Page 56 - tmp

GEOPOLYMERS AND THEIR APPLICATION IN FILTRATION OF
HEAVY METALS FROM WATER

JOVANA KARANOVIĆ

GLASINAČKA 11

INTRODUCTION C(mg/l) Cu Fe
C0 2.13 2.17
Water is the most important element of life. Water
quality can be defined as the suitability of water for a C₁ 1.98 1.87
particular use. Water situation is deteriorating due to C₂ 1.56 1.56
the fact that all the available water resources are C₃ 1.48 1.24
polluted simultaneously.
C₄ 0.78 0.78
Table 2:.Concentrations of copper and iron

Based on the received results the effect of
immobilization was calculated.
Picture 1: Different geopolymers, depending on the
ratio of silicon and aluminum 100
50
Heavy metals usually get into the water through 0
industrial wastewater. Geopolymers are three- ɳ₁ ɳ₂ ɳ₃ ɳ₄
dimensional synthetic aluminosilicate. These are
inorganic, solid, stable and non-flammable materials . Table 3.Effect of immobilization of the four samples
When the ratio of Si / Al ≈2 the geopolymer can be of iron and copper
used as a material for filtration.

CONCLUSION
METHOD OF OPERATION
It was concluded that geopolymers which consisted of
Dissolution of copper and iron in water with 70% metakaolin and 30% of diatomaceous earth, had
concentration of 0.5 mol / dm ³, served as a sample of the best filtration capacity. With this experiment it was
contaminated water. In the four glasses were measured proven that geopolymers can be used for removal of
0.05g of different geopolymers: 100% metakaolin; heavy metals from contaminated water. This is very
90% of metakaloin and 10% of diatomaceous earth; important, since the geopolymers are natural
80% of metakaloin and 20% diatomaceous earth; materials, which have no subsequent adverse effects.
70% of metakaloin and 30% of diatomaceous earth . Geopolymers with collected metals within itself can
To each glass was added 20ml dissolution. After half be recycled and used for roads construction etc.
an hour of sedimentation, dissolutions were filtered,
and poured in four vial. In the fifth, referent vial was
poured starting dissolution. All the vials were sent to LITERATURE
be analyzed by Atomic Absorption Spectrometry in
order to determine heavy metal concentrations. [1 ]J. Baras, R. Petrović; Zagađivanje i zaštita vode:
Mere zaštite voda i kontrola ispuštanja otpadnih voda
RESULTS u zakonodavstvu Republike Srbije, Beograd (2009)

Using Atomic Absorption Spectrometry, [2] M. Mirković, Skripta za Vinčine naučionice:Da li
concentrations of copper and iron were obtained for želiš da znaš koji su to neorganski materijali
all four glasses. nazapaljivi pri visokim temperaturama