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Journal articles on the topic 'Supported Liquid Membranes (SLM)'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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1

Yang, X. J., A. G. Fane, and S. MacNaughton. "Removal and recovery of heavy metals from wastewaters by supported liquid membranes." Water Science and Technology 43, no. 2 (January 1, 2001): 341–48. http://dx.doi.org/10.2166/wst.2001.0109.

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The removal and recovery of Cu, Cr and Zn from plating rinse wastewater using supported liquid membranes (SLM) are investigated. SLMs with specific organic extractants as the liquid membrane carriers in series are able to remove and concentrate heavy metals with very high purity, which is very promising for recycling of heavy metals in the electroplating industry. A technical comparison between the membrane process and the conventional chemical precipitation process was made.

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2

Reyes-Aguilera, J. A., M. P. Gonzalez, R. Navarro, T. I. Saucedo, and M. Avila-Rodriguez. "Supported liquid membranes (SLM) for recovery of bismuth from aqueous solutions." Journal of Membrane Science 310, no. 1-2 (March 5, 2008): 13–19. http://dx.doi.org/10.1016/j.memsci.2007.10.020.

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3

Huang, Du Shu, Yong Min, Li Hua Yao, Jin Yang, Ya Shun Chen, and Wei Liu. "Partition-Diffusion Model for Enantioseparation of Phenylalanine Using Hollow Fiber SLM." Advanced Materials Research 485 (February 2012): 44–47. http://dx.doi.org/10.4028/www.scientific.net/amr.485.44.

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This paper deals with the partittion-diffusion model of transport and enantioseparation of phenylalanine across hollow fiber supported liquid membranes. Observed partition coefficient between the feed phase and the membrane phase, the stripping phase and the membrane phase, mass transfer resistance of boundary layer in strip phase inside the hollow fibers, boundary layer in feed phase and the diffusion in the membrane phase are taken into account in the model equations.

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4

Ashraf, Mohammad Waqar, Nidal Abulibdeh, and Abdus Salam. "Selective Removal of Malachite Green Dye from Aqueous Solutions by Supported Liquid Membrane Technology." International Journal of Environmental Research and Public Health 16, no. 18 (September 19, 2019): 3484. http://dx.doi.org/10.3390/ijerph16183484.

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A lab-scale study on the application of supported liquid membranes (SLM) has been conducted for recovery and selective removal of Malachite Green dye from wastewater. Naturally occurring non-toxic vegetable oils have been used as membrane liquids. Polyvinylidene fluoride (PVDF) films have been used as supports for the liquid membrane. Various parameters affecting the dye permeation such as initial dye concentration, pH, stripping acid concentration, oil viscosity and membrane stability have been investigated. The highest flux value (1.65 × 10−5 mg/cm2/sec) was obtained with a sunflower oil supported membrane at pH 11 in the feed and 0.25 M HCl in the stripping solution. The membrane showed good stability under optimum conditions and maximum transport was achieved in 8 h of permeation time.

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5

Parhi, P. K. "Supported Liquid Membrane Principle and Its Practices: A Short Review." Journal of Chemistry 2013 (2013): 1–11. http://dx.doi.org/10.1155/2013/618236.

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The present paper on the supported liquid membrane (SLM) deals with the general principles and applications, followed by the uphill transportation characteristic of SLM. The liquid-liquid extraction with supported liquid membrane is one of the best alternate and promising technologies for the extraction of metal ions from solutions over other hydrometallurgical separation processes. The salient features of the supported liquid membrane (SLM) technique such as simultaneous extraction and stripping, low solvent inventory, process economy, high efficiency, less extractant consumption, and operating costs are discussed in detail. The supported liquid membrane of hollow fiber type provides high interfacial surface area for achieving maximum metal flux. Also the use of different organic extractants for SLM has been discussed.

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6

Drapała, A., P. Dzygiel, J. A. Jönsson, and P. Wieczorek. "Supported liquid membrane extraction of peptides." Acta Biochimica Polonica 48, no. 4 (December 31, 2001): 1113–16. http://dx.doi.org/10.18388/abp.2001_3874.

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The application of supported liquid membrane (SLM) extraction for the enrichment of short peptides is presented. The extraction efficiency is dependent on the pH of donor phase and salt concentration in acceptor phase. Moreover, the extraction efficiency is also influenced by the peptide amino-acid sequence and hydrophobicity.

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7

Naim, Mona M., Abeer A. Moneer, Mahmoud M. Elewa, and Ahmed A. El-Shafei. "Desalination using modified configuration of supported liquid membrane with enhancement of mass transfer of NaCl." Water Science and Technology 79, no. 1 (January 1, 2019): 175–87. http://dx.doi.org/10.2166/wst.2019.039.

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Abstract Supported liquid membranes (SLM) suffer from very slow mass transfer of the solute from the donor phase (DP) to the receptor phase (RP) through the liquid membrane (LM). In the present work, an attempt was made to accelerate the mass transfer in SLM by creating a modified configuration in which the DP and RP are made to flow either co- or counter-currently to each other. Variables, which could affect the removal of NaCl, were the volume ratio of DP to RP, type and quantity of sequestering agent (SA), presence of mobile carrier (MC), type of LM, and flow rate of DP and RP. The results showed that the higher the flow rate of DP and RP, the higher the mass transfer of NaCl. Quantity and type of SA and type of LM were prime important factors. Remarkably, the time required for transfer of NaCl from DP to RP was reduced from several hours in the case of stagnant SLM to several minutes in the present work. The mass transfer of NaCl was analysed based on kinetic laws of two consecutive irreversible first-order reactions. The values achieved establish the process is diffusion controlled, and the membrane entrance rate constants increase directly with initial concentration (Ci) and inversely with quantity of SA.

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8

Tayeb, Rafik, Claudia Fontas, Mahmoud Dhahbi, Sophie Tingry, and Patrick Seta. "Cd(II) transport across supported liquid membranes (SLM) and polymeric plasticized membranes (PPM) mediated by Lasalocid A." Separation and Purification Technology 42, no. 2 (March 2005): 189–93. http://dx.doi.org/10.1016/j.seppur.2004.07.006.

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9

Van de Voorde, I., L. Pinoy, and R. F. De Ketelaere. "Recovery of nickel ions by supported liquid membrane (SLM) extraction." Journal of Membrane Science 234, no. 1-2 (May 2004): 11–21. http://dx.doi.org/10.1016/j.memsci.2004.01.002.

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10

Vander Linden, J. "Selective recuperation of copper by supported liquid membrane (SLM) extraction." Journal of Membrane Science 139, no. 1 (February 4, 1998): 125–35. http://dx.doi.org/10.1016/s0376-7388(97)00252-4.

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11

Muthuraman, G. "STUDIES OF SOLVENT EXTRACTION AND SUPPORTED LIQUID MEMBRANE WITH REACTIVE DYES FROM AQUEOUS SOLUTIONS USING ALIQUOT 336 AS CARRIER." Green Chemistry & Technology Letters 1, no. 01 (November 17, 2015): 54–60. http://dx.doi.org/10.18510/gctl.2015.118.

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The liquid-liquid extraction (LLE) and supported liquid membrane (SLM) studies of reactive dyes namely Gold Yellow (GYHE-R) and Reactive Green HE 4BD (RGHE-4BD) from aqueous solution using Aliquot 336 as the carrier has been investigated. Polytetrafluoroethylene (PTFE) membrane with 0.5 μm pore size has been used after impregnated with Aliquot 336 in dichloromethane. In liquid liquid extraction the following parameters had been optimized; pH of feed, diluent, carrier , strip and dye concentration and the same parameters have been applied to supported liquid membrane (SLM) study to transport dye from aqueous solution.The main advantages SLM study is; the extraction and stripping as single stage process and low consumption of carrier in the membrane phase compared to the solvent extraction process. The other parameters such as transport time, stirring speed and mechanism of dye transport has also studied by SLM. The percentage of transport of dye and flux rate increases with increasing time. The stability of membrane is satisfactory over 5 days.

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12

Kislik, V. S., and A. M. Eyal. "Hybrid liquid membrane (HLM) and supported liquid membrane (SLM) based transport of titanium (IV)." Journal of Membrane Science 111, no. 2 (March 1996): 273–81. http://dx.doi.org/10.1016/0376-7388(95)00257-x.

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13

Rajendran, V., S. M. Saufi, M. A. K. Zahari, and A. W. Mohammad. "Study on stripping phase conditions on the levulinic acid extraction using supported liquid membrane." Journal of Mechanical Engineering and Sciences 13, no. 3 (September 27, 2019): 5625–36. http://dx.doi.org/10.15282/jmes.13.3.2019.25.0451.

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Supported liquid membrane (SLM) is the most effective technique to extract and recover the desired product from the biomass products in a single step. The study of the operation parameters in SLM system is very important to improve the yield of extraction and recovery of the product. In this study, different types of stripping agents such as sodium hydroxide (NaOH), sodium carbonate, hydrochloric acid, trimethylamine, and water were tested in the SLM system to extract levulinic acid (LA). By using 0.3 M trioctylamine in 2-ethyl-1-hexanol as liquid membrane phase, it was found that NaOH was the best stripping agent to extract LA. The concentration of the NaOH stripping agent was varied from 0.25 M to 1 M. The best stripping agent concentration was 0.5 M, which gave an LA extraction of 86% from a 10 g/L LA aqueous solution. The flow rate of the feed and stripping phase was investigated from 25 mL/min to 125 mL/min. SLM operated at 75 L/min was found to be adequate in reducing the boundary layer thickness at both sides of the SLM phases without any leakage of the liquid membrane and breakage of the matrix support. At the best stripping condition, 89% of the LA was extracted using 0.5 M NaOH that operated at flow rate of 75 mL/min.

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14

Shahrezaei, Fatemeh, Mojtaba Shamsipur, Mohammad Bagher Gholivand, Parvin Zohrabi, Nasrin Babajani, Abdolreza Abri, Adeleh Moshtaghi Zonouz, and Hemayat Shekaari. "A highly selective green supported liquid membrane by using a hydrophobic deep eutectic solvent for carrier-less transport of silver ions." Analytical Methods 12, no. 38 (2020): 4682–90. http://dx.doi.org/10.1039/d0ay01266a.

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A new supported liquid membrane (SLM) was designed by using a suitable deep eutectic solvent (DES) as the hydrophobic liquid membrane phase for the selective and facilitated carrier-less transport of Ag⁺ ions.

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15

Raizada, Pankaj, and Uma Sharma. "Extraction and Transport of Amino Acids Using Kryptofix 5 as Carrier through Liquid Membrane." Journal of Chemistry 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/701570.

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The present work explores membrane-mediated extraction and transport studies of amino acids through artificial bulk liquid membrane system with kryptofix 5 as a carrier. The various reaction parameters such as amino acid concentration, carrier concentration, time, pH, and stirring effect were studied to optimize reaction conditions. The stirring of source and receiving phases increased the efficiency of extraction process. Noncyclic receptor kryptofix 5 with five oxyethylene units and terminal aromatic donor end groups governs its transport and extraction efficiency. The extraction and transport efficiency followed the following trend: valine > alanine > glycine > threonine. Supported liquid membrane (SLM) studies were performed using cellulose nitrate, PTFE, eggshell, and onion membranes. The egg shell membrane support proved to be most efficient due to intricate network of water insoluble proteins fibers with very high surface area and homogeneity.

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16

González-Álvarez, Rafael J., José A. López-López, Juan J. Pinto, and Carlos Moreno. "A Critical Study of the Effect of Polymeric Fibers on the Performance of Supported Liquid Membranes in Sample Microextraction for Metals Analysis." Membranes 10, no. 10 (October 5, 2020): 275. http://dx.doi.org/10.3390/membranes10100275.

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Popularity of hollow fiber-supported liquid membranes (HF-SLM) for liquid-phase microextraction (HF-LPME) has increased in the last decades. In particular, HF-SLM are applied for sample treatment in the determination and speciation of metals. Up to the date, optimization of preconcentration systems has been focused on chemical conditions. However, criteria about fiber selection are not reflected in published works. HFs differ in pore size, porosity, wall thickness, etc., which can affect efficiency and/or selectivity of chemical systems in extraction of metals. In this work, Ag+ transport using tri-isobutylphosphine sulfide (TIBPS) has been used as a model to evaluate differences in metal transport due to the properties of three different fibers. Accurel PP 50/280 fibers, with a higher effective surface and smaller wall thickness, showed the highest efficiency for metal transport. Accurel PP Q3/2 exhibited intermediate efficiency but easier handling and, finally, Accurel PP S6/2 fibers, with a higher wall thickness, offered poorer efficiency but the highest stability and capability for metal speciation. Summarizing, selection of the polymeric support of HF-SLM is a key factor in their applicability of LPME for metals in natural waters.

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17

Harruddin, Norlisa, Syed M. Saufi, Che Ku M. Faizal, and Abdul Wahab Mohammad. "Effect of VIPS fabrication parameters on the removal of acetic acid by supported liquid membrane using a PES–graphene membrane support." RSC Advances 8, no. 45 (2018): 25396–408. http://dx.doi.org/10.1039/c8ra03392g.

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18

Religa, P., J. Rajewski, P. Gierycz, and R. Świetlik. "Supported liquid membrane system for Cr(III) separation from Cr(III)/Cr(VI) mixtures." Water Science and Technology 69, no. 12 (April 3, 2014): 2476–81. http://dx.doi.org/10.2166/wst.2014.152.

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This paper presents the results of analyses of the chromium(III) transport process from mixtures of Cr(III)/Cr(VI) ions using supported liquid membranes (SLM), in which dinonylnaphthalene sulfonic acid (DNNSA) and di(2-ethylhexyl) phosphoric acid (D2EHPA) were used as carriers. In both cases the membrane worked as a selective barrier for Cr(VI) ions. The increase in both the time of Cr(VI) ions–carrier interaction and the Cr(VI) concentration in the feed phase negatively influenced the Cr(III) separation. The polarizing layer consisting of Cr(VI) ions prevents the access of Cr(III) ions to the inter phase surface and leads to the deactivation of the carrier, which is the result of the strong oxidation properties of Cr(VI) ions. These factors meant that, in the case of the membrane with DNNSA, the membrane could not be used for the effective separation of Cr(III) from the Cr(III)/Cr(VI) mixture. On the other hand, the membrane with D2EHPA can be used for fast and efficient transport of Cr(III) ions, but only for strictly defined process parameters, i.e. where the level of chromium(VI) concentration is below 10−3M and with intensive feed phase mixing.

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19

FONTAS, C., R. TAYEB, S. TINGRY, M. HIDALGO, and P. SETA. "Transport of platinum(IV) through supported liquid membrane (SLM) and polymeric plasticized membrane (PPM)." Journal of Membrane Science 263, no. 1-2 (October 15, 2005): 96–102. http://dx.doi.org/10.1016/j.memsci.2005.04.008.

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20

Dong, Feng-Qiang, Qing-Sheng Wu, Dong-Mei Sun, and Ya-Ping Ding. "Morphology-tunable synthesis of SrWO4 crystals via biomimetic supported liquid membrane (SLM) system." Journal of Materials Science 43, no. 2 (October 17, 2007): 641–44. http://dx.doi.org/10.1007/s10853-007-2165-x.

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21

Dong, Feng-Qiang, Qing-Sheng Wu, Dong-Mei Sun, and Ya-Ping Ding. "Morphology-tunable synthesis of SrWO4 crystals via biomimetic supported liquid membrane (SLM) system." Journal of Materials Science 43, no. 8 (February 7, 2008): 2970. http://dx.doi.org/10.1007/s10853-007-2410-3.

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22

Othmen, Kemla, Sana Ncib, Afef Barhoumi, Lassaad Dammak, and Wided Bouguerra. "Recovery of nickel ions by supported liquid membrane (SLM) using D2EHPA as carrier." DESALINATION AND WATER TREATMENT 225 (2021): 422–29. http://dx.doi.org/10.5004/dwt.2021.27146.

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23

Bakonyi, Péter, László Koók, Tamás Rózsenberszki, Gábor Tóth, Katalin Bélafi-Bakó, and Nándor Nemestóthy. "Development and Application of Supported Ionic Liquid Membranes in Microbial Fuel Cell Technology: A Concise Overview." Membranes 10, no. 1 (January 18, 2020): 16. http://dx.doi.org/10.3390/membranes10010016.

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Membrane separators are key elements of microbial fuel cells (MFCs), especially of those constructed in a dual-chamber configuration. Until now, membranes made of Nafion have been applied the most widely to set-up MFCs. However, there is a broader agreement in the literature that Nafion is expensive and in many cases, does not meet the actual (mainly mass transfer-specific) requirements demanded by the process and users. Driven by these issues, there has been notable progress in the development of alternative materials for membrane fabrication, among which those relying on the deployment of ionic liquids are emerging. In this review, the background of and recent advances in ionic liquid-containing separators, particularly supported ionic liquid membranes (SILMs), designed for MFC applications are addressed and evaluated. After an assessment of the basic criteria to be fulfilled by membranes in MFCs, experiences with SILMs will be outlined, along with important aspects of transport processes. Finally, a comparison with the literature is presented to elaborate on how MFCs installed with SILM perform relative to similar systems assembled with other, e.g., Nafion, membranes.

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24

Indarti, Dwi, Novitasari Novitasari, and Yudi Aris Sulistyo. "Utilization of Supported Liquid Membrane (SLM) in Separation of Pb(II) by Varying Concentration of Carrier and Feed Solution." Jurnal ILMU DASAR 18, no. 2 (December 4, 2017): 139. http://dx.doi.org/10.19184/jid.v18i2.4708.

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Supported liquid membrane (SLM) was prepared by reacting host material with carrier compounds. Carrier compound was Polyethylene Glycol-400 (PEG-400) that have been used with the variation of concentration 0, 2, 4, and 6%. The effect of its variations in SLM was characterized by FTIR and the performance was examined by transporting feed solution Pb(NO3)2 with variation 1, 5, 10, 15, and 25 ppm for 3 hours in pH 3. FTIR spectra depicted that the increasing concentration of PEG would arise the intensity of typical PEG’s functional groups such as -OH, C-O-C, and CH2-CH2 sp3. The optimum transport Pb(II) was achieved by SLM with 6% PEG. Variation of feed solution concentration showed the main effect in SLM activity. The higher of feed solution concentration would decrease of transport activity. The % extract and % recovery 1 ppm was higher than 25 ppm with 72,5% and 70,27% than 6,1% and 3,59%, respectively. Keywords: supported liquid membrane, Pb(II), poly ethylene glycol, extraction and recovery, carrier compound

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25

Akhmetshina, Alsu, Nail Yanbikov, Artem Atlaskin, Maxim Trubyanov, Amal Mechergui, Ksenia Otvagina, Evgeny Razov, Alla Mochalova, and Ilya Vorotyntsev. "Acidic Gases Separation from Gas Mixtures on the Supported Ionic Liquid Membranes Providing the Facilitated and Solution-Diffusion Transport Mechanisms." Membranes 9, no. 1 (January 5, 2019): 9. http://dx.doi.org/10.3390/membranes9010009.

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Nowadays, the imidazolium-based ionic liquids containing acetate counter-ions are attracting much attention as both highly selective absorbents of the acidic gases and CO2 carriers in the supported ionic liquid membranes. In this regard, the investigation of the gas transport properties of such membranes may be appropriate for better understanding of various factors affecting the separation performance and the selection of the optimal operating conditions. In this work, we have tested CH4, CO2 and H2S permeability across the supported ionic liquid membranes impregnated by 1-butyl-3-methylimidazolium acetate (bmim[OAc]) with the following determination of the ideal selectivity in order to compare the facilitated transport membrane performance with the supported ionic liquid membrane (SILM) that provides solution-diffusion mechanism, namely, containing 1-butyl-3-methylimidazolium tetrafluoroborate (bmim[BF4]). Both SILMs have showed modest individual gases permeability and ideal selectivity of CO2/CH4 and H2S/CH4 separation that achieves values up to 15 and 32, respectively. The effect of the feed gas mixture composition on the permeability of acidic gases and permeselectivity of the gas pair was investigated. It turned out that the permeation behavior for the bmim[OAc]-based SILM toward the binary CO2/CH4, H2S/CH4 and ternary CO2/H2S/CH4 mixtures was featured with high acidic gases selectivity due to the relatively low methane penetration through the liquid phase saturated by acidic gases.

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26

Gega, J., and P. Otrembska. "Separation of Ni(II) and Cd(II) Ions with Supported Liquid Membranes (SLM) using D2EHPA as a Carrier." Separation Science and Technology 49, no. 11 (July 18, 2014): 1756–60. http://dx.doi.org/10.1080/01496395.2014.906463.

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27

Talebi, Amir, Tjoon Tow Teng, Abbas F. M. Alkarkhi, and Norli Ismail. "Nickel ion coupled counter complexation and decomplexation through a modified supported liquid membrane system." RSC Advances 5, no. 48 (2015): 38424–34. http://dx.doi.org/10.1039/c5ra00156k.

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28

Xue, Juan Qin, Ni Na Liu, Guo Ping Li, and Long Tao Dang. "Characterization of a supported ionic liquid membrane used for the removal of cyanide from wastewater." Water Science and Technology 76, no. 11 (September 5, 2017): 3142–49. http://dx.doi.org/10.2166/wst.2017.443.

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Abstract This work evaluated the performance of ionic liquids (ILs) in supported liquid membranes in the removal of total cyanide from wastewater. Membranes were characterized by scanning electron microscopy and contact angle measurements to study the membrane morphology and wetting ability. In particular, the effects of operational parameters such as membrane immersion time, feed-phase concentration, and pH on cyanide removal were investigated. ILs are organic salts that are entirely composed of organic cations and either organic or inorganic anions. Since their vapor pressure is negligible, they can be handled easily; this characteristic gives rise to their ‘green’ nature. In this study, a hydrophobic IL, 1-butyl-3-methylimidazolium hexafluorophosphate ([Bmim]PF6), was immobilized in the pores of a solid polymeric support made of polyvinylidene fluoride. The optimal conditions were as follows: 1 hour membrane immersion time, 312.24 mg/L feed-phase concentration, a feed-phase pH of 4, 3% NaOH solution, and 1 hour stirring time. The cyanide removal was 95.31%. The treatment of cyanide using supported ionic liquid membrane (SILM) technology is a method with potential applications in industry.

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29

Benjjar, Abdelkhalek, Tarik Eljaddi, Oussama Kamal, Laurent Lebrun, and Miloudi Hlaibi. "Methyl Cholate and Resorcinarene New Carriers for the Recovery of Cr(III) Ions by Supported Liquid Membranes (SLM)s." Open Journal of Physical Chemistry 03, no. 03 (2013): 103–14. http://dx.doi.org/10.4236/ojpc.2013.33013.

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30

Abejón, Ricardo, Javier Rabadán, Aurora Garea, and Angel Irabien. "Comparison of Supported Ionic Liquid Membranes and Polymeric Ultrafiltration and Nanofiltration Membranes for Separation of Lignin and Monosaccharides." Membranes 10, no. 2 (February 14, 2020): 29. http://dx.doi.org/10.3390/membranes10020029.

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Lignin is one of the three main components of lignocellulosic biomass and must be considered a raw material with attractive applications from an economic and ecological point of view. Therefore, biorefineries must have in mind the most adequate processing to obtain high-quality lignin and the separation tasks that play a key role to improve the purity of the lignin. Separation techniques based on membranes are a promising way to achieve these requirements. In this work, the separation performance of the SILM (Supported Ionic Liquid Membrane) formed with [BMIM][DBP] as IL (Ionic Liquid) and PTFE as membrane support was compared to a nanofiltration (NF) membrane (NP010 by Microdyn-Nadir) and two ultrafiltration (UF) membranes (UF5 and UF10 by Trisep). The SILM showed selective transport of Kraft lignin, lignosulphonate, xylose, and glucose in aqueous solutions. Although it was stable under different conditions and its performance was improved by the integration of agitation, it was not competitive when compared to NF and UF membranes, although the latter ones suffered fouling. The NF membrane was the best alternative for the separation of lignosulphonates from monosaccharides (separation factors around 75 while SILM attained only values lower than 3), while the UF5 membrane should be selected to separate Kraft lignin and monosaccharides (separation factors around 100 while SILM attained only values below 3).

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31

Elhassadi, A. A., and D. D. Do. "Effects of a Carrier and Its Diluent on the Transport of Metals across Supported Liquid Membranes (SLM). I. Solubility Mechanism." Separation Science and Technology 21, no. 3 (May 1986): 267–83. http://dx.doi.org/10.1080/01496398608058377.

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32

Elhassadi, A. A., and D. D. Do. "Effects of a Carrier and Its Diluent on the Transport of Metals across Supported Liquid Membranes (SLM). II. Viscosity Effect." Separation Science and Technology 21, no. 3 (May 1986): 285–97. http://dx.doi.org/10.1080/01496398608058378.

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33

Ríos, A. P. de los, F. J. Hernández-Fernández, F. Tomás-Alonso, J. M. Palacios, D. Gómez, M. Rubio, and G. Víllora. "A SEM–EDX study of highly stable supported liquid membranes based on ionic liquids." Journal of Membrane Science 300, no. 1-2 (August 2007): 88–94. http://dx.doi.org/10.1016/j.memsci.2007.05.010.

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34

Sun, Dong-Mei, Qing-Sheng Wu, and Ya-Ping Ding. "A novel method for crystal control: synthesis and design of strontium carbonate with different morphologies by supported liquid membrane." Journal of Applied Crystallography 39, no. 4 (July 15, 2006): 544–49. http://dx.doi.org/10.1107/s0021889806015925.

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A biomimetic supported liquid membrane (SLM) system was employed to control the morphology of strontium carbonate. Some interesting morphologies, including rods, shuttles and spheres, can be readily generated by using citric acid, nitrilotriacetic acid and ethylenediaminetetraacetic acid as cooperative modifiers in the mineralization process, under the conditions of pH 10, 0.01% of crystal modifier and ambient temperature. Seeking the cooperative balance of the SLM, the modifier agent and its concentration is the key factor in this system. In addition, this method was successfully applied to the morphology control of other alkaline earth metal carbonates, indicating its general applicability in materials preparation.

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35

Dimulescu (Nica), Ioana, Aurelia Nechifor, Cristina Bǎrdacǎ (Urducea), Ovidiu Oprea, Dumitru Paşcu, Eugenia Totu, Paul Albu, Gheorghe Nechifor, and Simona Bungău. "Accessible Silver-Iron Oxide Nanoparticles as a Nanomaterial for Supported Liquid Membranes." Nanomaterials 11, no. 5 (May 1, 2021): 1204. http://dx.doi.org/10.3390/nano11051204.

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The present study introduces the process performances of nitrophenols pertraction using new liquid supported membranes under the action of a magnetic field. The membrane system is based on the dispersion of silver–iron oxide nanoparticles in n-alcohols supported on hollow microporous polypropylene fibers. The iron oxide–silver nanoparticles are obtained directly through cyclic voltammetry electrolysis run in the presence of soluble silver complexes ([AgCl2]−; [Ag(S2O3)2]3−; [Ag(NH3)2]+) and using pure iron electrodes. The nanostructured particles are characterized morphologically and structurally by scanning electron microscopy (SEM and HFSEM), EDAX, XRD, and thermal analysis (TG, DSC). The performances of the nitrophenols permeation process are investigated in a variable magnetic field. These studies show that the flux and extraction efficiency have the highest values for the membrane system embedding iron oxide–silver nanoparticles obtained electrochemically in the presence of [Ag(NH3)2]+ electrolyte. It is demonstrated that the total flow of nitrophenols through the new membrane system depends on diffusion, convection, and silver-assisted transport.

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Baczyńska, Monika, Magdalena Regel-Rosocka, Maria Teresa Coll, Agustin Fortuny, Ana Maria Sastre, and Maciej Wiśniewski. "Transport of Zn(II), Fe(II), Fe(III) across polymer inclusion membranes (PIM) and flat sheet supported liquid membranes (SLM) containing phosphonium ionic liquids as metal ion carriers." Separation Science and Technology 51, no. 15-16 (June 10, 2016): 2639–48. http://dx.doi.org/10.1080/01496395.2016.1174265.

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Ashraf, Muhammad Waqar. "Removal of methylene blue dye from wastewater by using supported liquid memberane technology." Polish Journal of Chemical Technology 18, no. 2 (June 1, 2016): 26–30. http://dx.doi.org/10.1515/pjct-2016-0025.

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Abstract The present work describes the application of Supported Liquid Membrane (SLM) technology towards the removal and recovery of a cationic dye (Methylene Blue) from aqueous solutions. Natural and non-toxic vegetable oils have been impregnated on microporous polymeric films of polyvinylidene fluoride (PVDF) to constitute a liquid membrane. Different parameters affecting the transport, like pH of feed solution, acid concentration in the strip solution, initial dye concentration, oil types and stirring speeds have been investigated. Highest value of flux (1.7 × 10−5 mg/cm2/sec1) for methylene blue dye was achieved with sunflower oil impregnated on the PVDF support, with pH maintained at 12 in the feed solution and 0.3 M hydrochloric acid concentration in the strip solution. It took 6 hours to transport maximum amount of dye under optimum conditions.

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Sanmugam, Sathiya, Norlisa Harruddin, and Syed M. Saufi. "Effect of coagulation bath temperature during preparation of PES hollow fiber supported liquid membrane for acetic acid removal." Chemical Engineering Research Bulletin 19 (September 10, 2017): 118. http://dx.doi.org/10.3329/cerb.v19i0.33805.

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<p>Acetic acid is a byproduct of acid hydrolysis of biomass during sugar recovery step in biofuel production. Acetic acid can inhibit the enzyme used during fermentation of sugar to the ethanol. Hollow fiber supported liquid membrane (SLM) was used in this study to remove acetic acid from aqueous solution. Liquid membrane was formulated using trioctylamine and 2-ethyl hexanol as a carrier and solvent, respectively. The hollow fiber membrane support was prepared from 15 wt.% polyethersulfone, 42.5 wt.% polyethyleneglycol 200 and 42.5 wt.% dimethylacetamide. The effect of coagulation bath temperature (CBT) at 30<sup>º</sup>C, 40<sup>º</sup>C and 50<sup>º</sup>C during hollow fiber membrane spinning process was investigated. The porosity of the membrane increased as the CBT increased. The porosity of the membrane prepared using CBT of 30ºC, 40<sup>º</sup>C and 50<sup>º</sup>C were 35.7%, 46.7% and 61.6%, respectively. SLM process using hollow fiber membrane prepared at 50ºC of coagulation bath was able to remove 52% of acetic acid from the aqueous solution.</p><p>Chemical Engineering Research Bulletin 19(2017) 118-122</p>

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Ulewicz, Malgorzata, and Elzbieta Radzyminska-Lenarcik. "Supported Liquid (SLM) and Polymer Inclusion (PIM) Membranes Pertraction of Copper(II) from Aqueous Nitrate Solutions by 1-Hexyl-2-Methylimidazole." Separation Science and Technology 47, no. 9 (May 15, 2012): 1383–89. http://dx.doi.org/10.1080/01496395.2012.672523.

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Ur Rehman, Hanif, Gul Akhtar, Haroon Ur Rashid, Nauman Ali, Imtiaz Ahmad, Saeed Ur Rehman, Kamin Khan, and Muhammad Arshad. "Transport of Zn (II) by TDDA-Polypropylene Supported Liquid Membranes and Recovery from Waste Discharge Liquor of Galvanizing Plant of Zn (II)." Journal of Chemistry 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/7569354.

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The facilitated passage of Zn (II) across flat sheet supported liquid membrane saturated with TDDA (tri-n-dodecylamine) in xylene membrane phase has been investigated. The effect of acid and metal ion concentration in the feed solution, the carrier concentration in membrane phase, stripping agent concentration in stripping phase, and coions on the extraction of Zn (II) was investigated. The stoichiometry of the extracted species, that is, complex, was investigated on slope analysis method and it was found that the complex (LH)2·Zn(Cl2) is responsible for transport of Zn (II). A mathematical model was developed for transport of Zn (II), and the predicted results strongly agree with experimental ones. The mechanism of transport was determined by coupled coion transport mechanism with H+and Cl−coupled ions. The optimized SLM was effectively used for elimination of Zn (II) from waste discharge liquor of galvanizing plant of Zn (II).

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Qian, Zexin, Henk Miedema, Sevil Sahin, Louis C. P. M. de Smet, and Ernst J. R. Sudhölter. "Separation of alkali metal cations by a supported liquid membrane (SLM) operating under electro dialysis (ED) conditions." Desalination 495 (December 2020): 114631. http://dx.doi.org/10.1016/j.desal.2020.114631.

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ZAGHBANI, A., R. TAYEB, I. BONNAMOUR, C. FELIX, F. VOCANSON, R. LAMARTINE, M. DHAHBI, and P. SETA. "Affinity membranes for the extraction of Cd metal ions by facilitated transport ensured by a new thiacalix[4]arene complexing agent incorporated in supported liquid membranes (SLM)." Journal of Membrane Science 258, no. 1-2 (August 1, 2005): 5–7. http://dx.doi.org/10.1016/j.memsci.2005.04.007.

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43

Nawi, N. I. M., M. R. Bilad, N. A. H. M. Nordin, M. O. Mavukkandy, Z. A. Putra, M. D. H. Wirzal, J. Jaafar, and Asim L. Khan. "Exploiting the Interplay between Liquid-Liquid Demixing and Crystallization of the PVDF Membrane for Membrane Distillation." International Journal of Polymer Science 2018 (December 5, 2018): 1–10. http://dx.doi.org/10.1155/2018/1525014.

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Membrane distillation (MD) purifies water by transporting its vapor through a hydrophobic membrane. An ideal MD membrane poses high water flux and high fouling, scaling, and wetting resistances. In this study, we develop polyvinylidene fluoride (PVDF) membranes for MD by focusing on reduction of PVDF degree of crystallinity. We explore the roles of dope solution temperature in dictating the phase separation mechanisms as well as the structure and the performance of semicrystalline PVDF membranes. DSC spectra show that higher dope solution temperature depresses crystallinity via formation of imperfect crystal. Such findings were also supported by FTIR and XRD results. The SEM images reveal formation of spherulite-like morphology in the membrane matrices for membranes prepared from high temperature dope solutions. A good balance between solid-liquid and liquid-liquid phase separations that offers low degree of crystallinity was found at a dope solution temperature of 60°C (PVDF-60), which showed the MD flux of 18 l/m2 h (vs. 6 l/m2 h for temperature of 25°C, as a benchmark) and nearly complete salt rejection when run at hot and cold temperatures of 65°C and 25°C, respectively. The PVDF-60 shows a high wetting resistance and stable MD flux of 10.5 l/m2 h over a 50 h test for treating brine solution as the feed (70 g NaCl/l).

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Kurniasih, Yeti, Ahmadi Ahmadi, and Baiq Asma Nufida. "Pemisahan Perak dari Limbah Fotorontgen dengan Teknik Membran Cair Berpendukung Menggunakan Pengemban Gabungan TBP dan D2EHPA." Hydrogen: Jurnal Kependidikan Kimia 8, no. 1 (June 17, 2020): 40. http://dx.doi.org/10.33394/hjkk.v8i1.2582.

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The photorontgen process produces waste that is harmful to the environment because it contains silver ions that are toxic to living organisms. The silver content in photorontgent waste is 2000 mg / L, while the permissible threshold value for silver in aquatic is 0.1 - 1.0 mg / L, so the disposal of photorontgent waste into the waters will be dangerous. However, silver metal has high economic value so that silver metal separation from x-ray waste is required, in addition to reducing the environmental burden due to silver metal pollution, it is also expected to reuse the silver metal economically. The technique of separation that can be used is a supported liquid membrane (Supported Liquid Membrane, SLM). This technique has the advantage that its separation process is relatively easy because the extraction and stripping process takes place in one stage, the carrying solution as extractant is more stable in the supporting membrane and the amount of extractant required is small. This research studies the effect of waste dilution factors on the effieciency separation of silver from photorontgen waste. Separation was carried out at the optimum SLM condition by using combined carrier compound TBP and D2EHPA with a ratio of 0.25: 0.75, total concentration of 1 M in kerosene and 0.1 M HNO3 as stripping phase. Sample waste was diluted by a factor dilution 25, 50, 75 and 100 times. Measurement of metal content before and after separation is done with AAS. The results showed that the waste dilution factor influenced the efficiency of silver trasnpor through SLM. Percent of silver separation was obtained 21.33% in waste with 100 times dilution.

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Panja, Surajit, Prasanta Kumar Mohapatra, and Subhash Chandra Tripathi. "Facilitated transport of uranium(VI) across supported liquid membranes (SLM) containing T2EHDGA: Part II. Nature of feed, pore size and temperature on pertraction rates." DESALINATION AND WATER TREATMENT 38 (2012): 207–14. http://dx.doi.org/10.5004/dwt.2012.2320.

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46

Panja, Surajit, Prasanta Kumar Mohapatra, and Subhash Chandra Tripathi. "Facilitated transport of uranium(VI) across supported liquid membranes (SLM) containing T2EHDGA: Part II. Nature of feed, pore size and temperature on pertraction rates." Desalination and Water Treatment 38, no. 1-3 (January 2012): 230–37. http://dx.doi.org/10.1080/19443994.2012.664368.

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47

Kamran Haghighi, Hossein, Mehdi Irannajad, Maria Teresa Coll, and Ana Maria Sastre. "Non-Dispersive Extraction of Ge(IV) from Aqueous Solutions by Cyanex 923: Transport and Modeling Studies." Metals 9, no. 6 (June 11, 2019): 676. http://dx.doi.org/10.3390/met9060676.

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Transport process of germanium from an aqueous solution containing oxalic acid and 100 mg/L Ge was studied. Cyanex 923 immobilized in a polytetrafluoroethylene membrane was employed as a carrier in a flat-sheet supported liquid membrane (FSSLM) system. The speciation of the germanium ion in the oxalic acid medium and related diagrams were applied to study the transport of germanium. The effective parameters such as oxalic acid, carrier concentration, and strip reagent composition were evaluated in this study. Based on the experimental data, the oxalic acid and carrier concentrations of 0.075 mol/L and 20% v/v were the condition in which the efficient germanium transport was achieved, respectively. The concentration range of 0.04–0.1 mol/L was selected for sodium hydroxide (NaOH) as a strip reagent providing the best efficiency to transport germanium through the supported liquid membrane (SLM) system. Furthermore, the permeation model was obtained to calculate the mass transfer resistance of the membrane (Δm) and feed (Δf) phases. According to the results, the values of 1 and 1345 s/cm were found for Δm and Δf, respectively.

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Panja, S., R. Ruhela, A. Das, S. C. Tripathi, A. K. Singh, P. M. Gandhi, and R. C. Hubli. "Carrier mediated transport of Pd(II) from nitric acid medium using Dithiodiglycolamide(DTDGA) across a supported liquid membrane (SLM)." Journal of Membrane Science 449 (January 2014): 67–73. http://dx.doi.org/10.1016/j.memsci.2013.07.045.

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Manna, Mriganka Sekhar, Prabirkumar Saha, and Aloke Kumar Ghoshal. "Separation of medicinal catechins from tea leaves (Camellia sinensis) extract using hollow fiber supported liquid membrane (HF-SLM) module." Journal of Membrane Science 471 (December 2014): 219–26. http://dx.doi.org/10.1016/j.memsci.2014.08.011.

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Sriram, S., and V. K. Manchanda. "TRANSPORT OF METAL IONS ACROSS A SUPPORTED LIQUID MEMBRANE (SLM) USING DIMETHYLDIBUTYL- TETRADECYL-1,3-MALONAMIDE (DMDBTDMA) AS THE CARRIER." Solvent Extraction and Ion Exchange 20, no. 1 (February 13, 2002): 97–114. http://dx.doi.org/10.1081/sei-100108827.

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