Double Emulsion (Water-in-Oil-in-Water) System in Succinic Acid Extraction - A Stability Study (original) (raw)
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Malaysian Journal of Fundamental and Applied Sciences
The stability of emulsion is crucial in the emulsion liquid membrane (ELM) process. It has been discovered that the size of emulsion droplets and globules is related to ELM stability and can be predicted using a correlation model. In this study, the best correlation for the emulsion size prediction was determined for ELM extraction of succinic acid. Several parameters affecting the emulsion sizes and stability including emulsification speed, emulsification time, agitation speed, and treat ratio were evaluated. A new correlation for the succinic acid system was obtained that fit experimental data between 0.1-0.5 dispersed phased holdup fraction. From the study, the Weber number depended on the emulsification speed, emulsification time, and agitation speed, which consequently affected the predicted emulsion size. This study demonstrates that mathematical correlations can be used to predict the size of emulsion droplets and globules in the ELM process of organic compound extraction.
Extraction of succinic acid from real fermentation broth via emulsion liquid membrane
2018
Succinic acid is listed as one of the twelve building block chemicals based on the ease of production through a biotechnological approach and potential to derive various chemicals. The application of bio-based succinic acid is still limited due to high downstream processing costs. One of the potential methods to recover succinic acid is emulsion liquid membrane (ELM). The ELM system consists of three main liquid phases; external feed, membrane, and internal. In this study, the membrane phase was prepared by dissolving Amberlite LA2 as a carrier, sorbitan monooleate (Span 80) and polyoxyethylenesorbitan monooleate (Tween 80) as surfactants in commercial grade palm oil, while the internal phase comprised of sodium carbonate solution, Na 2 CO 3 . The influence of emulsifying time, agitation speed, and agitation time on the water-in-oil-in-water (W/O/W) emulsion stability were studied. The most stable condition was implemented on various external phase concentrations to study the extrac...
Food and Bioproducts Processing, 2019
Succinic acid has been recognized as a useful platform chemical that can be applied in various industries. The application of bio-based succinic acid is still limited due to high downstream processing cost. In this study, vegetable oil-based emulsion liquid membrane (ELM) process is proposed to recover succinic acid from fermentation broth. The ELM system consists of three main liquid phases; external feed, membrane, and internal stripping. The liquid membrane phase was prepared by dissolving Amberlite LA2 and Span 80 in palm oil, while, the internal phase comprises of sodium carbonate solution, Na 2 CO 3. The influence of feed, stripping agent and carrier concentration, treat ratio, as well as liquid membrane recycling on ELM performance were studied. The results showed 10 g/L of initial concentration, 1.0 M of Na 2 CO 3 , 0.7 M of Amberlite LA2, and treat ratio of 1:5 is the best condition with almost 100% recovery and enrichment of 21 times. The recycled liquid membrane concentrates the succinic acid up to 12 times. Therefore, the proposed ELM is a potential technology to extract bio-succinic acid.
Extraction of Succinic Acid from Real Fermentation Broth by Using Emulsion Liquid Membrane Process
2018
Succinic acid is listed as one of the twelve building block chemicals based on the ease of production through a biotechnological approach and potential to derive various chemicals. The application of bio-based succinic acid is still limited due to high downstream processing costs. One of the potential methods to recover succinic acid is emulsion liquid membrane (ELM). The ELM system consists of three main liquid phases; external feed, membrane, and internal. In this study, the membrane phase was prepared by dissolving Amberlite LA2 as a carrier, sorbitan monooleate (Span 80) and polyoxyethylenesorbitan monooleate (Tween 80) as surfactants in commercial grade palm oil, while the internal phase comprised of sodium carbonate solution, Na2CO3. The influence of emulsifying time, agitation speed, and agitation time on the water-in-oil-in-water (W/O/W) emulsion stability were studied. The most stable condition was implemented on various external phase concentrations to study the extraction...
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One of the major obstacles to the application of emulsion liquid membranes to industrial separations is the stability of emulsion globules. Stability of emulsion is affected by two phenomenasglobule rupture and osmotic swell. Interfacial shear between the continuous and membrane phase causes the liquid membrane to thin and, in some cases, rupture, thereby affecting separation. Destabilization phenomena affecting the homogeneity of dispersions are emulsion globule migration (creaming, sedimentation) and size variation or aggregation (coalescence, flocculation). In the present study, the stability of an emulsion liquid membrane is studied by varying different parameters, for example, internal acid phase and surfactant concentration and stirrer speed for emulsification. Dispersion destabilization of the emulsion is detected by Turbiscan. Properties such as interfacial tension, drop size distribution, photomicrographs, and zeta potential are also analyzed to evaluate emulsion stability. A stable emulsion is used for the removal of aromatic amines from aqueous solutions. An advancing reaction front model considering competitive transport of aromatic amines has been proposed to simulate data. The simulated curves are found to be in good agreement with the experimental data.
Analysis of Composite Membranes in the Separation of Emulsions Sunflower oil/water
Materials Research
Oil is a major pollutant of water resources, affects aquatic life, causing environmental degradation. Currently there is an increase in studies of membrane applied to separation of oil-water. Among these membranes, there are composite membranes, which show as main characteristic an association of organic and inorganic membrane properties. In a tangential flow process, the ceramic tube (support) is responsible for the mechanical strength of the membrane and the selective barrier property of the membrane is established by the polymer. The aim of this work is the application of α-alumina/ polyamide 66 composite membrane in the retention of sunflower oil from oil-water emulsions and the study of resistance of such membranes in ultrafiltration processes. The α-alumina ceramic tubes were impregnated internally with a solution of polyamide 66 (PA66) (5% w/v) and tested with distilled water and sunflower oil solutions at concentrations of 50, 100 and 200 mg•L-1. Membranes impregnated with PA66 showed a sunflower oil retention between 53.5 and 99.5% and superior membrane resistance (MR) to the permeate flux (1.92 x 10 13 a 5.52 x 10 13) which explains the decrease in the permeate volume.
Experimental Investigation of Emulsion Stability in Gas/Oil Separation Plants
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Water-in-oil-in-water (W/O/W) emulsion instability in emulsion liquid membrane: membrane breakage
Journal of Physics: Conference Series, 2019
Water-in-oil-in-water (W/O/W) emulsion system in Emulsion liquid Membrane (ELM) consist of three main phases which are membrane phase, internal phase and external phase. However, ELM performance is reported to be heavily affected by the emulsion stability. Instability of emulsions occurred as a result of metastable colloids that are made of two immiscible liquids, where one being dispersed in the other with the presence of surface-active agent. Membrane breakage was identified as one of the causes of emulsion instability. This research work focuses on identifying best condition that records minimal breakage hence, high efficiency of solute removal can be anticipated. Influence of homogenization time and speed, carrier concentration and surfactant concentration on membrane breakage were investigated. Data recorded shows that the emulsion needs to be homogenized at 8000 rpm for 15 mins to obtain minimal breakage of membrane. On top of that, membrane phase consists of 4 wt% of carrier ...
Eurasian Chemico-Technological Journal, 2019
The Institute of Combustion Problems, in conjunction with the Kazan National Research Technological University, is carrying out research in the process of dehydration, desalination, transportation and primary processing of oil. In the course of the research, the methods used to determine the wetting and washing capacity, as well as the dispersion analysis of oil dispersed systems, were developed in the Institute. In order to change the viscosity and fractional composition of high-viscosity oils for improvement of further works, there is used an electrohydraulic action technology. It is established that the object of investigation is high-viscosity and heavy oil, is capable to form a stable commercial emulsion system in the collection system. The average size of water globules in oil is 9.8 μm and aggregate resistance is 89.3%. Experimental modeling of the universal emulsion of oil dispersion system is suitable for further study of the demulsification processes of water-oil emulsion,...
The objective of this study is to investigate ultrafiltration polyethersulfone (PES) membrane for oil-in-water emulsion removal. Flat sheet polyethersulfone (PES) membrane was fabricated and characterized. Ultrafiltration membrane was fabricated using a dry/wet phase inversion technique. The work was performed to investigate the effect of incorporating polyvinylpyrrolidone (PVP) and polyethylene glycol (PEG). Polyethersulfone (PES) membrane which had been modified for higher porosity and hydrophilicity through the use of polyvinylpyrrolidone (PVP) and polyethylene glycol (PEG) for removal of oil from the oily wastewater. The performances of different (PES) membranes were evaluated by treating with pure water. Tween 20 surfactant was used to develop high surface pressure in emulsion interface to make oily waste water. Membrane characterization were performed using Field Emission Scanning Electron Microscopy (FESEM), energy dispersive X-rays (EDX), pure water permeation (PWP), UV-VIS Spectrophotometer. The experimental results showed that oil rejection using PES membrane were over 98% and oil concentration in the permeate was below 2 mg/L from 100 mg/L, which met the requirement for discharge. It was concluded that the ultrafiltration (UF) PES membranes incorporating PEG and PVP was developed oil filtration from wastewater.