Оptimization of humic acids extraction from coal of Oy-karagay field

  • Zhaksyntay Kairbekov al-Farabi Kazakh National University
  • Zhaniya Eshova al-Farabi Kazakh National University
  • Dina Akbayeva al-Farabi Kazakh National University
  • R. Bashirbayevа al-Farabi Kazakh National University
DOI: https://doi.org/10.15328/chemb_2012_479-83
Keywords: brown coal, humic (fulvo-) acid, base, factorial planning, matrix, extraction, optimum conditions

Abstract

Optimum conditions of extraction of humic acids from brown coal of a domestic Oy-Karagay field using the  method of experiment planning were defined: extraction temperature – 80 оC; duration of experiment – 45 minutes; concentration of alkali – 1,0 %; ratio of coal and alkali solution equal 1:25. The experiment realized in these conditions is coordinated with sampled data. The  composition of the humic acids extracted after alkaline processing of brown coal have been  investigated by  IR-spectroscopy. IR spectrum of humic acids contains a band due to the active acidic groups.

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Published
2012-12-04
How to Cite
Kairbekov, Z., Eshova, Z., Akbayeva, D., & BashirbayevаR. (2012). Оptimization of humic acids extraction from coal of Oy-karagay field. Chemical Bulletin of Kazakh National University, 68(4), 79-83. https://doi.org/https://doi.org/10.15328/chemb_2012_479-83
Issue
Vol 68 No 4 (2012): Chemical Bulletin of Kazakh National University
Section
Other Papers
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