Science – Future of Lithuania / Mokslas – Lietuvos Ateitis, Vol 9, No 4 (2017)

Filter Medias from Granulated Foam-glass, Properties Investigated for Water Treatment Possibilities

Ramunė Žurauskienė (Vilnius Gediminas Technical University, Lithuania)
Marina Valentukevičienė (Vilnius Gediminas Technical University, Lithuania)
Raminta Žurauskaitė (Vilnius Gediminas Technical University, Lithuania)


Inorganic material – granulated foam-glass produced from glass breakage in small porous granule shape. Foam-glass is gotten by connecting thoroughly grounded glass with foamers, later this composition is heated in the furnace in especially high temperature and is turned into various diameter greyish granules. Granulated foam-glass is a unique ecological material of which inner structure pores are arranged in such a way that air is trapped inside. Foam-glass production technology is one of the most advanced since the product is made from secondary raw materials, not leaving any third row waste. From granule surface images it can be seen that granule surface has pores and voids, some of these pores are closed, others are connected with granule’s inner pores, all pore walls are smooth, and the wall material is vitrified. Pores and voids are arranged chaotically in smaller granules, bigger granules inner space structure is tidy, bigger part is occupied by correctly arranged bigger pores and space between them is filled with smaller pores. Granules are composed of amorphous phase, in mineralogical composition can emit one material cristobalite. In the work were researched two fraction granules: 0/2 and 2/4 as well as determined 0/4 fraction granular-metric composition. Researched and determined main physical granule properties and properties related to water effect to the material, shown in micro-structural granule surface and inner structure images. According to explored properties it can be noted that granules can be adapted in water cleaning technologies.

Article in: English

Article published: 2017-09-11

Keyword(s): absorption; effective granule porosity; foam-glass granules; granule surface structure; porous space reserve.

DOI: 10.3846/mla.2017.1056

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Science – Future of Lithuania / Mokslas – Lietuvos Ateitis ISSN 2029-2341, eISSN 2029-2252
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