منابع مشابه
Micro Counter-current Flow System for Highly Efficient Extraction
We demonstrated micro counter-current flow in a glass microchip utilizing surface modification patterning method to control surface tension. In order to visualize the micro counter-current flow, fluorescent microparticle dispersion solutions were observed by fluorescence microscopy. When the flow volume ratio of water and organic solution was changed, the switching point of flow direction was o...
متن کاملComparison of Co-Current and Counter-Current Flow Fields on Extraction Performance in Micro-Channels
Several applications such as liquid-liquid extraction in micro-fluidic devices are concerned with the flow of two immiscible liquid phases. The commonly observed flow regimes in these systems are slug-flow and stratified flow. The latter regime in micro-channels has the inherent advantage that separation of the two liquids at the exit is efficient. Recently extraction in a stratified counter-cu...
متن کاملImprovement of the Solvent Extraction of Rhenium from Molybdenite Roasting Dust Leaching Solution using Counter-current Extraction by a Mixer-settler Extractor (TECHNICAL NOTE)
Continuous counter-current extraction of rhenium from roasting dust leach liquor was carried out using a mixer-settler extractor. Tributylphosphate was used as the extractant diluted in kerosene. The effects of the flow rates and extraction stages number were investigated. The extraction efficiency was affected by the flow rates of the aqueous and organic phases, and its mechanism was qualitati...
متن کاملFractal counter-current exchange networks
We construct a general analysis for counter-current exchange devices, linking their efficiency to the (potentially fractal) geometry of the exchange surface and supply network. For certain parameter ranges, we show that the optimal exchanger consists of densely packed pipes which span a thin sheet of large area, which may be crumpled into a fractal surface and supplied with a fractal network of...
متن کاملEfficient new method for extraction and isolation of three flavonoids from Patrinia villosa Juss. by supercritical fluid extraction and high-speed counter-current chromatography.
Supercritical fluid extraction (SFE) of orotinin, orotinin-5-methyl ether and licoagrochalcone B from Patrinia villosa was performed. The optimization of parameters including pressure, temperature, modifier and sample particle size on yield was carried out using an analytical-scale SFE system. The process was then scaled up by 100 times using a preparative SFE system under the optimized conditi...
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ژورنال
عنوان ژورنال: Journal of Synthetic Organic Chemistry, Japan
سال: 1957
ISSN: 0037-9980,1883-6526
DOI: 10.5059/yukigoseikyokaishi.15.306