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Separating method and dynamic processes of Nano-Al13

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Abstract

In order to investigate the characteristics of pure Nano-Al13, Nano-Al13 was separated and purified from a series of poly-aluminum chloride (PAC) solutions which had the same Al13 percentage but different total Al concentrations, by using column chromatography, ethanol-acetone resolving and SO2− 4/Ba2+ displacement. The Al13 species yield was characterized by Al-ferron timed complexation spectrophotometry and 27Al-NMR (nuclear magnetic resonance). The coagulation efficiency of Nano-Al13, PAC and AlCl3 in synthetic water was also investigated by Jar tests. The dynamic process and aggregation state of kaolin suspensions coagulating with Nano-Al13, PAC and AlCl3 were similarly investigated using a photometric dispersion analyzer 2000 (PDA2000). The experimental results indicated that the ethanol-acetone resolving method was simple and could separate the PAC solution at different concentrations, while column chromatography could separate PAC solutions at low concentrations. The SO4 2−/Ba2+ displacement method could separate PAC solutions at high concentrations. However, extra inorganic cation and anion could be added in the solution during separation. The coagulation efficiency and dynamic experimental results showed that Nano-Al13 with high positive-charged species was effective in removing turbidity and color. The dynamic process results showed that Nano-Al13 also had the best recovery capability after shearing compared with PAC and AlCl3 because the Nano-Al13 conformation is more effective in charge neutralization.

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Authors and Affiliations

  1. School of Environmental Science and Engineering, Shandong University, Jinan, 250100, China

    Gao Baoyu, Yue Qinyan & Wang Xiaona

  2. College of Material and Environment, Qingdao University of Science and Technology, Qingdao, 266042, China

    Chu Yongbao

  3. Department of Chemistry, Dezhou University, Dezhou, 253023, China

    Kong Chunyan

Authors
  1. Gao Baoyu
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  2. Chu Yongbao
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  3. Yue Qinyan
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  4. Kong Chunyan
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  5. Wang Xiaona
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Corresponding author

Correspondence to Gao Baoyu.

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Translated from Acta Scientiae Circumstantiae, 2005, 25(6): 767–772 [译自: 环境科学学报]

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Gao, B., Chu, Y., Yue, Q. et al. Separating method and dynamic processes of Nano-Al13 . Front.Environ.Sci.Eng.China 1, 368–373 (2007). https://doi.org/10.1007/s11783-007-0063-8

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  • DOI: https://doi.org/10.1007/s11783-007-0063-8

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