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Preparation and characterization of zero valent iron powders via transfer type reductor using iron oxide from the acid regeneration process |
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| Authors: | Yong-Ick Cho Byung Hoon Kim Sun-Jae Kim Je-jung Yun Heon Lee Sung Hoon Park Sang-Chul Jung |
| Affiliation: | 1. LED Measurement & Test Technology Center, Korea Photonics Technology Institute, Gwangju 500-210, Republic of Korea;2. Dept. of Dental Materials, School of Dentistry, Chosun University, Gwangju 501-759, Republic of Korea;3. Faculty of Nanotechnology and Advanced Mater. Eng., Sejong University, Seoul 143-747, Republic of Korea;4. Nano Bio Research Center, Jangseong, Jeonnam 515-893, Republic of Korea;5. Dept. of Environmental Engineering, Sunchon National University, Sunchon 540-742, Republic of Korea |
| Abstract: | In this study, zero valent iron (ZVI) powders were generated by reducing iron oxide powders obtained from a pickling line in a transfer type reductor. The physical and chemical characteristic of the produced ZVI powders were analyzed by using instruments. Reaction activities of ZVI powders for decomposition of a methylene blue were evaluated. The mean size of ZVI powders increased and the specific surface area decreased with increasing reduction temperature due to sintering. The methylene blue decomposition rate increased with dose of ZVI powders. The ZVI powders generated by reducing iron oxide showed higher decomposition efficiencies than the commercial ZVI powders at all pH values tested in this study. Both non-commercial ZVIs showed a higher decomposition rate at a lower pH. |
| Keywords: | Zero valent iron Iron oxide Transfer type reductor Specific surface area pH |
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