Influence of aluminium coagulants composition on colloidal characteristics of humic substances dispersions

Authors

  • Alesia V. Zyhmant Research Institute for Physical Chemical Problems of the Belarusian State University, Leningradskaya street, 14, 220006, Minsk
  • Tatsiana A. Savitskaya Research Institute for Physical Chemical problems of the Belarusian State University, Leningradskaya street, 14, 220006, Minsk
  • Nadzeia G. Tsyhankova Research Institute for Physical Chemical problems of the Belarusian State University, Leningradskaya street, 14, 220006, Minsk
  • Dzmitry D. Hrynshpan Research Institute for Physical Chemical problems of the Belarusian State University, Leningradskaya street, 14, 220006, Minsk

Keywords:

dispersions, coagulants, aluminium sulphate, pentahydroxodialuminium chloride, sedimentation rate, kaolin, humic substances

Abstract

The effect of aluminium coagulants composition on colloidal characteristics of humic substances dispersions (diameter, particle size distribution, density and sedimentation rate of aggregates) was investigated by using of laser diffraction method. Aggregates shape and structure were characterized by the experimentally determined fractal dimension values in the comparison with computer simulation data. The mixed aggregates size in the humic substances dispersions was founded to increase in the case of aluminium sulphate as a coagulant according to the aluminium hydroxide dispersion when alone. Otherwise, the density of mixed aggregates is lower than for the aggregates in aluminium hydroxide dispersion. In the case of pentahydroxodialuminium chloride, the reverse relationships were observed.

Author Biographies

  • Alesia V. Zyhmant, Research Institute for Physical Chemical Problems of the Belarusian State University, Leningradskaya street, 14, 220006, Minsk

    junior researcher

  • Tatsiana A. Savitskaya, Research Institute for Physical Chemical problems of the Belarusian State University, Leningradskaya street, 14, 220006, Minsk

    PhD (chemistry), docent; professor at the department of physical chemistry, leading researcher

  • Nadzeia G. Tsyhankova, Research Institute for Physical Chemical problems of the Belarusian State University, Leningradskaya street, 14, 220006, Minsk

    PhD (chemistry); leading researcher

  • Dzmitry D. Hrynshpan, Research Institute for Physical Chemical problems of the Belarusian State University, Leningradskaya street, 14, 220006, Minsk

    doctor of science (chemistry), full professor; head of the laboratory of cellulose solutions and products of their treatment

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Published

2017-11-29

Issue

No. 1 (2017): Journal of the Belarusian State University. Chemistry

Section

Original Articles

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How to Cite

[1]
Zyhmant, A.V. et al. 2017. Influence of aluminium coagulants composition on colloidal characteristics of humic substances dispersions. Journal of the Belarusian State University. Chemistry. 1 (Nov. 2017), 65–73.