Removal of Cr(VI) by a chelating resin containing N-methyl-d-glucamine

Santander, Paola; Rivas, Bernabé L.; Urbano, Bruno F.; Leiton, Lorena; İpek, İdil Yılmaz; Yüksel, Mithat; Kabay, Nalan; Bryjak, Marek

doi:10.1007/s00289-014-1156-8

Cited by 20 publications

(23 citation statements)

References 31 publications

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“…The positive charge allows the Cr(III) transport towards the receiving chamber. The Cr(VI) ions react with the hydroxyl groups of the NMG and they were reduced to Cr(III) [30].…”

Section: Transport Evaluation Of Cr(iii) and Cr(vi) From Mixed Systemmentioning

confidence: 99%

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Ion-selective interpenetrating polymer networks supported inside polypropylene microporous membranes for the removal of chromium ions from aqueous media

2015

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The ion-exchange properties of interpenetrating polymer networks (IPNs) have been studied to provide metal-ion transport with high selectivity. Polypropylene (PP) membranes incorporating poly [(ar-vinylbenzyl) trimethylammonium chloride], P(ClVBTA), poly[2-(acryloyloxy)ethyl]trimethylammonium chloride] P(ClAETA), poly(acrylic acid) P(AA), poly(2-acrylamidoglycolic acid) P(AGA), poly(glycidylmethacrylate-N-methyl-D-glucamine) P(GMA-NMG), poly(2-acrylamido-2-methyl-1-propane sulfonic acid) P(AMPS), and poly[sodium (styrene sulfonate)], P(SSNa) were modified via an ''in situ'' radical-polymerization. The surface of PP was activated by a hydrophilic grafted polyelectrolyte and then pressure injection was used for impregnation of the reactive solution in the membrane. The following conditions were varied: the functional monomer, grafted polyelectrolyte, and cross-linked concentration. The modified PP membranes were characterized using SEM/EDS, FT-IR, electrokinetic potential, and Donnan dialysis for the chromium ion transport. The modified membranes exhibited hydrophilic character with a water-uptake capacity between 15 and 40 % and a percentage of modification between 2.5 and 5.5 % in comparison with the behavior of the unmodified polypropylene membrane as the blank probe. Hexavalent chromium ions were efficiently transported by the modified membranes containing P(ClVBTA) (61.2 %) and only 5.8 % of trivalent chromium were extracted at pH 3.0 using a 1 mol/L NaCl solution as the extraction reagent. Similarly, Cr(III) transport using membranes modified with P(SSNa) achieved 42.1 % extraction at pH 3.0 using 1 mol/L NaCl as the extraction reagent and 2.5 % extraction was achieved for Cr(VI). Unmodified PP membrane shows Cr(VI) extraction percentage between 1.6 and 3.1 %, and Cr(III)extraction percentage between 2.3 and 2.6 %.

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“…The positive charge allows the Cr(III) transport towards the receiving chamber. The Cr(VI) ions react with the hydroxyl groups of the NMG and they were reduced to Cr(III) [30].…”

Section: Transport Evaluation Of Cr(iii) and Cr(vi) From Mixed Systemmentioning

confidence: 99%

“…ions that move in the counter balance. Additionally, in these experiments, the important role of the charge on the membrane was checked because of the charge aids in the mobility of ions [30].…”

Section: Transport Evaluation Of Cr(iii) and Cr(vi) From Mixed Systemmentioning

confidence: 99%

Ion-selective interpenetrating polymer networks supported inside polypropylene microporous membranes for the removal of chromium ions from aqueous media

2015

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“…In another study, the synthetic monomer N ‐(4‐vinylbenzyl)‐ N ‐methyl‐ d ‐glucamine was obtained and further polymerized in the presence of 4 mol% of N , N ‐methylene‐bis‐acrylamide. The resin removed more than 95% of Cr(VI) after only 20 min of contact under a batch procedure, while in the column study the resin showed a very high sorption capacity for Cr(VI) and a very good elution efficiency with an NaOH–H 2 O 2 mixture . In addition, a copolymer resin using the monomers N ‐(4‐vinylbenzyl)‐ N ‐methyl‐ d ‐glucamine and (4‐vinylbenzyl)trimethylammonium chloride was studied to reveal the sorption of arsenic.…”

Section: Water‐insoluble Polymersmentioning

confidence: 99%

“…The resin removed more than 95% of Cr(VI) after only 20 min of contact under a batch procedure, while in the column study the resin showed a very high sorption capacity for Cr(VI) and a very good elution efficiency with an NaOH-H 2 O 2 mixture. 108 In addition, a copolymer resin using the monomers N-(4-vinylbenzyl)-N-methyl-D-glucamine and (4-vinylbenzyl)trimethylammonium chloride was studied to reveal the sorption of arsenic. The equilibrium experiments indicated that the copolymer achieves higher sorption capacity at pH 9.0 and that this capacity is enhanced with an increased temperature.…”

Section: -100mentioning

confidence: 99%

Polymers and nanocomposites: synthesis and metal ion pollutant uptake

Rivas

Sánchez

Urbano

2015

Polymer International

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This paper is an overview of the versatile polymer materials containing different functional groups at the main or side chain to remove hazardous inorganic species. These materials include water-insoluble, nanocomposite and water-soluble polymers. Water-insoluble polymers and nanocomposites are used in adsorption and ion exchange processes, whereas water-soluble polymers are employed with ultrafiltration membranes in the liquid-phase polymer-based retention technique.

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“…Such IPNs are effective ion exchangers used in the removal processes of chromate ions [24]. Alternatively, an IPNs based on poly(glycidyl methacrylate-N-methyl-D-glucamine) (P(GMA-NMG)) has shown efficient chelating properties for the retention of chromium ions [25,26], whereas in the case or Cr(III) removal, the most characteristic ion exchange polymer networks were composed of poly(sodium(styrenesulfonate)) (P(SSNa)) and poly(acrylic acid) (P(AA)) [27,28].…”

Section: Introductionmentioning

confidence: 99%

Activated Polypropylene Membranes With Ion-Exchange Polymers to Transport Chromium Ions in Water

Tapiero¹,

Rivas²,

Sánchez

2019

J. Chil. Chem. Soc.

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Polypropylene (PP) membranes were modified by in situ radical-polymerizations of functional monomers forming networks inside the pores. The main experimental conditions studied include the functional monomer concentration and crosslinking concentration. The modified membranes were characterized by scanning electron microscopy, charge density properties, and Donnan dialysis for chromium ion transport. The experimental data of the transport of Cr(III) and Cr(VI) ions were fitted to mathematical models (a polynomial fit as the first step and then the change in the concentration rates of both phases). The 4-order polynomial equation for the Cr(III) ions and the 7-order polynomial equation for the Cr(VI) ions provide better fits to the data and aid in predicting the chromium concentration values for any time.

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Removal of Cr(VI) by a chelating resin containing N-methyl-d-glucamine

Cited by 20 publications

References 31 publications

Ion-selective interpenetrating polymer networks supported inside polypropylene microporous membranes for the removal of chromium ions from aqueous media

Ion-selective interpenetrating polymer networks supported inside polypropylene microporous membranes for the removal of chromium ions from aqueous media

Polymers and nanocomposites: synthesis and metal ion pollutant uptake

Activated Polypropylene Membranes With Ion-Exchange Polymers to Transport Chromium Ions in Water

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