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纳米铁的制备及去除废水中的Cr(Ⅵ)

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张显龙, 张思阳, 冯婧微. 纳米铁的制备及去除废水中的Cr(Ⅵ)[J]. 环境工程学报, 2012, 6(9): 3167-3172.
引用本文: 张显龙, 张思阳, 冯婧微. 纳米铁的制备及去除废水中的Cr(Ⅵ)[J]. 环境工程学报, 2012, 6(9): 3167-3172.
shu
Zhang Xianlong, Zhang Siyang, Feng Jingwei. Preparation of nano-iron for removing Cr(Ⅵ)from wastewaters[J]. Chinese Journal of Environmental Engineering, 2012, 6(9): 3167-3172.
Citation: Zhang Xianlong, Zhang Siyang, Feng Jingwei. Preparation of nano-iron for removing Cr(Ⅵ)from wastewaters[J]. Chinese Journal of Environmental Engineering, 2012, 6(9): 3167-3172.
shu

纳米铁的制备及去除废水中的Cr(Ⅵ)

  • 1.

    沈阳化工大学环境与生物工程学院,沈阳 110142

  • 基金项目:

  • 中图分类号: X703.1

Preparation of nano-iron for removing Cr(Ⅵ)from wastewaters

  • 1.

    College of Environment and Biological Engineering, Shenyang University of Chemical Technology, Shenyang 110142,China

  • Fund Project:

摘要

  • 摘要: 铬离子(Ⅵ)是水体、土壤中的一类重要污染物, 对人体及其他动物有毒害和致癌作用。主要来源于采矿、冶金和电镀等工业排放的废水。为了寻求一种更好的铬离子(Ⅵ)处理方法,实验以三价铁盐为原料,制备了一种具有高比表面积和高反应活性的新型水处理剂——纳米铁,其广泛的应用于难降解的氯代有机物、重金属离子和染料等的处理以及对受污染地下水的原位修复等领域,通过其对六价铬离子的吸附与还原过程的研究。提出了最佳去除条件:即当投加量为0.02 g/L,pH为8,温度为30℃时,纳米铁对六价铬离子的去除效果最好,去除率大于90%。
    Abstract: Chromium (Ⅵ) is a major pollutant in water and soil, which comes from industrial wastewater of mining, metallurgy and electroplating, etc. It is toxic and carcinogenic to human beings and other animals. In order to seek a better treatment method of chromium (Ⅵ) wastewater, a new type treating agent, nano-iron, was prepared using trivalent iron as raw materials, which possessed high specific surface area and surface reactivity. Nano-iron has been widely applied not only in the treatment of refractory chloro-organics, heavy metals and dye wastewater, but also in groundwater remediation in situ. In addition, the absorption and reduction of chromium(Ⅵ) in wastewater with nano-iron were investigated. The removal rate of chromium is over 90% under the optimal conditions of 0.02 g/L dosage, pH=8 and 30℃.
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  • 收稿日期:  2010-12-17
  • 刊出日期:  2012-09-14
张显龙, 张思阳, 冯婧微. 纳米铁的制备及去除废水中的Cr(Ⅵ)[J]. 环境工程学报, 2012, 6(9): 3167-3172.
引用本文: 张显龙, 张思阳, 冯婧微. 纳米铁的制备及去除废水中的Cr(Ⅵ)[J]. 环境工程学报, 2012, 6(9): 3167-3172.
shu
Zhang Xianlong, Zhang Siyang, Feng Jingwei. Preparation of nano-iron for removing Cr(Ⅵ)from wastewaters[J]. Chinese Journal of Environmental Engineering, 2012, 6(9): 3167-3172.
Citation: Zhang Xianlong, Zhang Siyang, Feng Jingwei. Preparation of nano-iron for removing Cr(Ⅵ)from wastewaters[J]. Chinese Journal of Environmental Engineering, 2012, 6(9): 3167-3172.
shu

纳米铁的制备及去除废水中的Cr(Ⅵ)

  • 1. 沈阳化工大学环境与生物工程学院,沈阳 110142
  • 收稿日期:  2010-12-17
基金项目:

摘要: 铬离子(Ⅵ)是水体、土壤中的一类重要污染物, 对人体及其他动物有毒害和致癌作用。主要来源于采矿、冶金和电镀等工业排放的废水。为了寻求一种更好的铬离子(Ⅵ)处理方法,实验以三价铁盐为原料,制备了一种具有高比表面积和高反应活性的新型水处理剂——纳米铁,其广泛的应用于难降解的氯代有机物、重金属离子和染料等的处理以及对受污染地下水的原位修复等领域,通过其对六价铬离子的吸附与还原过程的研究。提出了最佳去除条件:即当投加量为0.02 g/L,pH为8,温度为30℃时,纳米铁对六价铬离子的去除效果最好,去除率大于90%。

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