Osmotic Effects during Filtration through Composite Membranes Formed in Water Treatment Processes

Chugunov, A. S.; Vinnitskii, V. A.

doi:10.1134/s096554411806004x

Cited by 2 publications

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“…To solve this problem, the most promising is the use of alluvial dynamic membranes, which, in principle, can provide the ultra-, micro-, and nanofiltration. In the considered case, such membranes can spontaneously form on various filter surfaces from the dispersed component of solutions [11].…”

Section: Process Solution Preparation Unitmentioning

confidence: 99%

Minimization of radioactive waste volume from nuclear power plants using precipitation-membrane technologies

Vinnitskii

Chugunov

2022

BIO Web Conf.

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The purpose of this study is the development and experimental testing on simulation solutions of a precipitation-membrane method for fractionation of liquid radioactive waste and sorption post-treatment of the filtrate. The choice of processing method is based on the analysis of factors affecting the efficiency of ion-exchange purification of solutions; properties of complex compounds of polyvalent metals; characteristics of commercially available membrane elements and economic aspects of the preparation and disposal of radioactive waste. The basic idea is to use the internal properties of solutions to isolate polyvalent cations and acidoligands in the form of poorly soluble compounds in the volume of an inert polypropylene element, which will increase the efficiency of ion-exchange post-treatment and reduce the amount of waste. The architecture and operating parameters of the experimental setup are designed to provide favorable conditions for the formation in solution of complexes (ion pairs) of polycharged cations with acid ligands of various nature.

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Section: Process Solution Preparation Unitmentioning

confidence: 99%

Minimization of radioactive waste volume from nuclear power plants using precipitation-membrane technologies

Vinnitskii

Chugunov

2022

BIO Web Conf.

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Extraction of Valuable Components from Man-made Waters

2020

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The results of experimental studies on isolation of poly-charged metals cations from man-made waters, which are valuable components, are presented. For their isolation and concentration, the method of homogenous sedimentation was used, which provides self-purification of water bodies in natural conditions and is responsible for the formation of bottom sediments. To implement these processes, energy-consuming low-pressure membrane methods were used- nanofiltration and dialysis, which creates conditions for the formation of solid solutions inside the composite membrane and do not require additional dosage of reagents. With the help of such combination, it was possible to obtain conditionally clean water for technical and household use, to divert environmentally friendly waste waters to the hydrographic network of the region. In addition, the shape of resulting original “ore body” simplifies its processing into individual components. It is noted the use of membrane reactors makes it possible to implement the homogenous deposition regime, which ensures the isolation of transition metals in the form of solid solutions with natural components of surface waters.

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Osmotic Effects during Filtration through Composite Membranes Formed in Water Treatment Processes

Cited by 2 publications

References 0 publications

Minimization of radioactive waste volume from nuclear power plants using precipitation-membrane technologies

Minimization of radioactive waste volume from nuclear power plants using precipitation-membrane technologies

Extraction of Valuable Components from Man-made Waters

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