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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Extraction in flow through an orifice.

Kornbeck, Eyvind January 1967 (has links)
No description available.
2

The use of automated continuous analysis in the determination of solvent extraction equilibrium constants

Frazier, Willow Marie, 1946- January 1972 (has links)
No description available.
3

Extraction in flow through an orifice.

Kornbeck, Eyvind January 1967 (has links)
No description available.
4

Experimental design for the study of extraction efficiencies of the continuous liquid-liquid extractor /

Kuhn, Jay C. January 1991 (has links)
Report (M.S.)--Virginia Polytechnic Institute and State University. M.S. 1991. / Vita. Abstract. Includes bibliographical references (leaves 57-58). Also available via the Internet.
5

Design of liquid-liquid extractants for the recovery of fuel grade ethanol

Garg, Kul Bhushan 05 1900 (has links)
No description available.
6

Experimental design for the study of extraction efficiencies of the continuous liquid-liquid extractor

Kuhn, Jay C. 20 January 2010 (has links)
<p>An evaluation of a Continuous Countercurrent Liquid-Liquid Extraction (CCLLE) system in conjunction with a Gas Chromatograph Mass Spectrometer for application in trace analysis of Synthetic Organic Compounds.</p> <p>An experiment is designed to test the extraction efficiency of the CCLLE system at less than 1ppb levels. Limitations of the CCLLE system are accessed.</p> <p> Experimental data associated with the extraction efficiency study is included.</p> / Master of Science
7

A comparative study of contacting equipment for the recovery of copper from cupric sulphate solution.

January 2005 (has links)
Ion exchange for the recovery of metals from solutions is a well established process. It features significantly in terms of being able to recover valuable substances from what would otherwise be waste streams as well as recovering substances that could be harmful to the environment if left in the waste stream. The more popular options for ion exchange processes could be batch, fixed bed, fluidized, moving bed, and chromatographic columns. Although most ion exchange processes tend to be batch processes making use of the fixed bed columns, technological developments enable the use of fluidized beds to be explored. The main purpose of this research was to compare the performance of a fixed bed ion exchange system with a fluidized ion exchange system for the recovery of copper from a cupric sulphate solution. By experimentation the bed depth required for each type of equipment (in order to achieve a specified percentage recovery of copper from a specified feed) was determined. The comparative advantage of one type of equipment over the other ensures the correct type of system to be used for a sulphate solution of a particular concentration. This study provides a basis for comparative studies of contacting equipment for the removal of other substances from dilute solutions. / Thesis (M.Sc.Eng.)-University of KwaZulu-Natal, Durban, 2005.
8

Investigation of the effects of the process and equipment parameters on the separation efficiency of a vibrating plate extractor.

Naidoo, Pavanisha. 05 November 2013 (has links)
In the industrial world where many different types of separation processes are available, liquid-liquid extraction is gaining increasing attention, since it offers many advantages over distillation especially for heat sensitive and azeotropic compounds. Liquid-liquid extraction is an essential separation method that applies to the chemical, petroleum, metallurgy, biotechnology, nuclear and waste management related industries. This separation technique also offers potential means of saving energy, thus making extraction a more economical separation process. The effectiveness of a vibrating plate extractor was previously investigated however limited research was conducted on the effect of tray spacing, solvent-to-feed ratio and agitation level on a vibrating plate extraction column. These parameters affect the hydrodynamics and mass transfer in a vibrating plate extraction column therefore the determination of the optimum process parameters is important in achieving the highest efficiency for the column and this is sought after for a vibrating plate extractor. A toluene-acetone-water system was selected for experimental work to be conducted on the vibrating plate extraction column. This test system for liquid-liquid extraction is a standard system proposed by the European Federation of Chemical Engineering. The research aimed at testing the effect of tray spacing, agitation level (product of amplitude and frequency of vibration), and the ratio of flow rates of the phases on the number of stages in order to optimise the efficiency of a vibrating plate extraction column. For the hydrodynamic experiments the dispersed phase holdup, drop size distribution and Sauter mean diameter were evaluated for varying parameters. For the mass transfer experiments the percentage acetone extracted, number of equilibrium stages, mass transfer coefficient and overall efficiency were determined as well as the dispersed phase holdup, drop size distribution and the Sauter mean diameter for varying parameters. A decrease in the holdup occurred for an increase in the solvent-to-feed ratio and an increase in the agitation level resulted in a decrease in the Sauter mean diameter. Results indicated that lower tray spacing resulted in a higher extraction of acetone. Backmixing in the dispersed phase resulted in higher number of stages. / Thesis (M.Sc.Eng.)-University of KwaZulu-Natal, Durban, 2012.
9

The measurement of the position of the interface in a liquid- liquid extractor

Jefcoat, Irvin A. January 1962 (has links)
M.S.
10

The effect of the variation of feed and extract reflux input positions on the operating characteristics of a liquid-liquid extractor

Lohr, John W. January 1948 (has links)
M.S.

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