Modeling of the permeation swelling of emulsion during lactic acid extraction by liquid surfactant membranes

Yuanli, Jiang

doi:10.1016/s0376-7388(01)00470-7

Cited by 20 publications

(9 citation statements)

References 15 publications

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“…A good number of papers are available in the literature regarding the extraction of carboxylic acids such as acetic, citric and lactic acids12–16 as well as amino acids such as troptophan, lysine, phenylalanine and glutamic acid17–19 using emulsion liquid membranes. A further advantage of liquid emulsion processes is the creation of very large surface area to volume ratios 20.…”

Section: Introductionmentioning

confidence: 99%

Extraction of alcohol using emulsion liquid membrane consisting of paraffin oil as an organic phase and lecithin as a surfactant

Chanukya

Rastogi

2009

J of Chemical Tech & Biotech

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Section: Introductionmentioning

confidence: 99%

Extraction of alcohol using emulsion liquid membrane consisting of paraffin oil as an organic phase and lecithin as a surfactant

Chanukya

Rastogi

2009

J of Chemical Tech & Biotech

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“…[5,6] Emulsion liquid membranes (ELM) on the other hand exhibit greater potential, particularly in processing dilute feed streams for the separation and removal or recovery of metal ions. [7] ELMs proved to be an effective and inexpensive method in a variety of fields such as the recovery of various metal ions, [8 -14] removal of acetic acid, [15] removal of phenolic compounds and lactic acid [16,17] and recovery of pharmaceutical substances. [18] In this method, the diffusion of the metal ions is facilitated by the presence of an oil-soluble carrier.…”

Section: Introductionmentioning

confidence: 99%

Removal of copper and zinc from aqueous solutions and industrial effluents using emulsion liquid membrane technique

Venkatesan

Begum

2008

Asia-Pacific J Chem Eng

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Copper and zinc were removed from dilute aqueous solutions together with recovery of copper from electroplating wastewater containing copper ions by emulsion liquid membrane (ELM) technique. The effects of surfactant concentration, carrier concentration, emulsification speed, emulsification time, internal phase stripping agent concentration, and aqueous-to-organic phase (A/O) volume ratio on the emulsion stability and breakup have been studied in detail and reported. A mixture of kerosene as diluent, span 80 as surfactant, di-(2-ethylhexyl) phosphate as carrier was used. An experimental study was performed to optimize the pH of the aqueous external phase based on distribution coefficient of solute between aqueous external phase and organic (membrane) phase. The batch extraction was carried out under various experimental conditions such as agitation time, agitation speed, membrane-to-external phase (M /E ) ratio, solute concentration in the feed phase and carrier concentration in membrane phase on the percentage recovery of zinc and copper ions in their respective feed streams and the operating parameters have been optimized for maximum recovery. It was found that 84% of copper and 86% of zinc were removed from aqueous solution with a concentration factor of 5. It was also found that ELM extraction of copper from wastewater was around 8-17% less than that of the synthetic solution. 

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“…This condition provides the high interfacial area available for membrane-internal interface, thus increasing mass transfer of water molecules from external phase into the internal phase. Besides, an entrainment swelling also occurs, which is caused by the entrainment of the external phase into the internal phase due to the repeated coalescence and re-dispersion of emulsion globules during the dispersion operation, hence, causing an increase of the internal phase volume [29]. Thus, a mild agitation of 150 rpm has been chosen for the next experiment.…”

Section: Experimental Designmentioning

confidence: 99%

Recovery of ionized nanosilver by emulsion liquid membrane process and parameters optimization using response surface methodology

Sulaiman

Othman

Amin

2016

Desalination and Water Treatment

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A B S T R A C TThe discharge of silver ions from nanosilver-based product into the environment has raised the ecological and human health concern due to the toxicity of silver ion, particularly on the release behaviour of ionized nanosilver from the wastage. Therefore, recovery of ionized nanosilver is highly necessary. In this research, emulsion liquid membrane technique was employed for ionized nanosilver recovery from the domestic waste. The liquid membrane consists of kerosene, Span 80, Cyanex 302 and acidic thiourea as the diluent, surfactant, carrier and stripping agent, respectively. The emulsion stability was investigated at different surfactant concentrations, agitation and homogenizer speeds. Response surface methodology (RSM) was applied for the optimization of process variables including treat ratio, sulphuric acid (H 2 SO 4 ) and thiourea concentration in the recovery process. The results showed that the most stable emulsion was observed at 3% w/v of surfactant, 10,000 and 150 rpm of homogenizer and agitation speed, respectively. The optimum conditions obtained for the recovery process using RSM were: treat ratio (0.256), H 2 SO 4 concentration (0.75 M) and thiourea concentration (0.85 M). At the optimized condition, the maximum recovery of ionized nanosilver was 84.74%.

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Modeling of the permeation swelling of emulsion during lactic acid extraction by liquid surfactant membranes

Cited by 20 publications

References 15 publications

Extraction of alcohol using emulsion liquid membrane consisting of paraffin oil as an organic phase and lecithin as a surfactant

Extraction of alcohol using emulsion liquid membrane consisting of paraffin oil as an organic phase and lecithin as a surfactant

Removal of copper and zinc from aqueous solutions and industrial effluents using emulsion liquid membrane technique

Recovery of ionized nanosilver by emulsion liquid membrane process and parameters optimization using response surface methodology

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