scholarly journals Formation and Stability Study of Nano-Emulsions: BTX- Separation

2009 ◽  
Vol 3 (1) ◽  
pp. 33-40 ◽  
Author(s):  
Jaydeep M. Barad ◽  
Mousumi Chakraborty ◽  
Hans-Jörg Bart
Keyword(s):  
Liquid Membrane ◽  
Stability Study ◽  
Liquid Membranes ◽  
Feed Mixture ◽  
Emulsion Liquid Membrane ◽  
Benzene Toluene ◽  
The Stability ◽  
Separation Performances ◽  
Membrane Mechanism ◽  
Stability Of Emulsion

The selective separation of aromatics (benzene, toluene and p-xylene, BTX) from aliphatic (n-heptane) is investigated using simple permeation and facilitated transport emulsion liquid membrane mechanism. The separation performances, represented by the permeation rate and separation factor, are analyzed systematically by varying the operating parameters. One of the major obstacles to the application of emulsion liquid membranes to industrial separations is the stability of emulsion globules. In the present study, stability of emulsion liquid membrane is studied by varying different parameters e.g. surfactant and feed phase concentration, stirrer speed for emulsification. Dispersion destabilisation of emulsion is detected by Turbiscan. Effects of interfacial tension on internal droplets size and size distribution are also systematically investigated. Stable emulsions under optimal conditions are used for the separation of aromatics (BTX) from aliphatic (n-heptane) in a synthetic feed mixture.

Visual Study on the Effect of Osmotic Pressure on the Morphology of Emulsion Liquid Membrane

2014 ◽  
Vol 881-883 ◽  
pp. 52-56
Author(s):  
Sun Jun Li ◽  
Hong Jing Liu
Keyword(s):  
Osmotic Pressure ◽  
Water Transport ◽  
Liquid Membrane ◽  
Water Diffusion ◽  
Experimental Results ◽  
Emulsion Liquid Membrane ◽  
Internal Phase ◽  
External Phase ◽  
The Stability ◽  
Stability Of Emulsion

The purpose of this paper is to investigate the effect of osmotic pressure on the morphology of emulsion liquid membrane (ELM) by the visual way. The experimental results show that osmotic pressure has great effect on the globules of emulsion liquid membrane through water diffusion between two water phases. When under isotonic pressure, the water transport trend cannot be observed. When osmotic pressure is less than zero, water transfers from the internal phase to the external phase. But when osmotic pressure is larger than zero, water transports from the external phase to the internal phase first by diffusion, then water transports from the internal phase to the external phase by the coalescence. Therefore, it is possible to tailor osmotic pressure between two water phases to keep the stability of emulsion liquid membrane when ELM is used to separate some component.

Study of the Stability of W/O/W-Type Emulsion During the Extraction of Nickel via Emulsion Liquid Membrane

2004 ◽  
Vol 39 (11) ◽  
pp. 2609-2625 ◽  
Author(s):  
Mousumi Chakraborty ◽  
Chiranjib Bhattacharya ◽  
Siddhartha Datta
Keyword(s):  
Liquid Membrane ◽  
Emulsion Liquid Membrane ◽  
The Stability

Extraction of dl-anabasine from Alangium platanifolium root using an emulsion liquid membrane

2015 ◽  
Vol 7 (5) ◽  
pp. 1860-1865 ◽  
Author(s):  
Zhifeng Guo ◽  
Huidan Su ◽  
Ru Cai ◽  
Xiaoli Ma
Keyword(s):  
Experimental Study ◽  
Liquid Membrane ◽  
Liquid Membranes ◽  
Emulsion Liquid Membrane ◽  
Emulsion Liquid Membranes

An experimental study on the extraction of dl-anabasine from Alangium platanifolium root (APR) using an emulsion liquid membranes system (ELMs) has been reported.

scholarly journals Stability of Palm Oil-based Emulsion Liquid Membrane for Succinic Acid Extraction from Aqueous Solution

2017 ◽  
Vol 19 (1) ◽  
Author(s):  
N. Jusoh ◽  
N. Othman
Keyword(s):  
Succinic Acid ◽  
Palm Oil ◽  
Liquid Membrane ◽  
Emulsion Stability ◽  
Fermentation Broth ◽  
Acid Extraction ◽  
Emulsion Liquid Membrane ◽  
Major Drawback ◽  
Oil Emulsion ◽  
The Stability

Emulsion liquid membrane (ELM) process has high potential in the separation of succinic from the fermentation broth. However, the major drawback of this technology is the stability of emulsion globules during the extraction process and the chemical involved in the liquid membrane formulation. This study investigate the stability of ELM using a greener formulation containing Amberlite LA-2 as a carrier, Span 80 and Tween 80 as a surfactant, palm oil as a diluent and sodium carbonate (Na2CO3) as an aqueous stripping agent. The emulsion stability was evaluated by observing the water-oil separation of the emulsion and microscopic image of emulsion droplets count and size. Several operating parameters including the organic to internal ratio, homogenizer speed, homogenizing time, and surfactant concentration, and surfactant blend were investigated. The results show the most stable water-in-oil emulsion was observed at 3:1 organic to internal ratio; 7000rpm homogenizer speed; 5 minute emulsification time; 3% (w/v) surfactant at HLB 8. Besides, the extraction study shows 70% of the succinic acid was extracted at 0.01M Na2CO3, 1:3 treat ratio, and 0.7M Amberlite in palm oil at optimum primary emulsion stability conditions. This indicates the potential of using palm oil based ELM for the extraction of succinic acid.

Stability of emulsion liquid membrane using bifunctional diluent and blended nonionic surfactant for phenol removal

2020 ◽  
Vol 148 ◽  
pp. 107790 ◽  
Author(s):  
Muhammad Bukhari Rosly ◽  
Norela Jusoh ◽  
Norasikin Othman ◽  
Hilmi Abdul Rahman ◽  
Raja Norimie Raja Sulaiman ◽  
...  
Keyword(s):  
Nonionic Surfactant ◽  
Liquid Membrane ◽  
Phenol Removal ◽  
Emulsion Liquid Membrane ◽  
Stability Of Emulsion

scholarly journals Stability of water-in-oil emulsion in liquid membrane prospect

2017 ◽  
Vol 12 (3) ◽  
Author(s):  
Norela Jusoh ◽  
Norasikin Othman
Keyword(s):  
Surfactant Concentration ◽  
Liquid Membrane ◽  
Extraction Process ◽  
Single Step ◽  
Green Solvent ◽  
Emulsion Liquid Membrane ◽  
Oil Emulsion ◽  
The Stability ◽  
Stability Of Water ◽  
Water In Oil Emulsion

Emulsion liquid membrane (ELM) process have shown a great potential in wide application of industrial separations such as in removal of many chemicals, organic compounds, metal ions, pollutants and biomolecules. ELM promotes many advantages including simple operation, non-equilibrium mass transfer, high selectivity, low energy requirements, and simultaneous extraction and stripping process in a single step process. New development in ELM system incorporated with a green solvent (palm oil) was attempted instead of using commercial organic solvent. The important aspects must be considered for a successful ELM process is the stability of the liquid membrane. In the current work the effect of various parameter which are organic to internal ratio, emulsifying speed, surfactant concentration, and emulsifying time on green ELM stability was investigated. The results show that the most stable emulsion was observed at 3:1 organic to internal ratio, 7000 rpm speed, 3 % (w/v) surfactant concentration, and 5 minute emulsifying time. The emulsion obtained was stable up to 1/2 hour and sufficient and sufficient for extraction process. Therefore, green solvent has high potential to be applied in emulsion liquid membrane process. 

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