Key Laboratory of Petroleum Pollution Control, Beijing 102206, PR China; CNPC Research Institute of Safety and Environmental Technology, Beijing 102206, PR ChinaState Key Laboratory of Petroleum Pollution Control, Beijing 102206, PR China; CNPC Research Institute of Safety and Environmental Technology, Beijing 102206, PR ChinaState Key Laboratory of Petroleum Pollution Control, Beijing 102206, PR China; CNPC Research Institute of Safety and Environmental Technology, Beijing 102206, PR ChinaIn this study, hollow micron zero-valent iron (H-mZVI) was prepared using the ethylenediamine liquid phase reduction method. The microstructures were characterized by SEM, XRD, BET and FTIR. The results showed that H-mZVI possessed a spherical hollow structure with a particle size of approximately 1 μm. The density of H-mZVI was notably lower compared to solid micron zero-valent iron (S-mZVI). Furthermore, with an increase in ethylenediamine addition, the density initially decreased before stabilizing. Results demonstrated that the degradation efficiency of H-mZVI/PS for DEHP was 2.96 times higher than that of S-mZVI/PS. The charge density of H-mZVI/PS degradation DEHP system was higher than that of S-mZVI/PS system, and H-mZVI exhibited a fast electron migration rate and strong electron transport ability between the solution and the interface material. The degradation of DEHP by H-mZVI/PS system was carried out jointly by the surface reaction on the surface of H-mZVI particles and the homolytic reaction led by Fe2+ ions in the solution. Additionally, the contribution rate of free radicals in the degradation process of DEHP was in the order SO4-· > ·OH > 1O2. There were three degradation pathways of DEHP in H-mZVI/PS system, and the toxicity of DEHP degradation products was significantly lower than that of the parent.http://www.sciencedirect.com/science/article/pii/S0147651325000569Hollow micron zero-valent ironPersulfateDi (2-ethylhexyl) phthalateGroundwaterElectron transfer |
| spellingShingle | Chunyang Gao Bing Wang Jingjing Zhao Jvfeng Li Xianyuan Du Jin Zheng Quanwei Song Jiacai Xie Removal of Di (2-ethylhexyl) phthalate from groundwater by sodium persulfate activated by hollow micron zero-valent iron: Reaction mechanism and degradation path Ecotoxicology and Environmental Safety Hollow micron zero-valent iron Persulfate Di (2-ethylhexyl) phthalate Groundwater Electron transfer |
| title | Removal of Di (2-ethylhexyl) phthalate from groundwater by sodium persulfate activated by hollow micron zero-valent iron: Reaction mechanism and degradation path |
| title_full | Removal of Di (2-ethylhexyl) phthalate from groundwater by sodium persulfate activated by hollow micron zero-valent iron: Reaction mechanism and degradation path |
| title_fullStr | Removal of Di (2-ethylhexyl) phthalate from groundwater by sodium persulfate activated by hollow micron zero-valent iron: Reaction mechanism and degradation path |
| title_full_unstemmed | Removal of Di (2-ethylhexyl) phthalate from groundwater by sodium persulfate activated by hollow micron zero-valent iron: Reaction mechanism and degradation path |
| title_short | Removal of Di (2-ethylhexyl) phthalate from groundwater by sodium persulfate activated by hollow micron zero-valent iron: Reaction mechanism and degradation path |
| title_sort | removal of di 2 ethylhexyl phthalate from groundwater by sodium persulfate activated by hollow micron zero valent iron reaction mechanism and degradation path |
| topic | Hollow micron zero-valent iron Persulfate Di (2-ethylhexyl) phthalate Groundwater Electron transfer |
| url | http://www.sciencedirect.com/science/article/pii/S0147651325000569 |
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