Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 16 of 16 for “"Ceramic membranes"”.
-
Preparation, characterization and testing of inorganic ceramic membranes.
… to economic scale using low efficient Inorganic Ceramic membranes has been proposed. This was achieved by the addition of second and third stage permeation trains to the existing low CO2 recovering Ceramic Inorganic membranes. The Inorganic Ceramic membrane development involved modification of …
-
Microfiltration of Corn Starch Hydrolysate Using Ceramic Membranes
… having equal area. Total capital cost of the ceramic membrane plant, including CIP (clean-in-place) system would be $2.08 million, with operating costs of \$517,408/year. In contrast, operating costs for rotary vacuum precoat filtration, which uses diatomaceous earth as a filter aid, would be …
-
Charged-defect transport induced stress in mixed ionic-electronic conducting ceramic membranes
… response within mixed-conducting ceramic membranes is characterized using numerical and analytic solutions. The approach is based on computational modeling using extensions of the Nernst-Planck-Poisson(NPP) formulation. In addition to diffusion and migration contributions, the …
-
Screening of Microfiltration and Ultrafiltration Ceramic Membranes for Produced Water Treatment and Testing of Different Cleaning Methods
… was used to treat produced water (PW). Two ceramic microfiltration (MF) membranes and two ceramic ultrafiltration (UF) membranes were tested. The treatment target was to reach a contamination level suitable for further treatment by nanofiltration (NF)/reverse osmosis (RO) polymeric …
-
Metal oxide modified tubular ceramic membrane for the separation of oil-in-water emulsion.
… flocculation, bioremediation, centrifugation, membranes, etc. This is mostly due to the oil droplet size falling in the emulsified range or nano range, which is easily stabilised with surfactant present in the O/W. Recently, membrane technology has been the most researched approach for the …
-
Cross-flow ceramic microfiltration of ethanol fermentation broths
… objective of this research was to optimize the ceramic cross-flow microfiltration of ethanol fermentation broths. The ceramic membranes from three different manufacturers were made of $\alpha$-alumina with pore sizes of 0.05 $\mu$m-1.4 $\mu$m. Water permeabilities for the 0.2 $\mu$m Ceraver, …
-
Caratterizzazione di membrane inorganiche per la separazione di idrogeno da gas di reforming
… focused on the characterisation of inorganic membranes for the hydrogen purification from steam reforming gas. Composite membranes based on porous inorganic supports coated with palladium silver alloys and ceramic membranes have been analysed. A brief resume of theoretical laws governing …
-
Controlling ceramic porosity using carboxylate-alumoxane nanoparticles
… of carboxylate-alumoxanes, such as ceramic yield, particle size, pore volume, and pore diameter are dependent upon the carboxylate ligand that is substituted on the surface of the boehmite mineral. Of the synthesized alumoxanes, acetic acid-alumoxane (A-alumoxane), has the smallest …
-
Experimental investigations of oxygen-separating ion transport membranes for clean fuel synthesis
Ion transport membranes (ITMs) are dense ceramic membranes which have the potential for 100% selective separation of oxygen from air. ITMs operate at extreme temperatures (>800°C), necessary for the mobility of lattice oxygen ions: this can result in significant experimental challenges. …
-
Characterization of amorphous silica and crystalline silica from rice husk ash on water filtration application
… is dealing with high-cost production to develop ceramic membranes and has been using expensive material to make the filtration system works. In order to challenge the issue, the preparation of ceramic water filtration at low-cost production and using an effectively silica from natural waste rice …
-
Experimental study and modeling analysis of ion transport membranes for methane partial oxidation and oxyfuel combustion
… technologies, such as intermediate-temperature ceramic membranes, operating under reactive conditions, promise to ameliorate both. Challenges include the long term stability of the material, reactor design and integration into the overall system. The goal of this thesis is to develop a framework …
-
Design and testing of an integrated catalytic membrane reactor for deoxygenating water using hydrogen for down-hole injection and process applications.
… osmosis. In this study, inorganic tubular ceramic membranes with highly dispersed catalytic metals: palladium and platinum were produced on both meso and macro porous membranes. They were characterised and tested in membrane reactors by feeding hydrogen saturated water under varying …
-
Combined Hydrogen and Oxygen transport membranes in the activation of Methane
Dense ceramic membranes have been extensively studied for gas separation and as reaction supports for significant environmental processes. In the work presented in this thesis, yttrium/zirconia doped barium cerate (BaCe0.8Y0.2O3-δ- BCY20 and BaCe0.6Zr0.2Y0.2O3-δ- BCZY) powders were synthesised …
-
Understanding the Toxicity Effects of Nanostructures: I. Effect of Physico-chemical Properties on Environmentally Relevant Organismal Toxicity. II. Design of Novel Nanostructures to Reduce Environmental Toxicity while Retaining Functional Properties
… oxide was studied as a surface coating for ceramic pot water filtration devices (CPWFDs). GO was covalently attached to the ceramic membrane surface using linker chemistry. The ceramic membranes were challenged with Esherichia coli to determine their bacterial removal efficiency. Hydraulic …
-
Gas diffusion transport characteristics and mathematical description of membrane systems with application for biogas upgrading.
… carbon dioxide gases flow distinctively through ceramic membranes with different physico-chemical properties. Permeation tests were carried out under various operating conditions of temperature (up to 100 degrees Celsius) and pressure (up to 3 bar), using membranes of different pore sizes and …
-
Dry reforming of associated natural gas using catalytic membrane reactors.
… and chemical structure of such Hybrid Ceramic Membranes (HCMs) were characterised using various methods, including gas permeability measurement, Scanning Electronic Microscopy (SEM), Accelerated Surface Area and Porosimetry analysis (ASAP), nitrogen Adsorption, Energy Dispersive X-ray …