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.
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Showing 1 to 20 of 27 for “"membrane process"”.
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A novel membrane process for autotrophic denitrification
… focused on the novel use of hollow fiber membranes for gas delivery in biological dentrification using hydrogen-oxidizing bacteria. Autotrophic denitrification is a biological process that reduces nitrate to nitrogen gas using an inorganic carbon source. Hydrogen gas is an electron donor …
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Design of a microcomputer-based microporous membrane process controller
A microcomputer-based process controller has been developed to produce porous membrane material. The production process is based on stretching the material in a constant temperature solvent bath. This thesis describes the hardware and software designed to direct and monitor the process. A VIC 20 is …
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Auswirkungen von Pulveraktivkohle auf die Nanofiltration von Kläranlagenablauf
Process combinations of powdered activated carbon adsorption and succeeding membrane process are currently under investigation for several different water treatment applications and a few full-scale applications of this kind of process already exist. Since the powdered activated carbon is usually …
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Membrane distillation in dairy processing
Membrane distillation (MD) is a novel membrane process for industry which promises to be a low energy and/or low cost alternative to established separation technologies. The overall objective of this research was the theoretical and experimental investigation of direct contact MD (DCMD) for major …
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Factors required to enhance water recycling at two major Australian industrial manufacturing sites
… consisting of water audit, pinch analysis and membrane process application, was deployed in series to systematically identify water conservation opportunities. Initially, a water audit was deployed to completely characterize all water streams found at each production site. This led to the …
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Designing a Membrane Module for Determining the Permeance of High Fluxing Membranes and the Testing RTIL-Membranes for Dehumidification.
Membrane-based gas dehumidification can have technical energy, and economical advantages over other dehumidification technologies. Because, it is simple to install, ease to operate, and take low process cost. Removal of water vapor from gases constitutes a significant expenditure of energy in our …
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Challege and Opportunities of Membrane Bioelctrochemical Reactors for Wastewater Treatment
… approach for wastewater treatment. Integrating membrane filtration with MFCs could be a viable option for advanced wastewater treatment with a low energy input. Such an integration is termed as membrane bioelectrochemical reactors (MBERs). Comparing to the conventional membrane bioreactors or …
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Development and assessment of a novel osmotic heat engine for energy generation from low-grade heat
… The osmotic heat engine (OHE) is a closed-loop, membrane based process that utilizes low-grade heat and salinity-gradient energy between two streams for electrical energy generation. The OHE couples pressure retarded osmosis (PRO), an osmotically driven membrane process, with membrane …
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Hybrid organic-inorganic pervaporation membranes for desalination
Membrane desalination using reverse osmosis (RO) has been the leading candidate technology for supplying fresh water in recent years. However, there is a strong motivation for improving the established membrane process and/or developing alternative membrane technologies to overcome the limitations …
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Caratterizzazione di membrane da nanofiltrazione
Nanofiltration (NF) is a pressure-driven membrane process, intermediate between reverse osmosis and ultrafiltration. Commercially available polymeric membranes have been used in a wide range of applications, such as drinking, process industry and waste water treatment. For all the applications …
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Continuous Production of Palm Methyl Esters With Recovery of Carotenoids Using Membrane Technology
… are usually destroyed during conventional oil processing. The objective of this research was to develop a new process for recovering carotenoids by converting palm oil into methyl esters through continuous transesterification followed by separation of the carotenoids from the esters using …
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New paradigm to design micro and nano-patterned membranes
… solutions, especially cost and energy efficient processes to desalinate seawater. Reverse osmosis is a membrane process for purification of seawater, invented in 1940's, which has evolved ever since, to become nowadays the most efficient process for desalination. We discuss the shortcomings of …
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The use of isothermal membrane distillation in tomato processing
… paste preparation by the use of isothermal membrane distillation (IMD). Traditional vacuum evaporation processes used for tomato paste production operate at high temperatures for long periods and can cause thermal damage to heat sensitive components and loss of volatile flavour and aroma …
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Assessment of performance and efficiency of membrane distillation for treatment of impaired water and brine with high scaling potential
Water recovery is limited in pressure-driven membrane processes such as reverse osmosis (RO) and nanofiltration (NF) due to increase in scaling risk and osmotic pressure of the feed water with concentration. Membrane distillation (MD) is an emerging thermally-driven membrane desalination processes …
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Immobilized liquid membranes for facilitated transport and gas separation
… Gas separation using facilitated transport membranes has been the subject of considerable research for many years. Immobilized liquid membranes (ILMs) are an important class of facilitated transport membranes. Despite their potential to provide superior performance, they could not achieve …
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Assessing Biofiltration Pretreatment for Ultrafiltration Membrane Processes
… engineered biological filtration (biofiltration) process treating a nutrient-enriched, low-alkalinity, organic-laden surface water downstream of conventional coagulation-clarification and upstream of an ultrafiltration (UF) membrane process was assessed for its treatment effectiveness. The impact …
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Verfahrenskombination von Nanofiltration und Adsorption an Pulverkohle zur kontinuierlichen Abwasserreinigung
… waste waters (e.g. wastewater from textile dying processes or dumpsite leachate) have to be treated because of their high content of poorly biodegradable organics. A treatment process has to provide both a low cost sink for the organic contaminants and a near-complete removal of critical …
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Integrating carbon capture and storage with energy production from saline aquifers
… for capturing CO₂ by amine scrubbing. In the process of injecting dissolved CO₂, compressors and pumps should run to pressurize the CO₂ and brine to be transported and achieve the required wellhead pressure. The preliminary estimations indicate that the produced methane provides more energy …
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