Separation of oily water by bubble column.

Takahashi, Terüo; Miyahara, Tetsuhiro; Nishizaki, Yoshinori

doi:10.1252/jcej.12.394

Cited by 30 publications

(10 citation statements)

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“…The gamma function parameters obtained for bitumen recovery differ from those reported by Takahashi et al (1979) for separation of oily water in bubble columns. Our recovery rates were considerably lower than those reported by Takahashi et al (1979) and Behie et al (1983). This suggests that the bitumen we recovered from these tailings was not free but was associated with the solid components of the tailings slurries.…”

Section: Results and Discussion Experimentalcontrasting

confidence: 93%

Flotation kinetics for titanium, zirconium and bitumen recovery from oilsand tailings

1988

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Section: Results and Discussion Experimentalcontrasting

confidence: 93%

Flotation kinetics for titanium, zirconium and bitumen recovery from oilsand tailings

1988

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“…The value QfNad with the most probablevalue of2=3 x 10~3 Jis 1.9 X 10~3 and the theory of Spielman and Fitzpatrik8) predicts the value ofEe to be 40% of that given by Eq. (9), as shown by the broken line in Fig. 5.…”

Section: Comparison With Theoriesmentioning

confidence: 86%

Removal of emulsified oil particles by dispersed air flotation.

Sato

MURAKAMI

Hirose

et al. 1980

J. Chem. Eng. Japan

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Dilute emulsified particles (C-300 g nr3, Z)P~8 /mi) of heavy oil A were removed in a 65 mm-diameter, 0.32 m-deep column with a solution of pH 4 which minimized double-layer repulsion.Firstly, flotation by bubbling through glass frits of three different pore sizes shows that the removal rate is proportional to the oil concentration to the first order at low gas velocity (0.01Û g£0.05 cm s"1) and to the second order at high gas velocity (0.1^Ug^3 cm s"1), This fact implies that the predominant rate step is oil particle-bubble collision in the former region and particle-particle collision in the latter. Mechanical agitation by a paddle gives the same removal rate as bubbling in the high gas velocity region when the power consumption per unit volume is the same. This fact implies that the role of bubbling there is to give adequate turbulence to the liquid. Secondly, the bubble diameter was changed from 40 //m to 2 mmunder the mechanism of bubbleparticle collision by electrolysis, dissolved and bubbling air flotation. With increasing bubble

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“…It was found that the separation efficiency of the multistage column is superior to the conventional columns not only for the dispersed air flotation operation [12] but also for the dissolved air flotation [13] .…”

Section: Continuous Operationmentioning

confidence: 99%

A Study of Multistage/Multifunction Column for Fine Particle Separation

Chiang¹

1999

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ABSTRACT/EXECUTIVE SUMMARYA non-agitated multi-stage column was constructed and applied to wastewater treatment.Preliminary oil/water separation tests were performed. Excellent separation results verifies the multi-function feature of the multi-stage column. Hydrodynamic behavior is considered as the underlying cause for the separation performance. Therefore, a series of experiments were carried out to investigate the hydrodynamic parameters, including gas holdups and liquid circulating velocities. The experimental data will be used to create a mathematical model to simulate the multi-stage column process. The model will further shed light on the future scale-up of the MSTLFLO process.III

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Separation of oily water by bubble column.

Cited by 30 publications

References 1 publication

Flotation kinetics for titanium, zirconium and bitumen recovery from oilsand tailings

Flotation kinetics for titanium, zirconium and bitumen recovery from oilsand tailings

Removal of emulsified oil particles by dispersed air flotation.

A Study of Multistage/Multifunction Column for Fine Particle Separation

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