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자료유형
학술저널
저자정보
Suh, Yong Jae (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources) Do, Thi May (Nanomaterials Science and Engineering, Korea University of Science and Technology) Kil, Dae Sup (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources) Jang, Hee Dong (Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resources) Cho, Kuk (Department of Environmental Engineering, Pusan National University)
저널정보
한국화학공학회 화학공학 화학공학 제53권 제1호
발행연도
2015.1
수록면
39 - 45 (7page)

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We produced magnetite nanoparticles (MNPs) and a Mg-rich solution as a nano-adsorbent and a coagulant for water treatment, respectively, using a low-grade iron ore. The ore was leached with aqueous hydrochloric acid and its impurities were removed by solvent extraction of the leachate using tri-n-butyl phosphate as an extractant. The content of Si and Mg, which inhibit the formation of MNPs, was reduced from 10.3 wt% and 15.5 wt% to 28.1 mg/L and < 1.4 mg/L, respectively. Consequently, the Fe content increased from 68.6 wt% to 99.8 wt%. The high-purity $Fe^{3+}$ solution recovered was used to prepare 5-15-nm MNPs by coprecipitation. The wastewater produced contained a large amount of $Mg^{2+}$ and can be used to precipitate struvite in sewage treatment. This process helps reduce the cost of both sewage and iron-orewastewater treatments, as well as in the economic production of the nano-adsorbent.

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