Palladium Extraction Using Emulsion Liquid Membrane Process – Stability Study

2015 ◽  
Vol 1113 ◽  
pp. 376-381 ◽  
Author(s):  
Norul Fatiha Mohamed Noah ◽  
N. Othman ◽  
Siti Khadijah Bachok ◽  
Nurul Ashida Abdullah
Keyword(s):  
Liquid Membrane ◽  
Economic Value ◽  
Industrial Applications ◽  
Stability Study ◽  
Agitation Speed ◽  
Promising Technique ◽  
Emulsion Liquid Membrane ◽  
Cyanex 302 ◽  
Batch System ◽  
Simulated Wastewater

Palladium is a rare precious metal with unique physical properties that are used in diverse industrial applications and in jewellery. Due to its economic value and its limited natural resources, palladium recovery from secondary resources has assumed a great significance. Therefore, this study investigated the possibility of using Emulsion Liquid Membrane (ELM) process for the extraction of palladium from simulated wastewater. The experiment was conducted using a mixer-settler in a batch system using 0.1 M Cyanex 302 in kerosene as a new carrier for palladium and 1.0 M Thiourea in 1.0 M H2SO4as a stripping agent. The effect towards membrane stability of different parameter such as surfactant concentration, emulsifying time and agitation speed has been attempted. The results show that at favourable condition of 2% w/v of span 80, 3 minutes emulsifying time, and 200 rpm agitation speed, 94% of palladium was extracted. Hence, ELM is proven to be a very promising technique for the extraction of palladium from wastewater.

scholarly journals Application of Emulsion Liquid Membrane Process for Cationic Dye Extraction

2020 ◽  
Vol 21 (3) ◽  
pp. 39-44
Author(s):  
Manal Adnan Mohammed ◽  
Wasan Omar Noori ◽  
Huda Adil Sabbar
Keyword(s):  
Methylene Blue ◽  
Liquid Membrane ◽  
Agitation Speed ◽  
Blue Dye ◽  
Cationic Dye ◽  
Methylene Blue Dye ◽  
Membrane Process ◽  
Emulsion Liquid Membrane ◽  
H2so4 Concentration ◽  
Dye Extraction

In the present work studies were carried out to extract a cationic dye (Methylene Blue MB) from an aqueous solution using emulsion liquid membrane process (ELM). The organic phase (membrane phase) consists of Span 80 as emulsifier, sulfuric acid solution as stripping agent and hexane as diluent.  In this study, important factors influencing the extraction of methylene blue dye were studied. These factors include H2SO4 concentration in the stripping phase, agitation speed in the dye permeation stage, Initial dye concentration and diluent type.    More than (98%) of Methylene blue dye was extracted at the following conditions: H2SO4 concentration (1.25) M, agitation speed (200) rpm, dye concentration (10) ppm and the diluent type was hexane.

Extraction of Ionized Nanosilver by Emulsion Liquid Membrane Using Cyanex 302 as a Mobile Carrier

2014 ◽  
pp. 463-469
Author(s):  
Raja Norimie Raja Sulaiman ◽  
Norasikin Othman ◽  
Nor Aishah Saidina Amin ◽  
Noor Haziqah Kamaludin ◽  
Nur Na Illah Sallih Udin
Keyword(s):  
Liquid Membrane ◽  
Emulsion Liquid Membrane ◽  
Cyanex 302 ◽  
Mobile Carrier

scholarly journals Formation and Stability Study of Nano-Emulsions: BTX- Separation

2009 ◽  
Vol 3 (1) ◽  
pp. 33-40 ◽  
Author(s):  
Jaydeep M. Barad ◽  
Mousumi Chakraborty ◽  
Hans-Jörg Bart
Keyword(s):  
Liquid Membrane ◽  
Stability Study ◽  
Liquid Membranes ◽  
Feed Mixture ◽  
Emulsion Liquid Membrane ◽  
Benzene Toluene ◽  
The Stability ◽  
Separation Performances ◽  
Membrane Mechanism ◽  
Stability Of Emulsion

The selective separation of aromatics (benzene, toluene and p-xylene, BTX) from aliphatic (n-heptane) is investigated using simple permeation and facilitated transport emulsion liquid membrane mechanism. The separation performances, represented by the permeation rate and separation factor, are analyzed systematically by varying the operating parameters. One of the major obstacles to the application of emulsion liquid membranes to industrial separations is the stability of emulsion globules. In the present study, stability of emulsion liquid membrane is studied by varying different parameters e.g. surfactant and feed phase concentration, stirrer speed for emulsification. Dispersion destabilisation of emulsion is detected by Turbiscan. Effects of interfacial tension on internal droplets size and size distribution are also systematically investigated. Stable emulsions under optimal conditions are used for the separation of aromatics (BTX) from aliphatic (n-heptane) in a synthetic feed mixture.

scholarly journals Recovery of Ionized Nanosilver from Wash Water Solution using Emulsion Liquid Membrane Process

2013 ◽  
Vol 65 (4) ◽  
Author(s):  
Raja Norimie Raja Sulaiman ◽  
Norasikin Othman ◽  
Nor Aishah Saidina Amin
Keyword(s):  
Liquid Membrane ◽  
Water Solution ◽  
Absorption Spectrometry ◽  
Wash Water ◽  
Extraction Time ◽  
Ionic Form ◽  
Emulsion Liquid Membrane ◽  
Sorbitan Monooleate ◽  
Cyanex 302 ◽  
Internal Phase

The increasing numbers of product containing nanosilver have raised a great concern about their possible impact in the environment especially in the ionic form which leads to the toxicity problem when the association occurs with the organism cells. Therefore, the main focus of this study was to investigate several parameters influencing the recovery of ionized nanosilver from wash water using emulsion liquid membrane (ELM) process. This process involves three phases dispersion system including external, membrane and internal phase. The membrane phase was prepared by dissolving bis [2, 4, 4-trimethylpentyl] monothiophosphinic acid (Cyanex 302) as a carrier and Sorbitan Monooleate (Span 80) as a surfactant in kerosene as a diluent. Thiourea in Sulfuric acid (H2SO4) was used as a stripping agent in the internal phase. The important parameters such as extraction time, carrier and stripping agent concentrations were investigated. All experiments were conducted in batch system. The concentration of the ionized nanosilver was measured using Atomic Absorption Spectrometry (AAS). The result demonstrated that almost 100% of silver ion was extracted with 91% have been recovered within 5 minute of extraction time using 0.005 M Cyanex 302 and 1.0 M Thiourea in 1.5 M H2SO4. Hence, ELM was proven to be a very promising technique for the simultaneous extraction and recovery of ionized nanosilver from wash water.

scholarly journals Stability Study of Emulsion Liquid Membrane via Emulsion Size and Membrane Breakage on Acetaminophen Removal from Aqueous Solution Using TOA

ACS Omega ◽  
2020 ◽  
Vol 5 (37) ◽  
pp. 23892-23897
Author(s):  
Nur Dina Zaulkiflee ◽  
Abdul Latif Ahmad ◽  
Jayasree Sugumaran ◽  
Nuur Fahanis Che Lah
Keyword(s):  
Aqueous Solution ◽  
Liquid Membrane ◽  
Stability Study ◽  
Emulsion Liquid Membrane

Parameter Study of Ionized Nanosilver Recovery from Wash Water using Emulsion Liquid Membrane Process

2014 ◽  
Vol 67 (4) ◽  
Author(s):  
Raja Norimie Raja Sulaiman ◽  
Norasikin Othman ◽  
Nor Aishah Saidina Amin ◽  
Norul Fatiha Mohamed Noah
Keyword(s):  
Liquid Membrane ◽  
Absorption Spectrometry ◽  
Aquatic Organism ◽  
Agitation Speed ◽  
Wash Water ◽  
Organic Chemical ◽  
Parameter Study ◽  
Emulsion Liquid Membrane ◽  
Internal Phase ◽  
External Phase

Ionized nanosilver is a harmful and highly toxic owing to its association with other organic chemical especially with the aquatic organism cells. Therefore, it is crucial to treat the ionized nanosilver to preserve the environment. In this study, experiments were carried out using emulsion liquid membrane (ELM) process in order to investigate the performance of extraction and recovery of ionized nanosilver from wash water. This process involves three phase dispersion systems including external phase, membrane phase and internal phase. The ELM formulation consists of bis [2,4,4-trimethylpentyl] monothiophosphinic acid (Cyanex 302) as a carrier, Span 80 as a surfactant, kerosene as a diluent and thiourea in sulphuric acid (H2SO4) solution as stripping agent. This study has highlighted several effects of parameters including agitation speed, pH of external phase, and treat ratio. The concentration of the ionized nanosilver was measured using Atomic Absorption Spectrometry (AAS). The results have demonstrated that at optimum conditions, the percentages of extraction, stripping and recovery were 96, 84 and 80% respectively at 150 rpm of agitation speed, pH 2 and 0.33 of treat ratio.

scholarly journals Emulsion breakage behaviour on chromium (VI) removal using emulsion liquid membrane containing quaternary ammonium compounds

2018 ◽  
Vol 14 (2) ◽  
pp. 298-302
Author(s):  
Norul Fatiha Mohamed Noah ◽  
Norasikin Othman ◽  
Norlela Jusoh
Keyword(s):  
Removal Efficiency ◽  
Contact Time ◽  
Liquid Membrane ◽  
Agitation Speed ◽  
Phase Contact ◽  
Emulsion Liquid Membrane ◽  
Tannery Effluents ◽  
Phase Contact Time ◽  
Alamine 336 ◽  
Maximum Removal

Environmental pollution caused by heavy metals such as chromium, nickel, and lead has become a serious worldwide issue due to their threats to humans, animals and plants as well as to the stability of the overall ecosystem. Its removal from effluents such as electroplating rinse wastewater and tannery effluents is of primordial importance. In this study, the emulsion liquid membrane (ELM) technology was employed as a remediation technique that capable of removing Cr (VI) efficiently from wastewater where extraction and stripping processes are performed in a single operation. The ELM is consists of trioctylmethylammonium chloride (Alamine 336) as an extractant, palm oil as an organic diluent, sodium hydroxide (NaOH) as a stripping solution and sorbitan monooleate (Span-80) as a surfactant to stabilize the emulsion phase. The effect of operational parameters such as the agitation speed, phase contact time, extractant concentration and stripping agent concentration were studied to optimize the conditions for emulsion stability and maximum removal of chromium. The best removal efficiency was obtained at 350 rpm of agitation speed and 3 minutes of phase contact time with 0.04 M Alamine 336 as extractant and 0.1 M NaOH as stripping agent. In this condition, the maximum removal efficiency of 100% was obtained with a minimum breakage rate of 5%.

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