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›› 2011, Vol. 11 ›› Issue (4): 684-688.

• 材料工程专栏 • 上一篇    下一篇

磁性多孔Fe(OH)3微球制备及其在含磷废水处理中的应用

石中亮 宋永强 郭星 谢彩月 姚淑华   

  1. 沈阳化工学院无机化学教研室 沈阳化工大学 应用化学学院 沈阳化工大学 应用化学学院 沈阳化工大学 应用化学学院 沈阳化工大学 应用化学学院
  • 收稿日期:2011-04-19 修回日期:2011-07-11 出版日期:2011-08-20 发布日期:2011-08-20
  • 通讯作者: 石中亮

Preparation and Application of Magnetic Fe(OH)3 Porous Microspheres in Treatment of Wastewater Containing Phosphorus

SHI Zhong-liang SONG Yong-qiang GUO Xing XIE Cai-yue YAO Shu-hua   

  1. Applied Chemistry College Shenyang Institute of Chemical Technology School of Applied Chemistry, Shenyang University of Chemical Technology School of Applied Chemistry, Shenyang University of Chemical Technology School of Applied Chemistry, Shenyang University of Chemical Technology School of Applied Chemistry, Shenyang University of Chemical Technology
  • Received:2011-04-19 Revised:2011-07-11 Online:2011-08-20 Published:2011-08-20
  • Contact: SHI Zhong-liang

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摘要： 利用诱导成球法制备磁性Fe3O4粒子为核的Fe(OH)3多孔微球，以X射线衍射(XRD)和扫描电镜(SEM)等对其进行结构表征，采用静态吸附法对磁性多孔微球去除水中H2PO4-的性能进行了实验研究，考察了吸附剂用量、H2PO4-初始浓度、溶液pH值等因素对吸附的影响，分析了其吸附等温线及对H2PO4-的吸附动力学. 结果表明，Langmuir方程能较好地描述吸附平衡，其吸附动力学符合Lagergren二级方程. 磁性多孔微球对H2PO4-有很强的去除能力，在吸附剂用量0.8 g/L，pH 2.5~9，吸附时间150 min的条件下，磁性多孔微球对H2PO4-的去除率可达98%以上.

关键词: 四氧化三铁, 氢氧化铁, 磷, 共沉淀法, 磁性多孔微球

Abstract: A composite adsorbent of magnetic Fe(OH)3 porous microspheres with Fe3O4 core was prepared, and characterized. The characteristics of phosphate adsorption on magnetic Fe(OH)3 porous microspheres were investigated. The influential factors such as the dosage of adsorbent, initial concentration of H2PO4?, solution pH value, co-existing anions in solution on removal of H2PO4? were examined. The adsorption isotherm of phosphate on porous microspheres could be described by Langmuir equation, and the adsorption kinetic data described by Lagergren second-order rate equation. The adsorbent had perfect properties in H2PO4? adsorption capacity, the removal rate of H2PO4? could be over 98% in the conditions of adsorbent dosage 0.8 g/L, and pH=2.5~9, adsorption time 150 min.

Key words: Fe3O4, Fe(OH)3, phosphorus, co-precipitation, magnetic porous microspheres

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