0.25
0.5
0.75
1.25
1.5
1.75
2
From a Boiling Stone to the Applicable Mineral in Various Industrial Processes
Natural zeolites, particularly clinoptilolite, is a versatile aluminosilicate mineral highly valued for its porous structure and exceptional ion-exchange capacity, making it essential across numerous
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Presentation
From a Boiling Stone to the Applicable Mineral in Various Industrial Processes00:00
Historical background00:19
Historical background01:29
2025: Nobel Prize in Chemistry04:10
Atlas of Zeolite Framework types05:14
Global Zeolite Market06:04
Synthetic vs. Natural Zeolites06:47
World production of natural clinoptilolite07:34
Versatile applications of clinoptilolite08:05
Utilization of clinoptilolite for human purposes08:16
Kraljevic Pavelić09:11
Current status of clinoptilolite-based drugs10:23
Basic structural characteristics11:12
Structural features of clinoptilolite11:37
Structural features of clinoptilolite11:42
Three types ofopenings and the diameters of selected cations.11:50
Deposits in Serbia12:29
Deposits in Serbia12:33
Deposits in Serbia13:05
Chemical composition13:38
Textural properties13:45
Surface modification13:57
Types14:34
Modification by ion exchange14:56
TEM analysis15:35
Benefits15:46
Coating with SnO216:02
Figure17:01
a possible scenario …17:29
Thermal modification17:54
Figure18:32
The steric constraint imposed bz the lattice ensures a homogeneous distribution of ultrafine nanoparticles18:46
Cations prefer different crystallographic locations depending on their chemical nature:19:11
Adsorption ability in water media19:40
Current situation in Serbia20:57
Current situation in Serbia21:42
Use of ZT in adsorption22:33
Kinetic studies were done by batch experiments22:57
Adsorption of cations23:25
The coordination sphere of the M2+alters during the reaction! 23:45
Pilot study for testing ZT applicability in in adsorption of Mg ions23:47
A spring from an abandoned Mg mine: Excellent water quality; water can be used untreated.24:02
Removal of Mgand recovery proceed intermittently.24:26
Removal of Mgand recovery proceed intermittently.24:29
Adsorption of anions25:29
A cationic surfactant „catches" anions by hydrophilic25:43
HDTMA was used to coat the zeolite surface in a double layer, ensuring that the negatively charged „heads“ were directed outward.26:22
Fe(OH)3possesses a high density of surface hydroxyl groups. 26:24
The best-fit corresponds to Langmuir isotherm26:56
Phosphatebinds as a bidentate ligand. 27:01
Nitrateis bound partially via anion exchange mechanism, replacing surface hydroxyls.27:23
Binding of SeO42-/SeO42- to Fe-ZT27:32
Adsorption of selenate on the ZT28:17
Use of SeO4-Fe-ZT for mushroom growth28:32
Adeeperlookshows29:36
Adsorption of an emergency contaminant (ciprofloxacin)29:38
Use of Fe3O4-ZT29:57
Fe3O4-coated ZT has a high affinity30:01
Regeneration30:40
Regeneration: non-thermal plasma treatment31:05
Reusability test in 5 repeated cycles31:19
Catalytic activity31:34
The catalytic activity depends on the chemical nature of NPs.32:31
Esterification of lavulinic acid (LA) with primary alcohols32:50
Replacement of conc H2SO4with solid acids33:25
Sulphated oxides as superacids33:35
Three-step procedure33:59
showssuperior catalytic activity in esterifying LA to octyl-LA.34:18
Photocatalytic activity34:50
Photodegradation adheres to the Langmuir–Hinshelwood kinetic model.35:05
An intriguing finding!35:08
Figure: MB photodegradation in the presence ofZTs36:01
Antibacterial activity36:03
Benefits of immobilization of beneficial bacterium onto ZT36:23
Antibacterial activity36:55
Mechanisms of antibacterial activity37:26
SEM and XANES studies found that Ag+ ions were uniformly distributed in A. baumannii biomass.37:32
Soil improvement38:07
The positive effect of the Fe-ZT38:40
Clinoptilolite, akin to other natural zeolites, cannot serve as a replacement for synthetic zeolites.39:02
My special thanks to all colleagues willing to collaborate in this study of natural clinoptilolite from Serbia. 39:55