Application of Liquid Emulsion Membrane Technique for the Removal of As(V) from Aqueous Solutions

Binnal, Prakash; Hiremath, Poornima G.

doi:10.1007/s40034-013-0006-9

Cited by 10 publications

(5 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In fact, by increasing the amount of emulsion in the feed solution, the number of globules and the interfacial area per unit volume of the feed solution increase. But the excessive increase in the amount of emulsion leads to an increase in the size of the globules and this increase in size brings the coalescence of droplets and consequently, the breaking of the emulsion [63] …”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

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

Ghasemi,

Abdi,

Nasiri

2024

ChemistrySelect

View full text Add to dashboard Cite

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.

show abstract

Section: Resultsmentioning

confidence: 99%

“…But the excessive increase in the amount of emulsion leads to an increase in the size of the globules and this increase in size brings the coalescence of droplets and consequently, the breaking of the emulsion. [63] 3.6. Effect of the volume ratio of the internal phase to the membrane phase…”

Section: Effect Of the Emulsion To Feed Ratiomentioning

confidence: 99%

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

Ghasemi,

Abdi,

Nasiri

2024

ChemistrySelect

View full text Add to dashboard Cite

show abstract

“…This study by Binnal et al [13] This study was distinguished from the previous two by reviewing the effect of temperature on cadmium extraction by the ELM method. They explained that the extraction reaction of the Cd(II) is favored by a relative decrease in the temperature.…”

Section: Removal Of Heavy Cadmium Ions By Elmmentioning

confidence: 99%

Application of Taguchi Method for Optimization Cadmium Separation by Emulsion Liquid Membrane

Jabbar

Rushdi

2020

QJES

View full text Add to dashboard Cite

A study was carried out to remove cadmium ions from a hydrochloric medium at a concentration of 100 ppm using the emulsified liquid membrane (ELM) technique. Emphasis was placed on assessing process parameters and their effect on changing the concentration of cadmium ions in the hydrochloric solution. To study the performance characteristics of the process, Taguchi method was used with analyzing of signal/noise ratio. Five parameters that affect performance such as (pH of the external phase (1-4), surfactant concentration in the organic layer (4% -10% v / v), carrier concentration in the organic layer (4% -10% v / v), speed of Emulsification (5800-24000) rpm and emulsion volume ratio / outer phase ratio (Eml./Ext ratio) was studied, taking into account the change in the concentration of cadmium ions in the external phase. To obtain the lowest concentration of cadmium ions in the external stage, the values of the optimum parameters were: pH = 3, Surfactant conc. = 4%, Carrier conc. = 8% emulsification speed = 19700 rpm, and Eml./Ext. ratio = 18%. Results of the present work suggested that Eml./Ext. ratio had a major effect on the concentration change, followed by a pH in the outer phase, the emulsification velocity, carrier concentration, and the surfactant concentration respectively.

show abstract

“…Therefore, the solvent extraction method was developed into a liquid membrane-based technology using emulsion liquid membrane (ELM) (Kakoi et al, 1998;Kumbasar & Tutkun, 2006). This development was carried out because ELM resulted in high mass transfer and surface area, simultaneous extraction and stripping in one step, relatively low cost, energy consumption, and the ability to process various compounds relatively quickly (Binnal & Hiremath, 2012).…”

Section: Introductionmentioning

confidence: 99%

The Effect of Surfactants on Separation of Light Rare Earth Metals using Emulsion Liquid Membrane Method: Review

et al. 2022

View full text Add to dashboard Cite

Rare earth metals (REM) are scarce elements and are only found in the form of complex compounds of phosphate and carbonate. REM consists of 17 elements classified into light REM, medium REM, and heavy REM. This article is focused on lightweight REM, which is widely applied in various industrial fields. Many REM applications are increasing the demand for high-purity and bulk REMs. However, REM has almost the same physical and chemical properties, making it difficult to separate. Therefore, the separation of REM is interesting to study with various methods, one of which is Emulsion Liquid Membrane (ELM). ELM is developing a solvent extraction method involving three phases: the external phase, the internal phase, and the membrane phase. The key to the success of ELM lies in the stability of the emulsion, which is very dependent on the type and concentration of surfactants, so in the ELM process, it is necessary to choose the right concentration and type of surfactant. Therefore, this article was made to know the effect of surfactants such as span-80, span-85, and T154 in separating light REM using the ELM method.

show abstract

Application of Liquid Emulsion Membrane Technique for the Removal of As(V) from Aqueous Solutions

Cited by 10 publications

References 34 publications

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

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

Application of Taguchi Method for Optimization Cadmium Separation by Emulsion Liquid Membrane

The Effect of Surfactants on Separation of Light Rare Earth Metals using Emulsion Liquid Membrane Method: Review

Contact Info

Product

Resources

About