Natural Microporous Materials in Environmental Technology

ISBN-13: 9780792358886 / Angielski / Twarda / 1999 / 516 str.

P. Misaelides; F. Macasek; T. J. Pinnavaia

Opis

The natural microporous materials include several types of minerals such as zeolites, clay minerals, micas, Fe-lMn- oxides/hydroxidesloxyhydroxides present in various geo logical environments and soil formations. Their crystal structure is characterised by the presence of intra crystal micropores (channels or interlayer void spaces) providing high microporosity/surface area and distinguished physico-chemical properties such as cata lytic and sorptivelion-exchange ones. This volume includes the key- lectures and participant contributions delivered at the NATO-funded Advanced Research Workshop on the Application of Natural Microporous Materials for Environmental Technology, which was held in the th Smolenice Castle, Slovakia, from the 2()1h to 30 of October 1998 and was attended by 55 participants from 17 countries. The purpose of the workshop was the critical assessment of the current developments and discussion of the future perspectives in the field of utilisation of natural microporous materials (zeolites, clays, oxides) for the solution of problems related to the toxic and nuclear waste management, water pollution control and decontamination, the environmental catalysis associated with atmospheric pollution, the creation of new materials for energy storage and agricultural management including the development of artificial soils for plant growth in the space. Of especial importance for this meeting was the exchange of information and know-how among specialists working in institutions of NATO and Cooperation Partner countries aiming towards the development of common strategies for the solution of environmental problems and the promotion of further scientific and technological collaboration in the field.

Spis treści

Clay Minerals.- Structure and Chemical Characteristics of Modified Clays.- Pillared Clays: Chemistry and Prospects.- Hg2+ Trapping by Thiol — Functionalised Mesoporous Silica Molecular Sieves.- The Use of Clays as Sorbents and Catalysts.- Contaminant Plume Management Utilising In Situ Organoclay Sorbent Zones.- Atomistic Computer Modelling of Chiral Pillared Clays.- Natural Microporous Materials of Central Slovakia.- Sorption and Leaching Properties of the Composites and Complexes of Natural Microporous Materials.- Experimental Study on the Formation of Heavy Metal Sulphides Using Layer Silicates: Environmental Aspects.- Diffusion of Radionuclides in Clay-Based Ceramics.- Natural Zeolites.- Zeoponic Substrates for Space Applications: Advances in the Use of Natural Zeolites for Plant Growth.- Natural Zeolites and Nuclear-Waste Management: The Case of Yucca Mountain, Nevada, USA.- Interaction of Actinides with Natural Microporous Materials.- Environmental Applications of Natural Zeolitic Materials Based on their Ion Exchange Properties.- Zeolitised Materials of the Mediterranean Area as Adsorbents for Environmental Protection.- Distribution of Industrial Minerals in Sardinia (Italy): Clinoptilolite Bearing Rocks of the Logudoro Region.- Application of Microporous Materials for the Recovery of Nutrients From Wastewaters.- Transition Metal Complexes Supported on Natural Zeolitic Materials: An Overview.- Heterogeneous Catalysis at Supercritical Conditions Using Microporous Materials. Environmental Advantages.- Properties of NaOH-Treated Slovak Zeolitic Tuff and its Sorption Ability Towards Some Cations.- Zeolites in Aquacultural Primary Production.- Sorption of Cadmium(II) and Nickel(II) on a Natural Zeolite Rich in Clinoptilolite.- Environmental Applications of Modified Natural Zeolites.- Romanian Volcanic Tuffs Exploitation in Environmental Protection.- Sorption of Heavy Metals and Radionuclides on Zeolites and Clays.- A Preliminary Study of Mercury Uptake by a Greek Zeoliferous Rock.- Natural Sorbents as Barriers against Migration of Radionuclides from Radioactive Waste Repositories.- Preparation of a Modified Adsorbent Based on Clinoptilolite and its Application for the Removal of Iron and Manganese Ions from Artesian Water.- Natural Microporous Oxides.- Metal Detachments from (Hydr)Oxide Mineral Surfaces. A Molecular View.- Using Magnetites to Remediate Heavy Metal Wastewaters from Acid-Mine Drainage.- Wastewater Treatment Technology Based on Iron Oxides.- Goethite Mineral as a Sorbent for Heavy Metal Ions.- Reversed-Phase Column Extraction Studies using a Standardised and Silanised Anatolian Perlite.- Characterisation of Natural Microporous Manganese Oxides: The Case of Todorokite.- Modelling Sorption of Metals From Aqueous Solution onto Mineral Particles: The Case of-Arsenic Ions and Goethite Ore.- Preparation of Granular Forms of Powdered Materials for their Application in Column Packed Beds.- The Molecular Layering Method as a Basis of Chemical Nanotechnology.- Other Natural Microporous Materials.- Natural Chitin Containing Materials for Colour Removal from Textile Wastewaters.- List of Participants.