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磷在磁铁矿-针铁矿混合相上的吸附

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邵鹏辉, 唐朝春, 简美鹏, 余荷根. 磷在磁铁矿-针铁矿混合相上的吸附[J]. 环境工程学报, 2013, 7(9): 3433-3438.
引用本文: 邵鹏辉, 唐朝春, 简美鹏, 余荷根. 磷在磁铁矿-针铁矿混合相上的吸附[J]. 环境工程学报, 2013, 7(9): 3433-3438.
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Shao Penghui, Tang Chaochun, Jian Meipeng, Yu Hegen. Adsorption of phosphorus from aqueous solution on magnetite-goethite mix phase[J]. Chinese Journal of Environmental Engineering, 2013, 7(9): 3433-3438.
Citation: Shao Penghui, Tang Chaochun, Jian Meipeng, Yu Hegen. Adsorption of phosphorus from aqueous solution on magnetite-goethite mix phase[J]. Chinese Journal of Environmental Engineering, 2013, 7(9): 3433-3438.
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磷在磁铁矿-针铁矿混合相上的吸附

  • 1.

    华东交通大学土木建筑学院, 南昌 330013

  • 基金项目:

    江西省教育厅科技项目(赣教技字[2007]194号)

    江西省科技厅支撑计划项目(2009AE01601)

  • 中图分类号: X52

Adsorption of phosphorus from aqueous solution on magnetite-goethite mix phase

  • 1.

    School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang 330013, China

  • Fund Project:

  • 摘要: 首次采用使用后贴式取暖物(商业名:热力贴)为原料制备吸附剂,元素分析、XRD、红外图谱综合鉴定为磁铁矿-针铁矿混合相(magnetite-goethite mix phase,MGM),其比表面积为98.3 m2/g,平均粒径为510 nm,零电荷点在pH=5.7附近;磷在MGM上的吸附等温线符合Langmuir方程,其吸附历时曲线遵循准二级动力学模型,升温能促进磷的吸附;在实际废水磷浓度为51.8 mg/L、初始溶液pH=2的条件下,当MGM投加量为10 g/L时,磷的去除率为94.16%。
    Abstract: In this study, an adsorbent was first prepared from used hot pack. The adsorbent was confirmed to be magnetite-goethite mix phase (MGM) by XRD, FTIR and elemental analysis. BET surface area, average diameter and point of zero charge were 98.3 m2/g, 510 nm, and pH 5.7, respectively. The adsorption isotherms of phosphorus fit Langmuir equation well, and the time-resolved curves of phosphorus adsorption on MGM follows pseudo-second-order kinetic model. With the increase of temperature, the adsorption of phosphorus was promoted. A removal rate of 94.16% was observed at the dosage of 10 g/L when the initial phosphate concentration in sewage (pH 2.0) was 51.8 mg/L.
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  • 收稿日期:  2012-08-03
  • 刊出日期:  2013-09-15

磷在磁铁矿-针铁矿混合相上的吸附

  • 1. 华东交通大学土木建筑学院, 南昌 330013
  • 收稿日期:  2012-08-03
基金项目:

江西省教育厅科技项目(赣教技字[2007]194号)

江西省科技厅支撑计划项目(2009AE01601)

摘要: 首次采用使用后贴式取暖物(商业名:热力贴)为原料制备吸附剂,元素分析、XRD、红外图谱综合鉴定为磁铁矿-针铁矿混合相(magnetite-goethite mix phase,MGM),其比表面积为98.3 m2/g,平均粒径为510 nm,零电荷点在pH=5.7附近;磷在MGM上的吸附等温线符合Langmuir方程,其吸附历时曲线遵循准二级动力学模型,升温能促进磷的吸附;在实际废水磷浓度为51.8 mg/L、初始溶液pH=2的条件下,当MGM投加量为10 g/L时,磷的去除率为94.16%。

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