Nanostructural, biocolloid and physicochemical stress phenomena factors in iron aluminosilicate aqueous dispersions

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ORIGINAL ARTICLE

Nanostructural, biocolloid and physicochemical stress phenomena factors in iron aluminosilicate aqueous dispersions I. G. Kovzun1 · A. V. Panko1   · O. M. Nikipelova2 · O. A. Tsyganovich1,3 · V. A. Prokopenko1,3 · V. O. Oliinyk1 Received: 17 December 2018 / Accepted: 14 February 2020 © King Abdulaziz City for Science and Technology 2020

Abstract Theoretical and experimental ideas about transformation mechanisms of iron aluminosilicate compounds of concentrated dispersions, sediments and soils are developed based on a complex physicochemical, microbiological and geomechanical researches in conditions of stress processes (natural and technogenic catastrophes). Leading significance of nano- and microstructures in stress phenomena behavior was shown, the main factors of which are geomechanical and biocolloid dispersion process and the following coagulation-condensation transformations in conditions of elastic–plastic dispersion flow. It was shown, that for iron-contained aluminosilicate dispersions with varying content of surface-active compounds and hydrated iron and silicon oxides with increasing of dispersed phase concentration and its flow, the change in dispersions viscosity in dependence of shear stress occurs in the direction of thixotropic → dilatant-rheopexic → hyperanomalous → ultraanomalous. Influence of ultraanomalous viscosity effect in iron-contained aluminosilicate dispersions on stress phenomena—mud shifts of underwater and land sediments and soils are reviewed. Recommendations for stress phenomena controlling based on detected regularities were provided using the high-dispersed technogenic sludges and waste piles of iron-silicate ore materials. Keywords  Iron aluminosilicate · Physicochemical geomechanics · Stress phenomena · Viscosity effect · Biocolloid transformation · Nanostructural transformation

Introduction Geomechanical, nanochemical, biocolloidal and other physicochemical factors of nanostructural transformations in iron aluminosilicate and polymineral formations (Fig. 1) made of dense iron oxide-aluminosilicates or nanocrystalline disperse rocks with additives of different iron oxide-hydroxide and organic compounds, carbonates, phosphates etc. are recently being actively investigated (Pertsov 1998; Wang et al. 2011; Kovzun et al. 2015; Panko et al. 2017, 2018a; Karato 2018; Prokopenko et al. 2018). Such formations based on nanostructural iron aluminosilicate systems and * A. V. Panko [email protected] 1



F.D.Ovcharenko Institute of Biocolloid Chemistry of NAS of Ukraine, 42, Ak.Vernadskogo Blvd., Kyiv 03680, Ukraine

2



State Agency “Ukrainian Research Institute of Medical Rehabilitation and Balneology, Ministry of Health of Ukraine”, 6, Lermontovskiy Lane, Odessa 65014, Ukraine

3

KPI, National Technical University of Ukraine “KPI”, 37, Peremohy Ave., building 4, Kyiv 03056, Ukraine



materials (NIASSM) have features typical only for them. For example, it was established that intermediate chain phase bonds with a number of nanoparticles play a significant role in

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