Global ETD Search
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Showing 1 to 12 of 12 for “"hydrodynamic cavitation"”.
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Enhancement of wastewater and sludge treatment processes by hydrodynamic cavitation
In the past decades, hydrodynamic cavitation (HC) process was the subject of study by many researchers worldwide. This phenomenon was widely studied in order to understand the reason of its negative effects on hydraulic machinery such as pumps,turbines, valves, etc. Many efforts were made in order …
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Hydrodynamic cavitation for effluent treatment: using vortex-based cavitation devices
Hydrodynamic cavitation is the formation, growth and collapse of vapour/gas-filled cavities. The collapsing cavities result in intense shear and formation of hydroxyl radicals thereby leading to physicochemical transformations. These physicochemical effects can be utilised for a variety of …
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Experimental study and characterization of bubble behaviors in the orifice-induced hydrodynamic cavitation
… the development process of orifice-induced cavitation and transitional bubble behaviors. The transition from non-cavitation to fully developed cavitation was carefully studied. Cavitation bubble clouds were observed at orifice, indicating the inception of cavitation. The number of bubbles …
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A detailed investigation of microbial cell disruption by hydrodynamic cavitation for selective product release
Hydrodynamic cavitation is a novel method for microbial cell disruption, mediated by intense pressure fluctuations caused by cavity oscillation and collapse. Selective release of intracellular microbial products is desirable to reduce the cost involved in their downstream processing. A study of the …
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Optimization of oil extraction from pomegranate seeds using ultrasound and hydrodynamic cavitation and characterization of bioactive profile
Η παρούσα μελέτη διερεύνησε τη βελτιστοποίηση της εκχύλισης ελαίου από σπόρους ροδιού μέσω της εφαρμογής δύο καινοτόμων και βιώσιμων τεχνολογιών σπηλαίωσης, της υπερηχητικής σπηλαίωσης και της υδροδυναμικής σπηλαίωσης. Στόχος της μελέτης ήταν η αξιολόγηση και σύγκριση της αποδοτικότητας των …
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Inactivation of Thermodynamic Sporeformers and Spores in Skim Milk by Continuous Ultrasonication and Hydrodynamic Cavitation in Combination with Thermal Treatments
… the effectiveness of ultrasonication and hydrodynamic cavitation, in a continuous mode, alone and in combination with thermal treatments, on heat resistant aerobic sporeformers and spores in skim milk, and skim milk concentrate. The first study was conducted to investigate the …
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Advanced oxidative wastewater treatment using cavitational reactors
… in conjunction with a variety of acoustic and hydrodynamic cavitational reactors. There have been many reports in the literature on the use of hydroxyl radicals as the core part of AOPs and hence, as the first objective, the amount of hydroxyl radical generation from different acoustic and …
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Methods for removing pharmaceuticals from human urine
… granular activated carbon, hydrogen peroxide and hydrodynamic cavitation. The pharmaceuticals investigated for this work were grouped into two categories: over the counter (OTC) common pharmaceuticals and the antiretrovirals (ARVs). The OTCs are used to treat a variety of common ailments such as …
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Impact of New Processing Technologies on the Physical and Functional Properties of Skim Milk and Skim Milk Concentrate
… to explore impact of new processing technologies hydrodynamic cavitation (HC) and carbon dioxide (CO2) injection on physical and functional properties of skim milk and skim milk concentrate (SMC) respectively. In one of the experiment it was found that HC had little effect on casein micelle size …
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Bubble Size Effects in Coal Flotation and Phosphate Reverse Flotation using a Pico-nano Bubble Generator
… mum, which can be produced using ultrasonic or hydrodynamic cavitation method. A fundamental analysis has shown that pico-nano bubbles will serve as a secondary collector, bridging between hydrophobic particles and conventional sized bubbles, which can significantly improve the flotation …
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Zooplankton Dynamics in Wastewater Treatment High Rate Algal Ponds and development of effective control methods
… mechanical disruption of zooplankton using hydrodynamic shear stress, and the mechanical removal of zooplankton using filtration, using controlled laboratory conditions; 4) validated chronic CO₂ asphyxiation of zooplankton, the biocontrol of rotifers using the cladoceran M. tenuicornis and …
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Understanding the Impact of Non-thermal Processing and CO2 Assisted Extrusion on Antioxidant, Textural and Functional Properties of Corn, Sorghum and Apple Pomace Based Extrudates
<p>Currently, there is a worldwide demand for antioxidant rich foods in diet, especially ready to eat foods, i.e. cereals and snacks. In recent years, the research has got momentum to valorize the underutilized crops, i.e. millet, sorghum and industrial food by-products, i.e. fruit pomace to …