Stability and performance studies of emulsion liquid membrane on pesticides removal using mixture of Fe3O4Â nanoparticles and span80

Mohammed, Abbas; Jaber, Noor Q.

doi:10.1016/j.envadv.2022.100294

Cited by 13 publications

(17 citation statements)

References 33 publications

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“…The CP concentration in the separated phase solution was measured by the ultraviolet spectrophotometer having 290nm UV wavelength. Subsequently, the percentage of CP extraction was calculated using [20]:…”

Section: A Extraction Process Of Cpmentioning

confidence: 99%

“…The resulting emulsion was allowed to be naturally separated from the feed solution by gravity, then a demulsification process was achieved by applying centrifugal force on the emulsion. The CP concentration extracted from the internal aqueous solution was measured, and the stripping efficiency was then estimated according to [20]:…”

Section: B Strippingmentioning

confidence: 99%

“…leaking H + ions) results from the emulsion breaking (rupture) because of the excretion of the HCl from the internal to the external aqueous phase. The emulsion rupture or breakage (ε) signifies the internal aqueous phase volume leaked to the external feed aqueous phase ratio using [20]:…”

Section: Membrane Leakage/breakagementioning

confidence: 99%

“…equalizing membrane phase with internal phase volume, caused a decrease in breakage from 2.44% to 0.82% and increased the extraction and stripping efficiencies of CP to a maximum of 90.3% and 86.2%, respectively. This could be because at a lower volume ratio (1:3), an abundance of oil phase volume led to the creation of a thicker interface and more viscous emulsion that hindered internal phase diffusion into the membrane [20]. Additionally, at low volume ratios, the lowering in extraction efficiency due to a smaller amount of the internal phase (stripping agent) extracted the solute from the organic membrane phase.…”

Section: A Effect Of Internal To Membrane Phase Volume Ratiomentioning

confidence: 99%

“…The results show that a decrease in the treatment ratio to 250/50 improved extraction efficiency and decreased breakage from 84.3% and 2.1% to 92.1% and 0.8%, respectively. With decreasing the ratio, the swelling phenomena develop and become fast, and also an occurrence of substantial internal droplets coalescence that will eventually grow in size [20]. This could be explained that due to the volume increase of emulsion, more quantity would be available to add to the progress of CP transport.…”

Section: B Effect Of External To Emulsion Volume Ratiomentioning

confidence: 99%

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Performance Evaluation of Emulsion Liquid Membrane on Chlorpyrifos Pesticide Removal: Stability, Mass Transfer Coefficient, and Extraction Efficiency Studies

Al-Damluji

Mohammed²

2023

Eng. Technol. Appl. Sci. Res.

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Emulsion Liquid Membrane (ELM) is an emerging technology that removes contaminants from water and industrial wastewater. This study investigated the stability and extraction efficiency of ELM for the removal of Chlorpyrifos Pesticide (CP) from wastewater. The stability was studied in terms of emulsion breakage. The proposed ELM included n-hexane as a diluent, span-80 as a surfactant, and hydrochloric acid (HCl) as a stripping agent. Parameters such as mixing speed, aqueous feed solution pH, internal-to-organic membrane volume ratio, and external-to-emulsion volume ratio were investigated. A minimum emulsion breakage of 0.66% coupled with a maximum chlorpyrifos extraction and stripping efficiency were achieved at 96.1% and 95.7% at best-operating conditions of 250/50 external-to-emulsion volume ratio, external feed solution pH 6, 250rpm mixing speed, and 1:1 internal-to-membrane volume ratio at 10min contact time without utilizing a carrier agent. A study of extraction kinetics and estimation of mass transfer coefficient was also conducted (3.89×10-9m/s). The results of this work can be extended to the removal of other types of pesticides from wastewater.

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Section: A Extraction Process Of Cpmentioning

confidence: 99%

Section: B Strippingmentioning

confidence: 99%

Section: Membrane Leakage/breakagementioning

confidence: 99%

Section: A Effect Of Internal To Membrane Phase Volume Ratiomentioning

confidence: 99%

Section: B Effect Of External To Emulsion Volume Ratiomentioning

confidence: 99%

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Performance Evaluation of Emulsion Liquid Membrane on Chlorpyrifos Pesticide Removal: Stability, Mass Transfer Coefficient, and Extraction Efficiency Studies

Al-Damluji

Mohammed²

2023

Eng. Technol. Appl. Sci. Res.

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Removal of High Concentrations of Arsenite from Aqueous Solutions by the Emulsion Liquid Membrane Technique

Ghasemi,

Abdi,

Nasiri

2024

ChemistrySelect

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As(III) is a dangerous species that contaminates groundwater resources and therefore water purification from this element is necessary. In this study, the removal of As(III) was investigated by the emulsion liquid membrane (ELM) technique due to the high toxicity levels of this species. The effect of various parameters such as hydrochloric acid and arsenic concentration in the feed solution, emulsion to feed ratio, surfactant concentration and type of carrier was evaluated on the arsenic separation efficiency. The results showed that the best type of carrier in terms of emulsion stability and separation efficiency of arsenic ions was di‐(2‐ethylhexyl) phosphoric acid (D2EHPA), and its optimal concentration was about 5 % (v/v). In addition, paraffin as the organic solvent performed better than the mixture of paraffin and kerosene in the separation of As(III) ions. The optimal conditions were obtained at 8 and 0.1 M HCl concentrations for the feed and the internal phases, respectively. Also, the emulsion to feed ratio of 1 : 4.5, the volume ratio of the internal phase to the membrane phase of 1 : 1 and the surfactant concentration of 5 % (v/v) led to achieving the maximum removal of arsenic ions. This work presents a broad perspective of removing As(III) ions from wastewater by carefully examining the parameters influencing the separation of this hazardous element through the ELM method.

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Extraction of Alpha-cypermethrin Pesticides from Aqueous Solution by Emulsion Liquid Membrane

Jaber

2024

Desalination and Water Treatment

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Stability and performance studies of emulsion liquid membrane on pesticides removal using mixture of Fe3O4Â nanoparticles and span80

Cited by 13 publications

References 33 publications

Performance Evaluation of Emulsion Liquid Membrane on Chlorpyrifos Pesticide Removal: Stability, Mass Transfer Coefficient, and Extraction Efficiency Studies

Performance Evaluation of Emulsion Liquid Membrane on Chlorpyrifos Pesticide Removal: Stability, Mass Transfer Coefficient, and Extraction Efficiency Studies

Removal of High Concentrations of Arsenite from Aqueous Solutions by the Emulsion Liquid Membrane Technique

Extraction of Alpha-cypermethrin Pesticides from Aqueous Solution by Emulsion Liquid Membrane

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