Pertraction of dysprosium from nitrate medium by emulsion liquid membrane containing mixed surfactant system

Raji, Maliheh; Abolghasemi, Hossein; Safdari, Jaber; Kargari, Ali

doi:10.1016/j.cep.2017.06.010

Cited by 29 publications

(16 citation statements)

References 68 publications

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“…In other words, the volume ratio of stripping aqueous solution to organic solution was 1:1 or the volume ratio of stripping solution to emulsion was 0.5. This value is the most convenient for ELM processes at laboratory scale according to the literature [38,[43][44][45].…”

Section: Methodsmentioning

confidence: 99%

“…All was stirred by an overhead stirrer for an extraction time of 10 min. The initial concentration of dye and the ratio of feed solution to membrane were constant at the optimized values obtained in our recent paper on Dy extraction through ELM [38]. The stirring speed during extraction was one of the studied parameters and was varied as per the experiment plan to examine its effect on extraction in the ELM process.…”

Section: Methodsmentioning

confidence: 99%

“…In the numerical optimization used, desirability is an objective function that ranges from 0 outside of the limits to 1 at the goal [38]. In this case, the obtained value of desirability (0.988) shows that the estimated function can be employed to predict the desired conditions for extraction efficiency of Dy by ELM integrated with MWCNTs.…”

Section: Optimization Of the Variablesmentioning

confidence: 99%

“…The number of factors was limited in order to reduce the number of experimental runs. The other important variables were kept constant at the optimized values obtained in our recent paper on Dy extraction through ELM process with the same experimental setup [38].…”

Section: Introductionmentioning

confidence: 99%

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Response Surface Optimization of Dysprosium Extraction Using an Emulsion Liquid Membrane Integrated with Multi‐Walled Carbon Nanotubes

et al. 2018

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A new emulsion liquid membrane was prepared for dysprosium (Dy) extraction from aqueous solution using multi-walled carbon nanotubes (MWCNTs). The influence of MWCNT concentration, carrier and surfactant concentration, stirring speed, feed-phase pH, and internal phase concentration and their interactive effects were studied. A regression model for Dy extraction was developed and the parameters were optimized by response surface methodology. The extent of extraction increases with higher MWCNT concentration up to a certain level. The Dy extraction through the liquid membrane containing MWCNT improves with time. Moreover, the overall mass transfer coefficient was enhanced in the presence of MWCNT due to the formation of a more stable emulsion and liquid membrane.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Optimization Of the Variablesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Response Surface Optimization of Dysprosium Extraction Using an Emulsion Liquid Membrane Integrated with Multi‐Walled Carbon Nanotubes

et al. 2018

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“…At higher concentrations of NaCl (> 7 mM), the AMX removal efficiency declines due to an increase in the viscosity of the emulsion which leads to a reduction in AMX permeability. Another possible reason is that by increasing the internal concentration the ionic strength rises between the internal and external phases, which leads to swelling and then membrane breakage , .…”

Section: Resultsmentioning

confidence: 99%

Amoxicillin Extraction from Aqueous Solution by Emulsion Liquid Membranes Using Response Surface Methodology

Seifollahi

Rahbar-Kelishami

2018

Chem Eng & Technol

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The extraction of amoxicillin (AMX) from aqueous solutions by emulsion liquid membranes (ELMs) was investigated for the first time. The liquid membrane phase of the ELM consisted of Aliquat 336 as carrier, Span 80 as surfactant, n‐hexane as diluent, and sodium chloride solution as internal phase. Response surface methodology (RSM) based on central composite design (CCD) was applied to evaluate and optimize the effects of several parameters such as carrier concentration, feed concentration, internal phase concentration, and treat ratio (volume ratio of the external phase to the emulsion phase). A polynomial model was fitted to predict the extraction yield of AMX. Under optimized conditions, the highest extraction yield of AMX was 99.8 %.

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Liquid Membrane Technology for Sustainable Separations

López‐Porfiri

González‐Miquel

Gorgojo

2022

Sustainable Separation Engineering

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Pertraction of dysprosium from nitrate medium by emulsion liquid membrane containing mixed surfactant system

Cited by 29 publications

References 68 publications

Response Surface Optimization of Dysprosium Extraction Using an Emulsion Liquid Membrane Integrated with Multi‐Walled Carbon Nanotubes

Response Surface Optimization of Dysprosium Extraction Using an Emulsion Liquid Membrane Integrated with Multi‐Walled Carbon Nanotubes

Amoxicillin Extraction from Aqueous Solution by Emulsion Liquid Membranes Using Response Surface Methodology

Liquid Membrane Technology for Sustainable Separations

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