Recovery of ionized nanosilver by emulsion liquid membrane process and parameters optimization using response surface methodology by Raja Sulaiman, Raja Norimie, Othman, Norasikin, Saidina Amin, Nor Aishah

“…The liquid membrane consists of kerosene, Span 80, Cyanex 302 and acidic thiourea as the diluent, surfactant, carrier and stripping agent, respectively. …”

Optimization of synergistic green emulsion liquid membrane stability for enhancement of silver recovery from aqueous solution by Jusoh, Norela, Othman, Norasikin, Raja Sulaiman, Raja Norimie, Mohamed Noah, Norul Fatiha, Ahmad Zaini, Muhammad Abbas

“…The emulsion liquid membrane (ELM) process for silver recovery containing synergistic Cyanex 302/Cyanex 272 carriers, palm oil as a diluent, acidic thiourea as a stripping agent, and sorbitan monooleate (Span 80) as a surfactant was attempted. …”

Intensification reactive recovery of tetravalent platinum from spent catalyst via synergism of TBP/Cyanex 302 system by Raja Sulaiman, Raja Norimie, Othman, Norasikin, Jusoh, Norela, Mohamed Noah, Norul Fatiha, Rashid, Roslina, Saufi, Syed Mohd.

“…Meanwhile, almost 98% of platinum (IV) was successfully recovered using 3.0 M thiourea in 3.0 M hydrochloric acid (HCl) in two stages of stripping process.…”

Emulsion liquid membrane stability in the extraction of ionized nanosilver from wash water by Raja Sulaiman, Raja Norimie, Othman, Norasikin, Saidina Amin, Nor Aishah

“…The membrane phase containing Cyanex 302, Span 80, acidic Thiourea, and kerosene as carrier, surfactant, stripping agent, and diluent respectively. …”

Separation of silver from photographic wastes by emulsion liquid membrane system by Othman, Norasikin, Mat, Hanapi, Goto, Masahiro

“…The highest silver extraction is obtained by using 0.05 M Cyanex 302, 3% (w/v) Span 80, 4.166 Hz (250 rpm) stirring speed, 1.0 M thiourea in 1.0 M H2SO4 stripping agent, 1:5 of treat ratio, and kerosene as a diluent.…”

Liquid-liquid extraction of black B dye from liquid waste solution using tridodecylamine by Othman, Norasikin, Mili, Norlisa, Wong, Y. M.

“…The result found that almost 100% of dye was stripped using 0.5 M Thiourea in 1 M sodium hydroxide solution. As a conclusion, Black B dye recovered successfully using TDA in kerosene at favourable condition.…”

Liquid-liquid extraction of palladium from simulated liquid waste using phosphinic acid as a carrier by Othman, Norasikin, Mohamed Noah, Norul Fatiha, Raja Sulaiman, Raja Norimie, Abdullah, Nurul Ashida, Bachok, Siti Khadijah

“…The results showed that at the favourable condition of 0.1 mM Cyanex 302 in kerosene as a diluent, and 2.0 M of thiourea in 1.0 M sulphuric acid as a stripping agent, almost 100% of palladium was extracted from the liquid waste solution and 90% was recovered in the receiving phase…”
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Emulsion liquid membrane extraction of turquoise blue reactive dye – study on membrane breakage and swelling by Othman, Norasikin, Zailani, Siti Nazrah, Mili, Norlisa

“…The result obtained shows that, more than 70% of Turquoise Blue was extracted at favourable condition of 0.07 M TDA, 7% (w/v) SPAN 80 and 0.5 M Thiourea in 1 M NaOH.…”

Removal of red 3BS Dye from wastewater using emulsion liquid membrane process by Othman, Norasikin, Djamal, R., Mili, N., Zailani, S. N.

“…The highest Red 3BS dye extraction was obtained by using 0.07 M Tridodecylamine, 5% (w/v) Span 80, 250 rpm agitation speed, 0.5 M thiourea in 1.0 M sodium hydroxide as the stripping agent, 1:3 treat ratio and kerosene as the diluent. …”
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Parameter study of ionized nanosilver recovery from wash water using emulsion liquid membrane process by Raja Sulaiman, Raja Norimie, Othman, Norasikin, Saidina Amin, Nor Aishah, Mohamed Noah, Norul Fatiha

“…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. …”
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Emulsion liquid membrane extraction of silver from photographic waste using CYANEX 302 as the mobile carrier by Othman, Norasikin, Chan, K.H., Goto, Masahiro, Mat, Hanapi

“…The highest silver extraction was obtained by using 0.05 M Cyanex 302, 3% (w/v) Span 80, 250 rpm stirring speed, 1.0 M thiourea in 1.0 M H2SO4 as stripping agent, 1:5 of treat ratio, and kerosene as the diluent.…”

Stability of primary emulsion assisted with nanoparticle in emulsion liquid membrane process for zinc extraction by Suliman, Sazmin Sufi, Othman, Norasikin, Mohamed Noah, Norul Fatiha, Johari, Khairiraihanna, Ali, Nora’aini

“…The components used in ELM were di-(2-ethylhexyl)phosphoric acid (D2EHPA) and bis(2,4,4-trimethylpentyl)thiophosphinic acid (Cyanex 302) as a base and synergistic carrier, palm oil as a diluent, sorbitan monooleate (Span 80) and polyoxyethylene sorbitan monooleate (Tween 80) as a surfactant, iron (III) oxide (Fe2O3) as a nanoparticle stabilizer and acidic thiourea as a stripping agent. There are several operating parameters including hydrophilic-lipophilic (HLB) value, mixed surfactant concentration, homogenizer speed as well as nanoparticle concentration were investigated in primary W/O emulsion preparation. …”

Potential use of synergist D2EHPA/Cyanex 302 in kerosene system for reactive extraction: Zinc recovery and organic phase regeneration by Mohamed Noah, Norul Fatiha, Othman, Norasikin, Kahar, Izzat Naim Shamsul, Suliman, Sazmin Sufi

“…Meanwhile, the back-extraction revealed that 0.45 M acidic thiourea is the most effective stripping agent, which achieved almost 100% stripping efficiency. …”
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Emulsion liquid membrane extraction of silver from photographic waste using cyanex 302 as a mobile carrier by Othman, Norasikin, Chan, Kit Hie, Goto, Masahiro, Mat, Hanapi

“…The highest silver extraction was obtained by using 0.05 M Cyanex 302, 3 % (w/v) Span 80, 250 rpm stirring-speed, 1.0 M thiourea in 1.0 M H2SO4 as stipping agent, 1:5 of treat ratio, and kerosene as a diluent.…”
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Extraction and enrichment of zinc from chloride media using emulsion liquid membrane: Emulsion stability and demulsification via heating-ultrasonic method. by Suliman, Sazmin Sufi, Othman, Norasikin, Mohamed Noah, Norul Fatiha, Shamsul Kahar, Izzat Naim

“…At the best condition of 3% (w/v) 1-octanol, 0.03 M carrier concentration (D2EHPA/Cyanex 302), and 1.375 M acidic thiourea, approximately 93.14% zinc was extracted, and 4.65 times enrichment was obtained in the recovery phase. …”

Selective emulsion liquid membrane extraction of silver from photographic waste industries by Mat, Hanapi, Othman, Norasikin, Ali, Noorhalieza

“…The optimum silver extraction was obtained by using 0.03 M Cyanex 302, 3 % (w/v) Span 80, 250 rpm stirring speed, 1.0 M thiourea in 1.0 M H2SO4 stripping agent, 1:5 of treat ratio, and kerosene as a diluents. …”
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