نتایج جستجو برای: ultrasonic reactor
تعداد نتایج: 57477 فیلتر نتایج به سال:
Background and Objectives: Among the different types of antibiotics, tetracycline antibiotics are the second most common group around the world that their entrance into domestic sewage can result in contamination of water sources. The aim of this study was to investigate the efficacy of the nano-sonocatalytic process on removal of tetracycline antibiotics from aqueous solutions. Materials and M...
Ultrasound assisted phase-transfer catalyzed preparation of ethyl 2-(4-nitrophenoxy)acetate from the corresponding p-nitrophenol and ethyl 2-bromoacetate using the mild solid base, anhydrous potassium carbonate, under very mild conditions is reported. The solid-liquid reactions were performed in a batch reactor equipped with reflux condenser, and ultrasonic irradiations were introduced using an...
The anisotropic, heterogeneous and coarse granular structures of austenitic stainless steel welds lead to important disturbances of the ultrasonic propagation: beam skewing and splitting, attenuation, backscattering and spurious echoes. These disturbances have been studied by EDF R&D for a few years in order to improve the ultrasonic NDT in nuclear applications. In particular, a methodology for...
Abstract When operating bioreactors, monitoring the process temperature is of great importance. Ultrasonic measurement enables this without need for sensors inside bioreactor. The average speed sound can be determined from travel time ultrasonic waves along path known length between a transmitter and receiver positioned in reactor wall. Due to dependence sound, calculated sound. If carried out ...
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