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<p>A method for preparing a peat-shungite sorbent with the addition of a potassium-phosphate buffer solution for neutralizing hydrazine derivatives is proposed. The peat-shungite sorbent is characterized by ease of manufacture, relative cheapness, in addition, the main components are of natural origin. Sorbents with different shungite contents (25, 34, 42 and 50 wt.%) were prepared. With a peat/shungite ratio of 65/35 wt.%, the sorbent is the most resistant to mechanical destruction. According to the proposed method, the sorbent was prepared in different forms: powder, granules, cubes. The efficiency of the peat-shungite sorbent was tested in the process of neutralizing highly toxic 1,1-dimethylhydrazine and some products of its transformation. It was found that with an initial concentration of the ecotoxicant of 500&#xa0;g/kg, the maximum permissible concentration is reached on the 60th day of interaction. The studies carried out and the calculated kinetic parameters of the neutralization process showed that shungite-containing sorbents are approximately 1.6 times more effective than peat.</p>

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Method of preparation and application of peat-shungite sorbent for detoxification of hydrazine derivatives

  • 期刊论文

  • 发表日期：

    2025年2月11日

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  • Irina V. Minenkova,
  • Aleksey V. Ul’yanov,
  • Svetlana V. Popova,
  • Aleksey A. Sobolev,
  • Ivan S. Pytskii,
  • Aleksey K. Buryak

摘要

A method for preparing a peat-shungite sorbent with the addition of a potassium-phosphate buffer solution for neutralizing hydrazine derivatives is proposed. The peat-shungite sorbent is characterized by ease of manufacture, relative cheapness, in addition, the main components are of natural origin. Sorbents with different shungite contents (25, 34, 42 and 50 wt.%) were prepared. With a peat/shungite ratio of 65/35 wt.%, the sorbent is the most resistant to mechanical destruction. According to the proposed method, the sorbent was prepared in different forms: powder, granules, cubes. The efficiency of the peat-shungite sorbent was tested in the process of neutralizing highly toxic 1,1-dimethylhydrazine and some products of its transformation. It was found that with an initial concentration of the ecotoxicant of 500 g/kg, the maximum permissible concentration is reached on the 60th day of interaction. The studies carried out and the calculated kinetic parameters of the neutralization process showed that shungite-containing sorbents are approximately 1.6 times more effective than peat.