2010 Volume 4 Issue 7
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Zhao Liangjie, Liu Mingda, Wang Yaojing, Zhou Chongjun. Adsorption of lead from wastewater by blast-furnace slag[J]. Chinese Journal of Environmental Engineering, 2010, 4(7): 1473-1477.
Citation: Zhao Liangjie, Liu Mingda, Wang Yaojing, Zhou Chongjun. Adsorption of lead from wastewater by blast-furnace slag[J]. Chinese Journal of Environmental Engineering, 2010, 4(7): 1473-1477.
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Adsorption of lead from wastewater by blast-furnace slag

  • 1.

    College of Land and Environmental Sciences, Shenyang Agricultural University,Shenyang 110866,China

  • 2.

    College of Science, Shenyang Agricultural University, Shenyang 110866,China

  • Received Date: 20/03/2010
    Accepted Date: 28/11/2009
    Fund Project:
  • The adsorption mechanism of lead by blastfurnace slag (BFS) was studied, both the infrared spectroscopy and X-ray diffraction were used to analyse the changes of the patterns before and after adsorption, the thermodynamic characteristic was investigated using the adsorption isotherm experiment. The results showed that the time for equilibrium in the adsorption was 120 min and the Freundlich equation was optimal to simulate the adsorption of lead. The adsorption capacity at equilibrium decreased with the increased temperature and the Gibbs free angey changes (ΔG0) were negative,which indicated that the adsorption of lead by BFS was an exothermic and spontaneous process. Two adsorption bands appeared at 980～1 100 cm-1 and around 515 cm-1, some new diffraction peaks appeared at around 25° and 35° 2θ,which suggested that the adsorption of lead is mainly due to the site of Si—O—Si in the blastfurnace slag.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Adsorption of lead from wastewater by blast-furnace slag

  • Received Date: 20/03/2010
  • Accepted Date: 28/11/2009
Fund Project:

Abstract: The adsorption mechanism of lead by blastfurnace slag (BFS) was studied, both the infrared spectroscopy and X-ray diffraction were used to analyse the changes of the patterns before and after adsorption, the thermodynamic characteristic was investigated using the adsorption isotherm experiment. The results showed that the time for equilibrium in the adsorption was 120 min and the Freundlich equation was optimal to simulate the adsorption of lead. The adsorption capacity at equilibrium decreased with the increased temperature and the Gibbs free angey changes (ΔG0) were negative,which indicated that the adsorption of lead by BFS was an exothermic and spontaneous process. Two adsorption bands appeared at 980～1 100 cm-1 and around 515 cm-1, some new diffraction peaks appeared at around 25° and 35° 2θ,which suggested that the adsorption of lead is mainly due to the site of Si—O—Si in the blastfurnace slag.

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