REMOVAL OF SELECTED BIOGENIC COMPOUNDS FROM AQUEOUS SOLUTIONS USING METAKAOLIN AND MODIFIED METAKAOLIN
Agnieszka Grela 1  
,  
Tomasz Bajda 2  
 
 
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1
Politechnika Krakowska, Wydział Inżynierii Środowiska, ul. Warszawska 24, 31-155 Kraków
2
Akademia Górniczo-Hutnicza, Wydział Geologii, Geofizyki i Ochrony Środowiska
CORRESPONDING AUTHOR
Agnieszka Grela   

Politechnika Krakowska, Wydział Inżynierii Środowiska, ul. Warszawska 24, 31-155 Kraków
Publication date: 2017-04-01
 
Inż. Ekolog. 2017; 2:30–38
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ABSTRACT
The main purpose of this paper was to assess the effectiveness of the removal of biogenic compounds, NH4+, NO3-, PO43- from single-component solutions (with concentrations ranging from 0.3-16.7 mmol / dm3) and ternary solution (with a total concentration of three of ions 0.9-50.1 mmol/dm3). In the research the Romanico (M) metakaolin was used as well as a product of modification of metakaolin containg zeolites (M2, M3). Sorption experiments were conducted under static conditions. In equilibrium solutions the concentrations of NH4+, NO3-, PO43- were determined by colorimetric method using a UV-Vis spectrophotometer. The M2 was the most effective in the removal of nutrients in both solutions (single-component and ternary). This is mainly due to the larger specific surface area (BET) of M2 material (328.2 m2/g) than the material M (13.2 m2/g). Modification of the material M has resulted in increased removal efficiency of nutrients. In most (about 90%) efficiency NH4+ ions (from either single-component and ternary solutions) were removed. With a large (about 50%) efficiency PO43- ions (from either single-component and ternary solutions) were removed. In the lowest (10%) efficiency the NO3- ions from the single-component solution were removed and with more than 30% efficiency the ternary solution were removed.