نتایج جستجو برای: bubble column extraction
تعداد نتایج: 251922 فیلتر نتایج به سال:
Mass transfer studies are carried out in a bubble column with an internal diameter of 14 cm and various static liquid heights. The mass transfer coefficient is evaluated by using an oxygen sorption method. A model considering the gas holdup flushing and the sensor response is used. The interfacial mass transfer area is determined according to the measured bubble size distribution. The liquid-si...
We have studied bubble motion within a column of foam allowed to undergo free drainage. We have measured bubble motion upward with time and as a function of their initial positions. Depending on the gas used, which sets the coarsening and drainage rates, different bubble upward motion types have been identified (constant speed, acceleration or deceleration) and explained in relation with liquid...
A homogenate-assisted vacuum-powered bubble extraction (HVBE) method using ethanol was applied for extraction of flavonoids from Phyllostachys pubescens (P. pubescens) leaves. The mechanisms of homogenate-assisted extraction and vacuum-powered bubble generation were discussed in detail. Furthermore, a method for the rapid determination of flavonoids by HPLC was established. HVBE followed by HPL...
Bubble plumes, as main manifestations of seabed gas leakage, play an important role in the exploration natural hydrate and other resources. Multibeam water column images have been widely used detecting bubble plume targets recent years because they can wholly record backscatter strengths. However, strong noises multibeam cause many issues target detection, traditional detection methods are main...
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