iii Sofia Zeolite Meeting '95

vii Preface

ix Contents

Zeolite Gardens in Space 3
T. Ivanova, I. Stoyanov, G. Stoilov, P. Kostov, S. Sapunova

Waste Heat/Solar Zeolite Power Systems 11
D. Tchernev

Adsorption of Cation Polyelectrolites on Natural Zeolites Paper Fillers 21
K. Ivanov, E. Gruber, V. Schempp, G. Kirov

Application of Natural Zeolites as Fillers of Polymers 29
I. Meshkova, T. Ushakova, N. Guruli, N. Kovaleva, N. Gultseva, V. Grinev, L. Novokshonova

Zeolite-Containing Rocks as Raw Material for Sibeerfoam Production 33
L. Kazantseva, I. Belitsky, B. Fursenko

Scale-up of Fixed Bed Adsorber with Natural Zeolites 43
I. Tsibranska, A. Assenov

Organomineral Sorbents Based on Clinoptilolite-Containing Tuffs 55
V. Nikashina, P. Gembitskii, E. Kats, L. Boksha

Ability of Organo-Clinoptilolite to Remove Single-Ring Aromatics from Contaminated Waters 61
E. Popovici, A. Vatajanu, A. Anastasiu

Demanganation of Artesian Waters Using Modified Clinoptilolite 65
V. Polyakov, Yu. Tarasevich, I. Polyakova, V. Ostapenko, A. Kulishenko, A. Shovgaj

Effect of Natural Clinoptilolite or Phillipsite in the Feeding of Lactating Diary Cows 67
D. Bergero, G. Rumello, C. Sarra, A. D'Angelo

Use of Natural Zeolites in Feeding of Sakha Horses 73
R. Ivanov

Ammonium Removal Capacity of Natural Zeolites in a Rainbow Trout Farming 75
D. Bergero, M. Boccignone, F. Di Natale, G. Forneris, G. Palmegiano, I. Zoccarato

Changes in Nutritional Properties of Zeolite Substrates During their Exploitation 83
I. Manolov, G. Stoilov

Italian Zeolitized Tuffs as Soil Conditioners. Resent Research Advances 93
M. de'Gennaro, A. Langella, C. Colella, E. Coppola, A. Buondonno

Organozeolite Composts Utilization in Agronomy and Ecology: Theoretical Aspects 101
K. Chakalov, K. Dimitrov, T. Popova

Effect of Zeolite on Yield and Fruit Quality of Glasshouse Cucumbers 109
V. Kanazirska, H. Simidtchiev, K. Chakalov

Effect of Natural Zeolites on Microbial Landscapes of Some Soils in the Republic of Georgia 111
T. Andronikashvili, M. Kardava, M. Gamsonia

Preparation and Properties of Ferrititized Cinoptilolite-Bearing Tuff 115
I. Serova, V. Nikashina, B. Rudenko, S. Meshalkin

Selectivity of Natural Zeolites for Toxic lons 121
S. Cerjan-Stefanovic, L. Curkovic

Adsorption of Mycotoxins on Modified Clinoptilolite 127
M. Tomasevic-Canovic, M. Dumic, O. Vucicevic, Z. Masic, O. Zurovac-Kuzman, A. Dakovic

Comparative Study of Clinoptilolite and Zeolite A as Antimicrobial Agents 133
G. Kirov, G. Terziiski

Absorption of Ammonium from the Gas Phase on Hydrated Zeolites Heulandite and Clinoptilolite (in situ NMR study) 142
S. Gabuda, S. Kozlova, N. Moroz

Adsorption of Sulphur Dioxide on Clinoptilolite Volcanic Tuff 146
Ch. Mihaila, H. Barbu, D. Lutic, M-I. Sava

Comparative Study of Water Adsorption and Air Enrichment by Selected Sedimentary and Synthetic Zeolites 153
I. Galabova, R. Sheppard, G. Haralampiev

Increasing the Effective Energy Storage Capacity of Natural Zeolite from Balikesir, Turkey 161
E. Yorukogullari, O. Orhun

Physical, Chemical and Catalytic Properties of Modified Indonesian Natural Mordenite 165
A. Eliyanti, T. Pudiyanto, R. Sutontro, Saifullah

Catalytic Activity of Bulgarian and Korean Natural Mordenites 169
M. Yankov, N. Kolchagova

Calorimetric Study of Ion-Exchange on Clinoptilolite and Mordenite at Different Temperatures 173
N. Petrova, L. Filizova, G. Kirov

Generation of Free Radicals in Reactions of Clinoptilolite with Water Medium 182
L. Filizova, L. Korkina, T. Suslova, Z. Cheremisina

Specific Thermal Behaviour of Heulandite - Clinoptilolite in Zeolite Rocks: a Profile Fitting Analysis of the 020 Powder Diffraction Peak 187
O. Petrov, V. Valentinov

Processes of Tribochemical Modification of Clinoptilolite Rocks by Calcium Phosphate Under Conditions of High-Energy Grinding 193
T. Yusupov, L. Schumskaya, L. Kovaleva, T. Markovich

Ca²⁺ = 2NH₄⁺ Ion-Exchange Reaction on Clinoptilolite 199
D.Vucinic, R.Tomanec

Genesis of Zeolites Associated with Barite in the Lacustrine Oligo-Miocene Basin of the Limagne Bourbonnaise (French Massif Central) 209
Ph. Rocher

Zeolite Diagenesis in the Neogene East Slovak Basin 215
Eva Samajova

Geoautoclave-Type Zeolitization in the Miocene Rhyolite Tuff, Mecsek Mountains, SW Hungary 227
M. Polgari, I. Forizs, Z. Mathe, M. Toth, E. Pecsi-Donath

Mineralogical Characterization of Zeolitized Tufffrom the Miocene Lacustrine Basin of Toponica, Serbia 241
R. Dimitrievic, M. Tomaseviv-Canovic, J. Obradovic, M. Dumic, O. Vukicevic

Geology of the Oligocene Zeolitic Rocks in NE Rhodopes, Bulgaria: A Review and New Data 249
B. Aleksiev, E. Djourova, Z. Milakovska-Vergilova

Geological, Mineralogical and Technological Characteristics of Zeolitized Tuff Deposits in the Eastern Rhodopes 263
N. Raynov, N. Popov, Y. Yanev, P. Petrova, T. Popova, V. Hristova, R. Atanasova, R. Zankarska

A Preliminary Study on the Zeolitic Tuffs in the Komotini-Sappes, Tertiary Basin, W. Thrace, NE Greece 276
I. Marantos, G. Kosharis, V. Perdikatsis, S. Karantassi, C. Michael, P. Papadopoulos

Standardization of Methods for Zeolite Speciality Determination and Techniques for Zeolite Resources Utilization 282
H. Minato