A comparative study of experimental optimization and response surface methodology of Bi(III) extraction by emulsion organophosphorus liquid membrane

Benyahia, Nacera; Belkhouche, Nasr‐Eddine; Jönsson, Jan Åke

doi:10.1016/j.jece.2014.07.003

Cited by 30 publications

(9 citation statements)

References 43 publications

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“…The extraction percentage is accelerated by increasing feed-phase pH due to the higher difference in the proton concentration between feed and internal phases serving as the driving force for extraction. Similar results in metal extraction using acidic extractants such as Cyanex 272 and D2EHPA have been reported earlier [10,40,55]. Based on this surface plot, the increment in carrier concentration above 1 M leads to reduction in the influence of feed-phase pH.…”

Section: Research Articlesupporting

confidence: 83%

“…4-6 imply that when the carrier concentration rises above a certain limit (~1 M), the extraction percentage cannot be improved. This finding may be attributed to an increase in the viscosity of the membrane phase which reduces the diffusion rate of Dy and its complexes through the membrane phase and reduces the mass transfer area as a result of formation of larger emulsion globules [40].…”

Section: Research Articlementioning

confidence: 99%

“…Central composite design (CCD), known as a standard RSM design, is a collection of mathematical and statistical techniques useful in situations where the response of interest is influenced by several factors and their interactions. This methodology allows the simultaneous optimization of the levels of process variables to obtain the targeted response [39][40][41]. This method is more economical and time-saving compared with the traditional approach.…”

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: Research Articlesupporting

confidence: 83%

Section: Research Articlementioning

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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“…In model, the p-value for lack-of-fit is 0.3495, which is greater than 0.0010, indicating that the lack-of-fit is not significant relative to the pure error. However, a model with reasonable R 2 value is acceptable with significant lack-of-fit [22][23][24]. Table 5 gives information regarding data for Coefficient of determination (R2),( ANOVA test result).…”

Section: Resultsmentioning

confidence: 99%

Optimization and Statistical Analysis of Binary Composite Y2O3/SiO2 Prepared by Wet Chemical Route

Kumari¹

2018

IJRASET

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Nanopowder binary oxides consisting of Yttrium oxide (Y2O3) and silicon dioxide (SiO2) was prepared by the chemical co precipitation method. The effect of process variables lattice strain of Y2O3:SiO2 was studied using Cental Composite design. The results revealed that the significant factors affecting lattice strain were concentrations and the rate/speed of addition/mixing of precoursors, value and duration of annealing temperature. The optimal calculated parameters were found to be annealing temperature -300 0 C, drop rate-20d/min, concentration of precursors1-1 (w/v), concentration of precursors2-40 mmol/l, lattice strain Ԑ≈.000121 . The formation of Y2O3:SiO2 was confirmed by Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD) studies. The strain values are calculated from W-H plot for annealed samples.

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“…ELM consists of three immiscible phases: external phase (feed solution), membrane, and internal phase (stripping solution). ELM is usually optimized through adjusting various variables such as external phase pH, carrier concentration, surfactant concentration, internal phase concentration, feed concentration, agitation speed, treat ratio, ratio of internal phase volume to membrane, and contact time .…”

Section: Introductionmentioning

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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A comparative study of experimental optimization and response surface methodology of Bi(III) extraction by emulsion organophosphorus liquid membrane

Cited by 30 publications

References 43 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

Optimization and Statistical Analysis of Binary Composite Y2O3/SiO2 Prepared by Wet Chemical Route

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

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