Physico-Chemical nanomaterials science

Nano-, micro- and macro-transformations of marine sediments under the influence of biocolloid processes and nanotechnology of their enrichment and application
Panko A.V.1, Kovzun I.G.1, Prokopenko V.A.1,2, Tsyganovich O.A.1,2, Oliinyk V.O.1, Nikipelova O.M.3
1 F.D.Ovcharenko Institute of biocolloid chemistry of NAS of Ukraine, 
42, Ak.Vernadskogo Blvd., Kyiv, Ukraine,03142. 
E-mail: gr.k.ibcc@ukr.net
2 National technical University of Ukraine «KPI», 
37, Peremohy Ave., building 4, Kyiv, Ukraine, 03056
3 Ukrainian Research Institute of Medical Rehabilitation and Balneology, Ministry of Healthcare of Ukraine, 6, Lermontovskiy Lane, Odessa, Ukraine.

For the first time, simultaneous nano-, micro-, and macrotransformations of marine sediments under the influence of microorganisms as a part of biogeocenosis composition have been investigated [1]. It is shown that during biocolloidal processes, the macro-, micro-, and nanostructured hydrational dispersion of sediment mineral constituents takes place with their stratification into several layers. The layers separated from each other differ in density, rheological, mineral, physicochemical, and geomechanical parameters. It is established that in disperse marine sediments based on iron-aluminosilicate materials, such as peloids (therapeutic muds), turbidite-pelitic structures, and biocolloidal iron ores, the processes of their further disintegration are significantly accelerated by the action of microorganism surface-active products. It is shown that deep synergic destructive transformations run in mineral components, which contain iron and calcium-containing components and clay minerals.
The complex mechanisms of biocolloidal transformation of marine iron-aluminosilicate sediments and regularities of their nanostructural transformation [1] have allowed offering the basics of new effective enrichment technologies with separation of iron concentrate, technologies for receiving peloids with enhanced therapeutic properties for balneological needs and for regulation of ecological balance in seas and oceans in conditions of increasing negative processes. It is noted that the continuation of these investigations would be most effective only with international cooperation of scientists.

1.	Kovzun, I.G., et al. Nanostructural, biocolloid and physicochemical stress phenomena factors in iron aluminosilicate aqueous dispersions // Appl Nanosci. – 2020. https://doi.org/10.1007/s13204-020-01295-0