Removal of mixed contaminants from wast water by multistage flotation process
Dissertant
University
University of Technology
Faculty
-
Department
Department of Chemical Engineering
University Country
Iraq
Degree
Ph.D.
Degree Date
2008
English Abstract
An experimental investigation on a synthetic wastewater system containing 500 ppm emulsified oil, 500 ppm of suspended particles (powdered activated carbon and glass powder) less than 50 µm, and 40 ppm dissolved phenol (as a representative chemical) has been carried out using the Multistage Loop Flow MSTLFLO flotation column.
The column consists of three stages of 70 cm long, its diameter 10 cm, the total height of column is 225cm .Three draft tubes are used inside column each of 50 cm long placed cocentrally, where three cone baffles are used to separate between stages.
The loop flow action in the MSTLFLO column provides favorable hydrodynamic conditions, which promotes local in-stage mixing and enhances the bubble-particle contacts, where gas holdup , liquid circulation velocity, frother feeding location were studied.
Two types of frother were used (2-Ethyl Hexanol and Methyl Isobutyl Carbonyl) in concentrations 5, 10, 15, 20 ppm, where 2-EH gave higher gas holdup and removal efficiency at specific operation conditions than MIBC.
Results show that the separation efficiencies of emulsified oil is 93.6 % and for fine panicles 97.3 % for PAC and 98.3% for glass powder and for phenol 96.3 %.
Thus, the potential application of MSTLFLO process for simultaneous removal of mixed pollutants from industrial wastewater has been demonstrated, The rate of separations in MSTLFLO column obeys the non-linear kinetics.
The kinetic constants are correlated in terms of a four-parameter (gas holdup, bubble size, frother concentration, and superficial gas velocity) for each pollutant individually as in the following correlations : k0 = 1.0978-Vg0.887786 * Cf0.135977 * Ɛg 0.004232 * db-0.183345, R=0.97 Kph = 1.027047 * VR0.015483* Cf0.205899 * Ɛg0.056108 *db-0.050414, R=0.93 Kp = 0.492226 * VR0.214597 * Cf0.144048 * Ɛg0.105403 * db-0.215348, R = 0.91 Kg = 0.80579 * VR0.057643 * Cf0.2048 * Ɛg0.0088881 *DB-0.04051, R = 0.93 5ppm < Cf <20ppm 1cm / sec < Vg < 4cm / sec 0.8mm < db < 4mm
Main Subjects
Topics
American Psychological Association (APA)
Abd al-Jabbar, Ahmad Hassan. (2008). Removal of mixed contaminants from wast water by multistage flotation process. (Doctoral dissertations Theses and Dissertations Master). University of Technology, Iraq
https://search.emarefa.net/detail/BIM-304995
Modern Language Association (MLA)
Abd al-Jabbar, Ahmad Hassan. Removal of mixed contaminants from wast water by multistage flotation process. (Doctoral dissertations Theses and Dissertations Master). University of Technology. (2008).
https://search.emarefa.net/detail/BIM-304995
American Medical Association (AMA)
Abd al-Jabbar, Ahmad Hassan. (2008). Removal of mixed contaminants from wast water by multistage flotation process. (Doctoral dissertations Theses and Dissertations Master). University of Technology, Iraq
https://search.emarefa.net/detail/BIM-304995
Language
English
Data Type
Arab Theses
Record ID
BIM-304995