Ultrafiltration of oil-in-water emulsions with ceramic membranes: Influence of pH and crossflow velocity

Lobo, Anna Picinelli; Cambiella, Ángel; Benito, José M.; Pazos, Carmen; Coca, José

doi:10.1016/j.memsci.2005.11.016

Cited by 169 publications

(107 citation statements)

References 24 publications

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“…Oils lose their functional properties in time, because of the severe operating conditions and the presence of contaminants and must therefore, be replaced. The disposal of a large volume of oily wastewater would impose places a significant burden on the environment, and hence removal of the oil (2-10 vol.% of the total waste [1]) and other pollutants is required before disposal [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Investigation of parameters affecting the ultrafiltration of oil-in-water emulsion wastewater

Kiss

Kertész

Beszédes

et al. 2013

Desalination and Water Treatment

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Section: Introductionmentioning

confidence: 99%

Investigation of parameters affecting the ultrafiltration of oil-in-water emulsion wastewater

Kiss

Kertész

Beszédes

et al. 2013

Desalination and Water Treatment

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“…Because wastewater including o/w emulsion has influences on aqueous environments, for removal of oil droplets from aqueous environments, several techniques have been proposed, such as filtration (Belkacem et al, 1999;Hilal et al, 2004;Lobo et al, 2006;Hu et al, 2007), chemical destabilization (Rios et al, 1998), dissolved air flotation (Abo-El Ela et al, 1980;Fukushi et al, 1998;Zouboulis et al, 2000;Al-Shamrani et al, 2002a;Al-Shamrani et al, 2002b), electrocoagulation (Carmona et al, 2006;Cañizares et al, 2008), flotation (Maruyama et al, 2009) and so on.…”

Section: Introductionmentioning

confidence: 99%

Removal kinetic model of oil droplet from o/w emulsion by adding methylated milk casein in flotation

2012

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In this study, o/w emulsion flotation experiments were conducted by with adding methylated milk casein (MeSC). Emulsion used in this study was prepared by ultrasonic emulsification of heavy oil (bunker-A) and sodium dodecyl sulfate (SDS) solution. A simple kinetic model was proposed to estimate the removal rate of the oil droplets within the column. The model was based on main assumption that adsorption of single droplet adsorbed MeCS or floc onto bubble surface within flotation column. Removal rate constant, K, was defined by k a X s (S b  /V), where k a and X s are overall adsorption rate and saturated adsorption density of oil droplet or floc, S b ,  and V are bubble surface production rate, retention time of bubble swarms and emulsion volume within the column, respectively. The experiments were conducted with varying operating conditions; superficial gas velocity, column dimension and emulsion volume. K was evaluated from slope value of obtained straight line by plotting time versus ln(T/T 0 ), where T/T 0 is relative turbidity. K was mostly proportional to (S b  /V), which corresponds to specific surface area of bubble swarms per unit volume within the column, in the present experimental region. This result suggested that efficiency of this removal process was mainly controlled by the specific surface area of bubble swarms, and proposed model was fundamentally verified.

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“…The gelatin powder was dissolved in distilled water, heated to the temperature of 50°C, and mixed until a uniform consistency was obtained. The gelatin concentration was 2.5 g/dm 3 . To form a dynamic layer of gelatin, the solution of gelatin with the volume of 50-200 ml was filtered through the membrane at the pressure of 100 KPa.…”

Section: Methodsmentioning

confidence: 99%

“…[12][13][14] Ultrafiltration became the most popular one. [3,12,13] Dynamic membranes have high porosity due to the layer of deposited material particles. Thus, water permeability is achieved, which becomes one or two orders higher than the permeability of polymeric membranes.…”

Section: Research Articlementioning

confidence: 99%

“…Membrane methods, [1][2][3][4][5][6] which have a high degree of retention and low energy costs in comparison with evaporation and vacuum distillation methods, are often used in the cleaning and the recycling of used emulsions. It is known that the initial LCL is a multicomponent emulsified system that contains mineral and synthetic oils, emulsifiers, corrosion inhibitors, biocides, and other components.…”

Section: Introductionmentioning

confidence: 99%

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Фазуллин¹

2017

IJGP

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Introduction: According to the study of water-oil emulsion, chemical composition, and properties of oil-in-water type, they proposed the method of membrane separation for emulsion petroleum products (PPs). To increase the degree of PP separation from a water-oila emulsion, they offered the method of a dynamic layer application to the surface of a microfiltration membrane. Research Tasks: Nylon-gelatin dynamic membranes with a different content of the gelatin layer 1.6-6.3% (by weight) were obtained on the membrane surface by the filtration of colloidal gelatin solution through the nylon membrane with the particle sizes of the dispersed phase from 13 to 4153 nm. Methods: Using the wetting surface droplet method, it is determined that the initial nylon and the modified nylongelatin membrane have the properties of a hydrophilic surface, which effectively separates oil-in-water emulsions. Results: It was found that the specific productivity of the modified membrane decreased by 4.5 times after the application of a dynamic layer of gelatin. It was determined that the degree of PP separation from an emulsion with an initial nylon membrane makes no more than 46.7%. Conclusion: Moreover, after the modification, the degree of separation increased to 51%, depending on the amount of gelatin containing on the membrane surface. The maximum degree of WOE PP separation makes 97.4% with the gelatin content of 6.3% (by weight).

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Ultrafiltration of oil-in-water emulsions with ceramic membranes: Influence of pH and crossflow velocity

Cited by 169 publications

References 24 publications

Investigation of parameters affecting the ultrafiltration of oil-in-water emulsion wastewater

Investigation of parameters affecting the ultrafiltration of oil-in-water emulsion wastewater

Removal kinetic model of oil droplet from o/w emulsion by adding methylated milk casein in flotation

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