Oil-Filled Cryogels

New Approach for Storage and Utilization of Liquid Combustible Wastes

Ksenia Yu Vershinina, Dmitrii O. Glushkov, Aleksandr G. Nigay, Vyacheslav A. Yanovsky, Olga S. Yashutina

Research output: Contribution to journalArticle

Abstract

A method of preparing oil-filled cryogels on the basis of an aqueous solution of poly(vinyl alcohol) (PVA) has been elaborated. The stability of primary oil emulsions and their rheological properties were analyzed for 30 days, as well as the mechanical properties of gel fuel pellets (obtained after 15 cycles of freezing/thawing of oil emulsions) with size of 20 mm for a group of compositions: 100-20 vol % aqueous solution of PVA (5, 10 wt %) + 0-80 vol % oil. The rheological behavior of non-Newtonian oil emulsions is described by the Herschel-Bulkley model. The elastic moduli and the tensile strength of fuel pellets of different component compositions range from 0.7 to 7.6 kPa and from 2.5 to 60 kPa, respectively. The oleophilic properties are more distinct for gel fuel prepared from oil emulsions with a higher content of the dispersed phase and lower concentrations of the polymer in the dispersion medium. The ignition mechanism and combustion characteristics have been established for processes occurring under the conditions of a radiant heat supply. Gel fuels, unlike combustible liquids, are characterized by a longer induction period, but a multicomponent structure of fuel caused microexplosions that enhance the combustion process.

Original languageEnglish
JournalIndustrial and Engineering Chemistry Research
DOIs
Publication statusPublished - 1 Jan 2019

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Cryogels
Oils
Emulsions
Liquids
Gels
Thawing
Chemical analysis
Freezing
Ignition
Polymers
Alcohols
Tensile strength
Elastic moduli
Mechanical properties

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

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title = "Oil-Filled Cryogels: New Approach for Storage and Utilization of Liquid Combustible Wastes",
abstract = "A method of preparing oil-filled cryogels on the basis of an aqueous solution of poly(vinyl alcohol) (PVA) has been elaborated. The stability of primary oil emulsions and their rheological properties were analyzed for 30 days, as well as the mechanical properties of gel fuel pellets (obtained after 15 cycles of freezing/thawing of oil emulsions) with size of 20 mm for a group of compositions: 100-20 vol {\%} aqueous solution of PVA (5, 10 wt {\%}) + 0-80 vol {\%} oil. The rheological behavior of non-Newtonian oil emulsions is described by the Herschel-Bulkley model. The elastic moduli and the tensile strength of fuel pellets of different component compositions range from 0.7 to 7.6 kPa and from 2.5 to 60 kPa, respectively. The oleophilic properties are more distinct for gel fuel prepared from oil emulsions with a higher content of the dispersed phase and lower concentrations of the polymer in the dispersion medium. The ignition mechanism and combustion characteristics have been established for processes occurring under the conditions of a radiant heat supply. Gel fuels, unlike combustible liquids, are characterized by a longer induction period, but a multicomponent structure of fuel caused microexplosions that enhance the combustion process.",
author = "Vershinina, {Ksenia Yu} and Glushkov, {Dmitrii O.} and Nigay, {Aleksandr G.} and Yanovsky, {Vyacheslav A.} and Yashutina, {Olga S.}",
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language = "English",
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AU - Nigay, Aleksandr G.

AU - Yanovsky, Vyacheslav A.

AU - Yashutina, Olga S.

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