M. Tech. Chemical Engineering. / Discusses the scope of this research study composes of three interactive steps. The first step involves the design of the specific zeolite system (ZSM-5) and the set-up of an autoclave reactor for the hydrothermal synthesis of this and other zeolites and nano materials, then the oxidation catalyst (TS-1) development, i.e. the substitution of aluminium with titanium in the zeolite framework, and finally the formulation and preparation of the isomorphous Silicalite zeolite by omitting the aluminium in the synthesis. And further, set-up of suitable equipments and apparatus for the catalytic testing of the Titanium Silicalite-1 in the oxidation reaction of phenol as the test reaction. Therefore, the overall objectives of this research are: set up an autoclave reactor for the hydrothermal synthesis, formulation of a synthesis recipe for MFI family of catalysts in the laboratory, synthesis of ZSM-5, Silicalite-1, and TS-1 zeolites catalysts in the laboratory, characterization and optimization of the of catalysts listed above, testing the Ti-Silicalite catalyst in the oxidation reaction of phenol with hydrogen peroxide, as the oxidant, set up analytical system (Gas Chromatography, ASS) for analysis of catalyst performance in the oxidation reaction, Evaluate the conversion of the reaction and the selectivity of the individual catalysts reaction Evaluate the conversion of the reaction and the selectivity of the individual catalysts reaction and verify results obtained and compare with systems described in the literature.

M. Tech. Engineering: Chemical. / Focuses on the emerging application of clinoptilolite in removing aspirin and cephalexin from municipal wastewater streams. The mechanisms of sorbent-organic compounds interaction was studied in detail. Specifically, this research aims to achieve the following objectives: I. to investigate the sorption capacity of surfactant modified clinoptilolite on the removal of aspirin and cephalexin ; II. To relate sorbents performance to process variables with sorbent properties and water quality ; III. to compare the sorption capacity of surfactant modified clinoptilolite to commercial emerging adsorbents on the removal of aspirin and cephalexin from aqueous solution ; IV. to apply existing mathematical models to describe isotherms and kinetic data in order to extract design parameters.

M.Tech.Chemical Engineering. / The distillery wastewaters released from industries that use molasses as a major source of carbon in their fermentation processes pose serious threats to the water quality in several regions around the globe. Melanoidin is an antioxidant that results from the Malliard reaction found in fermentation and distillation processes. This study explores the removal of melanoidin from aqueous solution using natural clinoptilolite modified using cationic surfactant hexadecyltrimethyl ammonium bromide. The absorbent media was characterized using analyatical techniques such as BET, FTIR, SEM-EDS and XRD analysis. Given the relatively low cost of natural zeolite, it is possible to apply the sorbent in polishing distillery wastewater after a biological process. Since both natural zeolites and distillery waste streams are used in agriculture, a prudent way to dispose the spent media is to use it as fertilizer in farming.

A range of porous solid adsorbents were synthesised and their ability to separate and capture carbon dioxide (CO2) from gas mixtures was examined. CO2 separation from flue gas – a type of exhaust gas from fossil fuel combustion that consists of CO2 mixed with mainly nitrogen and biogas (consists of CO2 mixed with mainly methane) were explicitly considered. The selected adsorbents were chosen partly due to their narrow pore sizes. Narrow pores can differentiate gas molecules of different sizes via a kinetic separation mechanism: a large gas molecule should find it more difficult to enter a narrow pore. CO2 has the smallest kinetic diameter in zeolites when compared with the other two gases in this study. Narrow pore adsorbents can therefore, show enhanced kinetic selectivity to adsorb CO2 from a gas mixture. The adsorbents tested in this study included mixed cation zeolite A, zeolite ZK-4, a range of aluminophosphates and silicoaluminophosphates, as well as two types of titanium silicates (ETS-4, CTS-1). These adsorbents were compared with one another from different aspects such as CO2 capacity, CO2 selectivity, cyclic performance, working capacity, cost of synthesis, etc. Each of the tested adsorbents has its advantages and disadvantages. Serval phosphates were identified as potentially good CO2 adsorbents, but the high cost of their synthesis must be addressed in order to develop these adsorbents for applications. / <p>At the time of the doctoral defence the following papers were unpublished and had a status as follows: Papers 4-8: Manuscripts.</p>

Zeolite (77% clinoptilolite) was supplemented in grower hog rations at a rate of 2 or 5%. The growth performance (weight gain, daily consumption and feed conversion) and air quality were compared against a control group's where zeolite was replaced by fine sand. A significant reduction in the feed/gain ratio and daily consumption was observed when 2% zeolite was fed to pigs weighing less than 40 kg. The same results were obtained when 5% zeolite was fed to pigs weighing more thoun 50 kg. No significant difference in air quality (CO 2, NH3, H2S and temperature) was noticed between the control and the zeolite room even if the NH3, level fell from 12.5 to 8.7 ppm when the zeolite level was increased from 2 to 5%. A slight reduction of odor intensity was observed in the zeolite room. In parallel with this research, a dynamic automated olfactometer for six lists was conceived and built according to American and European guidelines. This instrument measures agricultural odors with precision and speed.

Thesis (Ph. D.)--State University of New York at Binghamton, Department of Chemistry, 2006. / Includes bibliographical references.

Thesis (M.Sc.) - Carleton University, 2004. / Includes bibliographical references. Also available in electronic format on the Internet.

Thesis (Ph. D.)--State University of New York at Binghamton, Department of Chemistry, 2009. / Includes bibliographical references.

Thesis (doctoral)--Technische Universiteit Delft, 2002. / Vita. Includes bibliographical references.

Thesis (doctoral)--Technische Universiteit Delft, 2002. / Vita. Includes bibliographical references.