Parallel artificial liquid membrane extraction: micro-scale liquid–liquid–liquid extraction in the 96-well format

Bioanalysis ◽  
2013 ◽  
Vol 5 (11) ◽  
pp. 1377-1385 ◽  
Author(s):  
Astrid Gjelstad ◽  
Knut Einar Rasmussen ◽  
Marthe Petrine Parmer ◽  
Stig Pedersen-Bjergaard
Keyword(s):  
Liquid Membrane ◽  
Liquid Extraction ◽  
Membrane Extraction ◽  
Micro Scale ◽  
Liquid Liquid Extraction ◽  
Liquid Membrane Extraction

scholarly journals Liquid-liquid extraction and facilitated membrane transport of Pb2+ using a lipophilic acridono-crown ether as carrier

2020 ◽  
Vol 99 (1-2) ◽  
pp. 117-129
Author(s):  
Ádám Golcs ◽  
László Bezúr ◽  
Péter Huszthy ◽  
Tünde Tóth
Keyword(s):  
Membrane Transport ◽  
Metal Ion ◽  
Liquid Membrane ◽  
Competitive Inhibition ◽  
Liquid Extraction ◽  
Bulk Liquid ◽  
Bulk Liquid Membrane ◽  
Liquid Liquid Extraction ◽  
Component Systems ◽  
Source Phase

AbstractStudies on liquid-liquid extraction and bulk liquid membrane (BLM) technique-based metal ion separation by a previously published Pb2+-selective acridono-18-crown-6 ether selector molecule were performed. The effects of the stirring speed, the quality of apolar organic membrane, the counterions of Pb2+, the pH of the aqueous phase, the concentration of the source phase, the concentration of the carrier in the BLM and the temperature on the Pb2+-separation were investigated. Moreover, the effects of the competitive inhibition due to the presence of Ag+, Ca2+, Co2+, Cu2+, K+, Mg2+, Na+ and Zn2+ as competing ions in a multicomponent aqueous source phase of different ion-concentrations were also studied. After a proper dilution of the multicomponent aqueous source phase, excellent Pb2+-selectivity was achieved without a significant reduction in the efficiency compared to the liquid membrane transport of single-component systems. Based on the BLM-cell studies the applied selector molecule proved to be suitable for the development of liquid membrane-based Pb2+-selective separation methods, which can be greatly aided by the analysis of the effects on the separation and by the optimization of the parameters of the process discussed here.

scholarly journals Emulsion Liquid Membrane Extraction of Turquoise Blue Reactive Dye–Study on Membrane Breakage and Swelling

2017 ◽  
Vol 11 (1) ◽  
Author(s):  
N. Othman ◽  
S. N. Zailani ◽  
N. Mili
Keyword(s):  
Liquid Membrane ◽  
Raw Materials ◽  
Extraction Process ◽  
Reactive Dye ◽  
Point Of View ◽  
Membrane Extraction ◽  
Hydrodynamic Condition ◽  
Emulsion Liquid Membrane ◽  
Liquid Membrane Extraction ◽  
Span 80

Reactive dyes are the principal dyes used in batik industry in Malaysia. From the environmental point of view the dyes should be removed from wastewater because they are toxic in nature. Therefore, the removal and recovery of dyes from batik industry wastewater is absolute necessity in order to save raw materials and to protect environment from hazardous compounds. An experiment was carried out using emulsion liquid membrane (ELM) process in batch system to study the extraction behaviour of Turquoise Blue which is commonly used in batik industry. Several parameters have been studied such as carrier and surfactant/emulsifier concentrations, stripping agent and extraction time. The liquid membrane was formulated using kerosene as diluent, SPAN 80 as emulsifier and tri-dodecylamine (TDA) as a carrier. Hydrodynamic condition to generate extraction process was at 1:3 treat ratio and 250 rpm stirring speed for 10 minutes while the emulsification was done at 12000 rpm for 5 minutes using homogenizer. 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.

scholarly journals Emulsion Liquid Membrane Extraction of Silver from Photographic Waste using Tetramethylthiuram Disulfide (TMTDS) as a Mobile Carrier

2017 ◽  
Vol 3 (1) ◽  
Author(s):  
Norasikin Othman ◽  
Chan Kit Hie ◽  
Chiong Tung ◽  
Hanapi Mat ◽  
Masahiro Goto
Keyword(s):  
Heavy Metals ◽  
Liquid Membrane ◽  
Raw Materials ◽  
Precious Metals ◽  
Membrane Extraction ◽  
Industrial Wastes ◽  
Emulsion Liquid Membrane ◽  
Tetramethylthiuram Disulfide ◽  
Mobile Carrier ◽  
Liquid Membrane Extraction

The recovery of precious metals such as silver from photographic wastes is required in order to save raw materials and to protect the environment from dispersed compound, especially heavy metals. For that matter, several technologies have been used such as precipitation, electrolytic, and ion exchange processes which offer some advantages as well as drawbacks over others. Recently, emulsion liquid membrane extraction has been recognized to be a potential process for industrial wastes treatment and recovery of heavy metals. This process has the ability to selectively separate and rapidly concentrate metals through its very thin layer liquid membrane which has a large interfacial area. An attempt was made to recover silver from liquid photographic wastes using tetramethylthiuram disulfide as a mobile carrier. The important variables affecting the emulsion liquid membrane (ELM) process including residence time, surfactant concentration, carrier concentration, level of agitation and phase ratio between emulsion and feed phase were investigated. The results showed that tetramethylthiuram disulfide is selective towards silver (>80%) compared to other metals in the photographic waste. The highest silver extraction is obtained using 0.05 M tetramethylthiuram disulfide, 3% (w/v) Span 80, 300 rpm stirring speed, 1.0 M thiourea in 0.1 M HCl stripping agent, 1:3 of treat ratio, and toluene as the diluent.

Sign in / Sign up

Export Citation Format

Share Document