scholarly journals A Polymer Inclusion Membrane for Sensing Metal Complexation in Natural Waters

2021 ◽  
Vol 11 (21) ◽  
pp. 10404
Author(s):  
Berta Alcalde ◽  
Enriqueta Anticó ◽  
Clàudia Fontàs
Keyword(s):  
Natural Waters ◽  
Ethylenediaminetetraacetic Acid ◽  
Major Ions ◽  
Metal Speciation ◽  
Cellulose Triacetate ◽  
Metal Complexation ◽  
Metallic Ions ◽  
Inclusion Membrane ◽  
Polymer Inclusion Membrane ◽  
Free Metal

Metal speciation studies are of great importance in assessing metal bioavailability in aquatic environments. Functionalized membranes are a simple tool to perform metal chemical speciation. In this study, we have prepared and tested a polymer inclusion membrane (PIM) made of the polymer cellulose triacetate (CTA), the extractant di-(2-ethylhexyl) phosphoric acid (D2EHPA), and the plasticizer 2-nitrophenyloctyl ether (NPOE) as a sensor for Zn and Cu complexation studies. This PIM, incorporated in a device with an 0.01 M HNO3 receiving solution, is shown to effectively transport free metal ions, and it is demonstrated that the presence of ligands that form stable complexes with divalent metallic ions, such as ethylenediaminetetraacetic acid (EDTA) and humic acid (HA), greatly influences the accumulation of the metals in the receiving phase due to the increasing metal fraction complexed in the feed phase. Moreover, the effect of major ions found in natural waters has been investigated, and it is found that the presence of calcium did not decrease the accumulation of either Zn or Cu. Finally, the PIM sensor has been used successfully to evaluate metal complexation in a river water affected by Zn pollution.

scholarly journals Facilitated Transport of Copper(II) across Polymer Inclusion Membrane with Triazole Derivatives as Carrier

Membranes ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 201
Author(s):  
Bernadeta Gajda ◽  
Radosław Plackowski ◽  
Andrzej Skrzypczak ◽  
Mariusz B. Bogacki
Keyword(s):  
Ion Transport ◽  
Flow Rate ◽  
Alkyl Substituent ◽  
Cellulose Triacetate ◽  
Carbon Chain ◽  
Inclusion Membrane ◽  
Polymer Inclusion Membrane ◽  
Demineralized Water ◽  
Nitrophenyl Octyl Ether ◽  
Membrane Changes

This study investigates copper(II) ion transport through a polymer inclusion membrane (PIM) containing 1-alkyl-1,2,4-triazole (n = 8, 9, 10, 11, 12, 14), o-nitrophenyl octyl ether as the plasticizer and cellulose triacetate as the polymer matrix. The feeding phase was a solution of 0.1 mol/dm3CuCl2 and an equimolar (0.1 mol/dm3) mixture of copper, nickel, and cobalt chlorides with varying concentrations of chloride anions (from 0.5 to 5.0 mol/dm3) established with NaCl. The receiving phase was demineralized water. The flow rate of the source and receiving phases through the membrane module was within the range from 0.5 cm3/min to 4.5 cm3/min. The tests were carried out at temperatures of 20, 30, 40 and 50 °C. Transport of NaCl through the membrane was excluded for the duration of the test. It was noted that the flow rate through the membrane changes depending on the length of the carbon chain in the alkyl substituent from 16.1 μmol/(m2s) to 1.59 μmol/(m2s) in the following order: C8> C9> C10> C11> C12> C14. The activation energy was 71.3 ± 3.0 kJ/mol, indicating ion transport through the PIM controlled with a chemical reaction. Results for transport in case of the concurrent separation of copper(II), nickel(II), and cobalt(II) indicate a possibility to separate them in a selective manner.

scholarly journals Application of Plasticized Cellulose Triacetate Membranes for Recovery and Separation of Cerium(III) and Lanthanum(III)

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Beata Pospiech ◽  
Adam Makowka
Keyword(s):  
Metal Ions ◽  
Phosphinic Acid ◽  
Cellulose Triacetate ◽  
Inclusion Membrane ◽  
Polymer Inclusion Membrane ◽  
Cyanex 272 ◽  
Dithiophosphinic Acid ◽  
Cyanex 301 ◽  
Source Phase

Abstract This work explains the application of plasticized cellulose triacetate (CTA) membranes with Cyanex 272 di(2,4,4-(trimethylpentyl)phosphinic acid) and Cyanex 301 (di(2,4,4-trimethylpentyl)dithiophosphinic acid) as the ion carriers of lanthanum(III) and cerium(III). CTA is used as a support for the preparation of polymer inclusion membrane (PIM). This membrane separates the aqueous source phase containing metal ions and the receiving phase. 1M H2SO4 is applied as the receiving phase in this process. The separation properties of the plasticized membranes with Cyanex 272 and Cyanex 301 are compared. The results show that the transport of cerium(III) through PIM with Cyanex 272 is more efficient and selective than lanthanum(III).

scholarly journals Selective recovery of cobalt(II) towards lithium(I) from chloride media by transport across polymer inclusion membrane with triisooctylamine

2014 ◽  
Vol 16 (1) ◽  
pp. 15-20 ◽  
Author(s):  
Beata Pospiech
Keyword(s):  
Cellulose Triacetate ◽  
Deionized Water ◽  
Inclusion Membrane ◽  
Chloride Solutions ◽  
Selective Recovery ◽  
Polymer Inclusion Membrane ◽  
Selective Transport ◽  
Nitrophenyl Octyl Ether ◽  
Aqueous Chloride ◽  
Source Phase

Abstract In this work the selective transport of cobalt(II) and lithium(I) ions from aqueous chloride solutions through polymer inclusion membranes (PIMs) is presented. Triisooctylamine (TIOA) has been applied as the ion carrier in membrane. The effects of various parameters on the transport of Co(II) and Li(I) were studied. The obtained results show that Co(II) ions were effectively removed from source phase through PIM containing 32 wt.% TIOA, 22 wt.% CTA (cellulose triacetate) and 46 wt.% ONPOE (o-nitrophenyl octyl ether) or ONPPE (o-nitrophenyl pentyl ether) into deionized water as the receiving phase. The results indicate that there is a possibility of polymer inclusion membranes application to recover Co(II) and Li(I) from aqueous chloride solutions

Preparation and characterization of cellulose triacetate polymer inclusion membrane blended with acetylated kraft lignin: effect of AKL

2018 ◽  
Vol 104 ◽  
pp. 263-272 ◽  
Author(s):  
Sana Ncib ◽  
Afef Barhoumi ◽  
Wided Bouguerra ◽  
Christian Larchet ◽  
Lasâad Dammak ◽  
...  
Keyword(s):  
Cellulose Triacetate ◽  
Kraft Lignin ◽  
Inclusion Membrane ◽  
Polymer Inclusion Membrane

A polymer inclusion membrane for the simultaneous determination of Cu(II), Ni(II) and Cd(II) ions from natural waters

2020 ◽  
Vol 157 ◽  
pp. 104980 ◽  
Author(s):  
M.M. López-Guerrero ◽  
M.D. Granado-Castro ◽  
M. Díaz-de-Alba ◽  
J. Lande-Durán ◽  
M.J. Casanueva-Marenco
Keyword(s):  
Simultaneous Determination ◽  
Natural Waters ◽  
Inclusion Membrane ◽  
Polymer Inclusion Membrane

scholarly journals Imprinted Polymer Inclusion Membrane Based Potentiometric Sensor for Determination and Quantification of Diethyl Chlorophosphate in Natural Waters

2011 ◽  
Vol 02 (03) ◽  
pp. 376-382 ◽  
Author(s):  
Varada Vishnuvardhan ◽  
Yakkala Kalyan ◽  
Krishnapillai Padmajakumari Prathish ◽  
Battala Gangadhar ◽  
Yadamari Tharakeswar ◽  
...  
Keyword(s):  
Natural Waters ◽  
Potentiometric Sensor ◽  
Imprinted Polymer ◽  
Inclusion Membrane ◽  
Polymer Inclusion Membrane
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