Adhesion of nylon particles to a quartz plate in an aqueous solution and their removal by electro-osmosis

Gotoh, Kunihito; Inoue, Tetsuo; Tagawa, Mieko

doi:10.1007/bf01490031

Cited by 28 publications

(18 citation statements)

References 9 publications

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“…However, if some relation between these two forces can be found, it may be possible to estimate the adhesion force from the removal force indirectly. It has been reported that the ratio (removal force)/(adhesion force) could be assumed to be about 140 for removal of 50% of nylon particles attached to a quartz wall (Gotoh et al, 1984); the adhesion force was calculated by the heterocoagulation theory and compared with the removal force. At the present time it is impossible to calculate this ratio for a bacterial cell on a quartz wall because of uncertainties, such as separation distance and the contact area.…”

Section: T' ;mentioning

confidence: 99%

“…For this purpose, an electrokinetic method, which has been used for the study of the removal force of non-living colloidal particles (Gotoh et al, 1983(Gotoh et al, , 1984Tagawa & Gotoh, 1986), was adopted to produce smooth liquid-flow resulting in cell removal by its viscous drag. A representative grassland soil isolate, Bacillus sp., was used for the measurement of the removal force from a quartz plate to which the cells were attached.…”

Section: Introductionmentioning

confidence: 99%

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Measurement of the force necessary for removal of bacterial cells from a quartz plate

Morisaki

1991

Journal of General Microbiology

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The force necessary to remove the cells of a bacterium, an isolate (Bacillus sp.) from grassland soil, from a quartz plate was investigated in phosphate buffer solution by using a well-defined liquid flow caused by electroosmosis. The cells were not removed at a specific strength of removal force but removed over a wide range of force, about 10-14-10-12 N per cell. An exponential relation was observed between the removal force and the number of removed cells in media of pH 7.0,8.0 and 9.0; more cells were removed by a smaller force. Experiments in media of different pH values in the range 3-0 to 9.0 showed that greater force was necessary to remove the cells in media of lower pH. The smaller electrostatic repulsion between the bacterial cells and the quartz plate at lower pH values was considered to result in the greater force needed for removal. The relation between the strength of the removal force and the strength of the adhesion force of the bacterial cells was considered. The findings showed that the cell adhesion was reversible and that the adhesion site was located near the end of the cell.

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Section: T' ;mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Measurement of the force necessary for removal of bacterial cells from a quartz plate

Morisaki

1991

Journal of General Microbiology

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“…Heterocoagulation of fine particles is important for many industrial applications, such as separation/deposition/removal of fine particles [37][38][39][40][41][42][43][44][45][46]. The separation of a mixture of fine and ultrafine particles can be performed by mineral processing methods, i.e., flotation [37,38], emulsion flotation [39][40][41], and two-liquid flotation [20,42].…”

Section: Heterocoagulation Of Particle and Non-polar Oil Dropletmentioning

confidence: 99%

Two-Liquid Flotation for Separating Mixtures of Ultra-Fine Rare Earth Fluorescent Powders for Material Recycling—A Review

Otsuki

Dodbiba

Fujita

2018

Colloids and Interfaces

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This paper reviews two separation methods applying two-step two-liquid flotation for recovering ultra-fine rare earth fluorescent powders (i.e., red, green, and blue). The paper aims to extract the science behind separation by two-liquid flotation, and to provide resulting engineering tips for material recycling. Two-liquid flotation, also called liquid-liquid extraction, involves two solvents (i.e., non-polar and polar solvents) to capture hydrophobic/hydrophobized particles at their interface, and a surfactant to selectively modify the surface property of the target powder(s). For separating a three powder mixture, two different developed flowsheets, composed of two-step separation are discussed. The major difference found was the polar solvents used. The first flowsheet (called the aqueous-organic system) employed water as a polar solvent while the second flowsheet (called the organic-organic system) utilized N,N-dimethylformamide, DMF as a polar solvent. The organic-organic system at the optimized conditions achieved both the grade and recovery of all the separated fluorescent powders at greater than 90% while the aqueous-organic system did not satisfy these criteria. This paper also reviews the mechanism behind the separation, as well as performing a cost comparison between the two methods. The cost comparison indicates that the organic-organic system is a more cost effective method for recovering rare earth fluorescent powders than the aqueous-organic system. Since the size of powders (i.e., several µm) is too small for the application of conventional separation technologies (e.g., froth flotation), two-liquid flotation is a unique pathway for the material recycling of ultra-fine rare earth fluorescent powders.

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“…Oleo Sci. 66, (1) 1-11 (2017) 7 soil attached to the substrate 24,25 . The removal of iron oxide particles from the silica plate was investigated under electro-osmotic and Poiseuille flows 26 .…”

Section: Experimental Analysis Of Detergency Phenomena and Investigatmentioning

confidence: 99%

Experimental Analysis of Detergency Phenomena and Investigation of a Next-generation Detergency System

Gotoh

2017

J. Oleo Sci.

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Adhesion of nylon particles to a quartz plate in an aqueous solution and their removal by electro-osmosis

Cited by 28 publications

References 9 publications

Measurement of the force necessary for removal of bacterial cells from a quartz plate

Measurement of the force necessary for removal of bacterial cells from a quartz plate

Two-Liquid Flotation for Separating Mixtures of Ultra-Fine Rare Earth Fluorescent Powders for Material Recycling—A Review

Experimental Analysis of Detergency Phenomena and Investigation of a Next-generation Detergency System

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