Supported liquid membrane system for Cr(III) separation from Cr(III)/Cr(VI) mixtures

2014 ◽  
Vol 69 (12) ◽  
pp. 2476-2481 ◽  
Author(s):  
P. Religa ◽  
J. Rajewski ◽  
P. Gierycz ◽  
R. Świetlik
Keyword(s):  
Liquid Membrane ◽  
Membrane System ◽  
Liquid Membranes ◽  
Phase Mixing ◽  
Chromium Vi ◽  
Supported Liquid Membranes ◽  
Carrier Interaction ◽  
Oxidation Properties ◽  
Feed Phase ◽  
Phase Surface

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.

scholarly journals Liquid-Liquid Extraction of Indium(III) from the HCl Medium by Ionic Liquid A327H+Cl− and Its Use in a Supported Liquid Membrane System

Molecules ◽  
2020 ◽  
Vol 25 (22) ◽  
pp. 5238
Author(s):  
Francisco José Alguacil
Keyword(s):  
Ionic Liquid ◽  
Liquid Membrane ◽  
Membrane System ◽  
Liquid Extraction ◽  
Supported Liquid Membrane ◽  
Distribution Data ◽  
Membrane Phase ◽  
Liquid Liquid Extraction ◽  
Feed Phase ◽  
Hcl Medium

Ionic liquid A327H+Cl− was generated by reaction of tertiary amine A327 and HCl, and the liquid-liquid extraction of indium(III) from the HCl medium by this ionic liquid dissolved in Solvesso 100 was investigated. The extraction reaction is exothermic. The numerical analysis of indium distribution data suggests the formation of A327H+InCl4− in the organic phase. The results derived from indium(III) extraction have been implemented in a supported liquid membrane system. The influence of the stirring speed (600–1200 min−1), carrier concentration (2.5–20% v/v) in the membrane phase, and indium concentration (0.01–0.2 g/L) in the feed phase on metal transport have been investigated.

Removal of Phenol from Wastewater by Supported Liquid Membrane Process

2015 ◽  
Vol 74 (7) ◽  
Author(s):  
Norasikin Othman ◽  
Ling Chui Heng ◽  
Norul Fatiha Mohamed Noah ◽  
Ooi Zing Yi ◽  
Norela Jusoh ◽  
...  
Keyword(s):  
Flow Rate ◽  
Palm Oil ◽  
Liquid Membrane ◽  
Aqueous Sodium Hydroxide ◽  
Supported Liquid Membrane ◽  
Liquid Membranes ◽  
Membrane Phase ◽  
Carcinogenic Effect ◽  
Feed Phase

Phenol is considered a pollutant in the environment due to its toxicity and carcinogenic effect. Supported liquid membrane (SLM) is a good and promising technology for the removal of phenol from wastewater because it provides maximum driving force for the separation of targeted solute and simultaneous extraction and stripping process which lead to excellent separation. In this research, kerosene and palm oil liquid membranes were used as liquid membrane phase, aqueous phenol as the feed phase and aqueous sodium hydroxide as the stripping phase. Several factors such as feed phase pH, feed phase flow rate and concentration of stripping phase were studied.  The results show that the best extraction performance can achieve 35% at pH 4 of feed phase, 150 ml/min feed flow rate and 1.0 M of stripping phase concentration. The result was used to determine the probability of using palm oil as a liquid membrane. In the determination of the potential of using palm oil as the membrane phase, the results show that an equal portion of palm oil and kerosene mixture performed the best extraction with 43% efficiency.

Removal and recovery of heavy metals from wastewaters by supported liquid membranes

2001 ◽  
Vol 43 (2) ◽  
pp. 341-348 ◽  
Author(s):  
X. J. Yang ◽  
A. G. Fane ◽  
S. MacNaughton
Keyword(s):  
Heavy Metals ◽  
Liquid Membrane ◽  
Chemical Precipitation ◽  
Precipitation Process ◽  
Liquid Membranes ◽  
Supported Liquid Membranes ◽  
In Series ◽  
Membrane Carriers ◽  
Very High ◽  
Removal And Recovery

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.

An overview on nanostructure-modified supported liquid membranes for the electromembrane extraction method

2022 ◽  
Author(s):  
Mir Saleh Hoseininezhad-Namin ◽  
Elaheh Rahimpour ◽  
Sibel Aysil Ozkan ◽  
Abolghasem Jouyban
Keyword(s):  
Extraction Method ◽  
Liquid Membrane ◽  
Supported Liquid Membrane ◽  
Liquid Membranes ◽  
Supported Liquid Membranes ◽  
Electromembrane Extraction

The efficiency of electromembrane extraction can be improved by modification of supported liquid membrane with various nanomaterials.

scholarly journals Facilitated Chromium(VI) Transport across an Ionic Liquid Membrane Impregnated with Cyphos IL102

Molecules ◽  
2019 ◽  
Vol 24 (13) ◽  
pp. 2437 ◽  
Author(s):  
Francisco Jose Alguacil
Keyword(s):  
Ionic Liquid ◽  
Liquid Membrane ◽  
Present System ◽  
Liquid Membranes ◽  
Green Solvents ◽  
Chromium Vi ◽  
Aqueous Streams ◽  
Hazardous Element ◽  
General Concern ◽  
Key Parameter

Chromium(VI) is a well-known hazardous element, thus, its removal from aqueous sources is of a general concern. Among the technologies used for the removal of this type of toxic elements, liquid membranes are gaining in importance and the same has occurred with the use of ionic liquids, considered for many, due to their properties, as green solvents. Thus, the present work joined the three previous points, presenting an experimental study about the removal of chromium(VI) by the use of a liquid membrane operation which used the commercially available Cyphos IL102 ionic liquid as a carrier. The experimental variables included: the stirring speed applied to the feed and receiving solution (a key-parameter to gain maximum transport), acid, chromium(VI), sodium hydroxide and Cyphos IL102 concentrations in their various phases. Additionally, the performance of the present system was evaluated both against the presence of other metals in solution and other carriers. The experimental results confirmed that Cyphos IL102 is a good carrier for chromium(VI) transport and, thus, its removal from aqueous streams, and it also performed well in the presence of accompanying metals and against the performance of other commercially available carriers.

scholarly journals Pertraction of Co(II) through Novel Ultrasound Prepared Supported Liquid Membranes Containing D2EHPA. Optimization and Transport Parameters

Membranes ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 436
Author(s):  
Gerardo León ◽  
Asunción María Hidalgo ◽  
Beatriz Miguel ◽  
María Amelia Guzmán
Keyword(s):  
Boundary Layer ◽  
Sulfuric Acid ◽  
Carrier Concentration ◽  
Liquid Membrane ◽  
Supported Liquid Membrane ◽  
Liquid Membranes ◽  
Membrane Phase ◽  
Experimental Conditions ◽  
Supported Liquid Membranes ◽  
Aqueous Feed

Pertraction of Co(II) through novel supported liquid membranes prepared by ultrasound, using bis-2-ethylhexyl phosphoric acid as carrier, sulfuric acid as stripping agent and a counter-transport mechanism, is studied in this paper. Supported liquid membrane characterization through scanning electron microscopy, energy-dispersive X-ray spectroscopy and Fourier transform infrared spectroscopy shows the impregnation of the microporous polymer support by the membrane phase by the action of ultrasound. The effect on the initial flux of Co(II) of different experimental conditions is analyzed to optimize the transport process. At these optimal experimental conditions (feed phase pH 6, 0.5 M sulfuric acid in product phase, carrier concentration 0.65 M in membrane phase and stirring speed of 300 rpm in both phases) supported liquid membrane shows great stability. From the relation between the inverse of Co(II) initial permeability and the inverse of the square of carrier concentration in the membrane phase, in the optimized experimental conditions, the transport resistance due to diffusion through both the aqueous feed boundary layer (3.7576 × 104 s·m−1) and the membrane phase (1.1434 × 1010 s·m−1), the thickness of the aqueous feed boundary layer (4.0206 × 10−6 m) and the diffusion coefficient of the Co(II)-carrier in the bulk membrane (4.0490 × 10−14 m2·s−1), have been determined.

Partition-Diffusion Model for Enantioseparation of Phenylalanine Using Hollow Fiber SLM

2012 ◽  
Vol 485 ◽  
pp. 44-47
Author(s):  
Du Shu Huang ◽  
Yong Min ◽  
Li Hua Yao ◽  
Jin Yang ◽  
Ya Shun Chen ◽  
...  
Keyword(s):  
Boundary Layer ◽  
Diffusion Model ◽  
Hollow Fiber ◽  
Hollow Fibers ◽  
Liquid Membranes ◽  
Membrane Phase ◽  
Transfer Resistance ◽  
Supported Liquid Membranes ◽  
Feed Phase ◽  
Model Equations

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.

Study on Transportation of Cu(II) by Dispersion Supported Liquid Membrane System

2012 ◽  
Vol 549 ◽  
pp. 795-799
Author(s):  
Xiao Ning Wu ◽  
Bing Hua Yao
Keyword(s):  
Polyvinylidene Fluoride ◽  
Liquid Membrane ◽  
Ph Value ◽  
Copper Ion ◽  
Volume Ratio ◽  
Membrane System ◽  
Supported Liquid Membrane ◽  
Initial Concentration ◽  
Effects Of Ph ◽  
Feed Phase

The transportation and separation of Cu(Ⅱ) through a dispersion supported liquid membrane(DSLM) consisting of 2-ethylhexyl Phosphonic Mono-(2-Ethylhexyl) in kerosene, supported on the polyvinylidene fluoride membrane(PVDF), is studied. The effects of pH value in the feed phase, volume ratio of liquid membrane phase and hydrochloric acid, concentrations of HCl in the strip phase and initial concentration of Cu(Ⅱ) in the feed phase are also researched. The results show that copper ion can be transported effectively when pH =5.25 in the feed phase, the volume ratio is160:40, concentrations of HCl in the strip phase is 4.0mol/L. Under the optimum transport conditions, when initial concentration of Cu(Ⅱ) was 2.00×10-4mol/L, the transport rate of Cu(Ⅱ)was up to 94.7% in 130 min.

Sign in / Sign up

Export Citation Format

Share Document