Quality of zeolit from Vranjska banja deposit according to size classes

Abstract

This paper presents results of investigations of the quality of the natural zeolite as well as the quality of particular particle size classes of the natural zeolite. The aim of the investigations was to determine if the different classes possess different qualitys. The starting material used in experiements was the natural zeolite from Zlatokop deposit (Vranjska Banja, Serbia).. The classes -0.2+0.8 mm; -0.8+0.6 mm; -0.6+0.4 mm; -0.4+0.1 mm were obtained by wet sieving of the natural zeolite. Grinding processes of the natural zeolite gave classes -0.3+0.63 mm; -0.63+0 mm; -0,43+0 mm. Chemical composition , mineralogical XRPD analysis and cation exchange capacity (CEC) were performed on the starting sample and the obtained particle size classes. It was determined that all particle size classes possess similar quality. The highest cation exchange capacity was observed in classes -0,043+0mm (166,5 meq/100g) and -0,063+0mm (158, 8 meq/100g). [Projekat Ministarstva nauke Republike Srbije, br. TR 34013

The Application of a Natural Zeolite for Acid Mine Drainage Purification

“…Therefore, the hydration enthalpy is the stronger if the cation is more hydrated and the possibility of interaction with the adsorbent is less. Also, divalent cations with low hydration energies are sobbed preferably compared to cations with high hydration energies: ¹2010, ¹1955 and ¹1760 kJ mol ¹1 for Cu The characteristic values are in accordance with the published results 16) and presented in Table 4. The results of XRD analysis of natural samples after first and third experimental series are presented on Fig.…”

Optimization of the QuEChERS extraction procedure for the determination of polycyclic aromatic hydrocarbons in soil by gas chromatography-mass spectrometry

“…27 Clinoptilolite used in this study consisted of SiO 2 (62.28%), Al 2 O 3 (12.33%), Fe 2 O 3 (3.20%), CaO (6.65%), MgO (1.18%), Na 2 O (1.46%) and K 2 O (0.85%). 28 Surprisingly good results were obtained by using the combination of clinoptilolite/acetonitrile/water as the solvent (from 68.67 for benzo[a]anthracene to 110.93% for phenanthrene). The only exception is benzo[g,h,i]perylene, which gave recoveries between 50.19 and 66.47% (for three spiking levels), but some modications of clinoptilolite could be done to get better recovery for this compound.…”