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 20 of 43 for “"high solids"”.
-
Synthesis and Chacterization of Novel Polybenzimidazoles and High-Solids Meta-Polybenzimidazoles
… operation. PEM fuel cells that operate at high temperatures (> 120oC) have advantages over low temperature PEM fuel cell systems such as faster electrode kinetics, increased tolerance to gas impurities, simplified water management systems, and utilization of generated heat. One of the most …
-
Settling characteristics of particles in a suspension of medium to high solids concentration
… process of sludges with intermediate to high solid concentrations three settling regimes are typically encountered, namely, zone, transition, and compression regimes. Recent studies have indicated that the validity of Kynch's formulation, which is the most widely used for sizing settling …
-
Enhancing hydraulic performance of a multi-stage anaerobic digester for high solids cattle manure
… many economic challenges when being applied to high solids substrate such as dry-lot cattle manure. In Colorado and the rest of the arid west, feedlot practices and dry climate combine to form a waste product that is very high in total solids (TS) content, from 50% up to 90% TS. Since the most …
-
An assessment of oxygen availability, iron build-up and the relative significance of free and attached bacteria, as factors affecting bio-oxidation of refractory gold-bearing sulphides at high solids concentrations
… concentrates have commonly been operated at solids concentrations of between 18 and 20 per cent (m/v) (Le 180 and 200 kg.m-3). At higher concentrations, a decline in the bio-oxidation rate has been observed. Other metallurgical processes, such as chemical leaching and cyanidation, are …
-
Carboxymethylcellulose Acetate Butyrate Water-Dispersions as Renewable Wood Adhesives
… acetate butyrate (CMCAB) polymers, high and low molecular weight (MW) forms, were analyzed in this study. High-solids water-borne dispersions of these polymers were studied as renewable wood adhesives. Neat polymer analyses revealed that the apart from MW, the CMCAB systems had …
-
In-Plant Testing of the Hydrofloat Separator for Coarse Phospahte Recovery
… the hydrophilic particles are rejected as a high solids content (65-70%) underflow. The fluidized bed acts as a "resistant" layer through which no bubble/particle aggregates can penetrate. As a result, the HydroFloat also acts as a density separator that is capable of treating much coarser …
-
Enzymatic and process technologies to increase corn dry grind slurry solids
In conventional dry grind process, high glucose concentrations (>15% w/w) and liquefaction viscosities restrict slurry solids contents to 30 to 32% w/w. High slurry solids fermentations (above 33%) are important in reducing energy costs; decreased water input results in less evaporation, …
-
Characterization of Black Liquor Sprays for Application to Entrained-Flow Processes
… between and characteristics of water and high solids, heated black liquor sprays from air-assist atomizers are examined. Sprays were imaged with a high speed camera and the images analyzed with computer code to produce droplet size data and macroscopic spray characteristics such as mass …
-
Rheological effects on gas dispersion in a pilot scale mechanical flotation cell
… tend to run flotation circuits at fairly high solids concentrations in order to maximise residence time, accommodate higher tonnages and limit water consumption. Mineral slurries processed at fine particle sizes and high solids concentrations have been shown to exhibit non-Newtonian …
-
Impact of New Processing Technologies on the Physical and Functional Properties of Skim Milk and Skim Milk Concentrate
… manufacturing. HC without involving heating at higher flow rates had a positive effect on rennet coagulation time. In another experiment effect of CO2 injection technology to modify the pH of skim milk concentrate and decrease the apparent viscosity of high solids SMC was studied. This …
-
Mechanisms of Methanogenic Inhibition in Advanced Anaerobic Digestion
… range of treatment temperatures, and mesophilic high solids digestion of thermally pretreated wastewater sludge (THD) were carried out. Enhanced digestion performance in terms of solids destruction and methane generation by THD relative to MAD was achieved, and was largely attributable to the …
-
Flash heating of epoxy-based corrosion inhibitor thin films on aluminum substrates
… with increasing heating rates. This coating is a high solids epoxy primer manufactured by Deft Inc. A xenon flash lamp was focused to a one-inch diameter spot size on two types of aluminum substrates; AA2024-T4 and AA7075-T3. Edge effects were not considered for modeling. A ceramic firebrick …
-
The Effect of Cations on Volatile Solids Destruction, Odors, and Dewatering in anaerobic digestion
… of wastewater sludge feed cations on volatile solids destruction, odor control, and dewaterability. The role of influent feed cations and addition of chemical coagulants to sludge were evaluated for those characteristics following anaerobic digestion. Wastewater sludge samples were obtained …
-
Anaerobic digestion comparison of manure leachate by high-rate anaerobic reactors
… digester (MSAD) has been developed to obtain high organic leachate from high solids organic waste, thus high-rate anaerobic reactors can be fed by manure leachate, which can be obtained from a leachate bed reactor. Such configuration not only makes feasible the application of high-rate …
-
Investigations of biphasic seeded emulsion polymerizations in a continuous tubular reactor
… had been successful in producing low solids contents material, it failed at producing industrial-grade latex (>30 w%) due to the accumulation of solids (fouling) against the reactor’s inside wall that ultimately caused the clogging and total failure of the reactor. Therefore, there was …
-
Variations of Vibrio Populations in Pacific White Shrimp, <i>Litopenaeus vannamei</i>, Aquaculture Raceways
… data were compared to two levels of bio-floc solids removal in addition to physical and chemical tank parameters such as temperature, ammonia, nitrite, nitrate and phosphate. The total bacteria gene copy abundances were higher (<em>p</em> = 0.0081) in the low solids tanks but the quantity of …
-
Manufacture, Concentration, and Functionality of Micellar Casein Concentrate
… The third part evaluates heat stability of the high concentration MCC produced by WFE. In part 1, the primary objective was to achieve >25% total solids (TS) without a loss of water removal rate associated with high solids materials. This is of importance, industrially, as this could reduce …
-
Non-Aqueous Dispersion Polymerization for Automotive Coating Applications
… the semibatch process. The dispersion features high solids (50-60 wt%) of higher molecular weight acrylic polymer, with the polymeric nanoparticles sterically stabilized by low molecular weight dispersant polymer chains anchored to the particle surface either by chemical or physical interaction. …
-
"Sump-Inlet" deployment linkage design for sargassum ocean sequestration (SOS)
… seawater through a suction hose to an onboard solids pump, which then transports the sargassum to a depth where the hydrostatic pressure renders the sargassum negatively buoyant. One inlet device, discussed in Gray's thesis, is called the "sump-inlet" which operates much like an oil skimmer, …
-
Rheology of Filled and Unfilled Polyurethanes for Reactive Extrusion-Based Applications
… material extrusion (MatEx) of thermoplastic or high viscosity composite materials. Because of its ability to reduce material waste while printing complex geometries, AM has the potential to revolutionize the manufacturing industry for a diverse set of materials and products. MatEx of …
Page 1 of 3