ENVIRONMENTAL PROTECTION OF CHEMICAL INDUSTRY

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1 X703 A Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources Shangluo University Shangluo Shaanxi China 2. College of Civil Engineering Fuzhou University Fuzhou Fujian China 3. School of Chemistry and Chemical Engineering Tianjin University of Technology Tianjin China Abstract: The types of nano iron oxides and their adsorption activities for heavy metal are summarized. The common methods for preparation and modification of nano iron oxides are introduced and the key factors affecting the adsorption process of heavy metals are discussed. The research directions of nano iron oxides in water environment protection are prospected such as developing green and efficient process for nano iron oxides preparation investigating the effects of structure control and surface functionalization on adsorption activities of nano iron oxides and so on. Key words: nano iron oxide heavy metals wastewater adsorption aicuiling@163.com 2014SKY WK SKY-WK

2 1 O O O Wang. g Fe SO ml h Cr. mg/g Mou. mmol/l SnCl H O. ml Fe CO ml h Fe O γ As. mg/g 1 ph / min / mg g 1 Cr Cr Cd Cu γ Fe 2 O 3 Cr As V Pb 5.5~ Fe 3 O 4 SiO 2 Hg Fe 3 O 4 Cu Pb Fe O n Fe + n Fe + = ph ~ Fe + + Fe + + OH Fe O + H O. ~. μm Cui FeSO H O MnSO H O MnFe O Mn/Fe O Mn

3 . D Monte Fe SO H O γ Fe O Fe + Fe + O OH Pascal ~ nm Kumar 3 Hao Fe O MNP NH Cu + MNP NH Cu + NH MNP NH Cu + mg/g MNP NH +Cu + MNP NH Cu + Ugelstad. ~. mm Warner minmnso min KMnO hmn Mn Tang FeCl MgCl ml ml NaOH h hmg α Fe O As As mg/g. mg/g Yang FeSO Mg CH COO γ FeOOHγ Fe O γ Fe O Al NO H O Fe O AlO OH Pb Cr As... mg/g 4

4 ph ph ph ph ph ph ph Cr Cr ph ph ph HCrO ph ph Cr ~ Pb ~ min min Cr Cr mg/lph min Cr. min.~. mm. ~. mm Pb Pb 5

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6 Warner C L Chouyyok W Mackie K E et al. Manganese Doping of Magnetic Iron Oxide Nanoparticles Tailoring Surface Reactivity for a Regenerable Heavy Metal Sorbent J. Langmuir Tang Wenshu Su Yu Li Qi et al. Mg-Doping A Facile Approach to Impart Enhanced Arsenic Adsorption Performance and Easy Magnetic Separation Capability to α-fe 2 O 3 Nanoadsorbents J. J Mater Chem A Yang Xiulin Wang Xueyun Feng Yongqiang et al. Removal of Multifold Heavy Metal Contaminations in Drinking Water by Porous Magnetic Fe 2 O OH Superstructure J. J Mater Chem A C // Pb 2+ J CN /X ISSN /.. e mail hjjkyyj@.com..