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Long-Term Zinc-Containing Microfertilizer Based on Bentonite Clay: Manufacture and Properties

  • Inorganic Synthesis and Industrial Inorganic Chemistry
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Abstract

A zinc-containing material based on bentonite clay with a montmorillonite content of 95 wt %, modified with a concentrated Na2SiO3 solution, was obtained, which can be used as a long-term microfertilizer. Zn2+ in an amount of 3 wt % is blocked in the interlayer space of montmorillonite by silica gel clusters, which significantly slows down the degree of its leaching into the soil. During ten cycles of contact of the material with water in a slightly acidic medium, depending on its dispersity, 5–11% of the introduced amount of Zn2+ was released into the aqueous phase, which is 2–4 times less compared to the unmodified sample.

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ACKNOWLEDGMENTS

The authors express their gratitude to the Center for Collective Use of Mendeleev University of Chemical Technology of Russia for the analyses of the morphology and elemental composition of the samples.

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Authors and Affiliations

  1. Mendeleev University of Chemical Technology of Russia, 125047, Moscow, Russia

    T. V. Kon’kova

  2. Russian State Agrarian University – Moscow Timiryazev Agricultural Academy, 127550, Moscow, Russia

    A. P. Rysev

Authors
  1. T. V. Kon’kova
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  2. A. P. Rysev
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Correspondence to T. V. Kon’kova.

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Kon’kova, T.V., Rysev, A.P. Long-Term Zinc-Containing Microfertilizer Based on Bentonite Clay: Manufacture and Properties. Russ J Appl Chem 95, 1380–1386 (2022). https://doi.org/10.1134/S1070427222090130

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  • DOI: https://doi.org/10.1134/S1070427222090130

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