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Comparison of Ultrasonic Distillation to Sparging of Liquid Mixtures

机译:超声蒸馏与液体混合物喷射的比较

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摘要

The application of intense ultrasound to a liquid-gasninterface results in the formation of an ultrasonic fountainnand generates both mist and vapor from the liquid. Here,nthe composition of the vapor and aerosol above annultrasonic fountain is determined as a function of irradiationntime and compared with the results of sparging fornfive different solutions. The experimental apparatus forndetermining the efficiency of separation consists of a glassnvessel containing a piezoelectric transducer driven atneither 1.65 or 2.40 MHz. Dry nitrogen is passed over thenultrasonic fountain to remove the vapor and aerosol. Thencomposition of the liquid solutions are recorded as anfunction of irradiation time using gas chromatography,nrefractive index measurement, nuclear magnetic resonance,nor spectrophotometry. Data are presented fornethanol-water and ethyl acetate-ethanol solutions, cobaltnchloride in water, colloidal silica, and colloidal gold. Thenexperiments show that ultrasonic distillation producesnseparations that are somewhat less complete than whatnis obtained using sparging.
机译:将强力超声波施加到液-气界面会导致形成超声波润版液,并从液体中产生雾气和蒸气。在此,确定了在超音波喷泉上方的蒸气和气溶胶的成分与照射时间的函数关系,并将其与喷射不同溶液的结果进行比较。用于确定分离效率的实验设备由玻璃容器组成,该玻璃容器包含以1.65 MHz或2.40 MHz驱动的压电换能器。使干燥的氮气通过超声喷泉,以除去蒸气和气溶胶。然后使用气相色谱法,折射率测量,核磁共振,分光光度法记录液体溶液的组成随照射时间的变化。给出了乙醇-水和乙酸乙酯-乙醇溶液,水中的氯化钴,胶体二氧化硅和胶体金的数据。然后的实验表明,超声蒸馏产生的分离不如使用喷射获得的分离完全。

著录项

  • 来源
    《Analytical Chemistry》 |2010年第24期|p.10090-10094|共5页
  • 作者单位

    Department of Chemistry and School of Engineering, Brown University, Providence, Rhode Island 02912, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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  • 入库时间 2022-08-17 13:36:52

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