Synthesis of new water-soluble metal-binding polymers: Combinatorial chemistry approach. 1997 mid-year progress report

Means are developed to improve the metal ion delivery/remediation potential of polyacrylamides (PAMs), by incorporation of the co-monomer N-acryloyl-4-aminosalicylic acid. The polymers were synthesized by solution and inverse emulsion polymerization. The chemical binding of two soil micronutrients, Cu2+ and Fe3+, were investigated using atomic absorption spectroscopy. The modified PAM had an enhanced affinity for metal ions compared with conventional PAMs. This modified PAM has the potential as a delivery tool of plant micronutrients and stabilizers for agricultural soils undergoing intense irrigation. The same polymers may also provide a detoxifying effect in these applications where some micronutrient sources may be in excess and detrimental to productive agriculture.

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Preconcentration of low levels of americium and plutonium from waste waters by synthetic water-soluble metal-binding polymers with ultrafiltration

Journal of Radioanalytical and Nuclear Chemistry ◽

10.1007/bf02389776 ◽

1998 ◽

Vol 234 (1-2) ◽

pp. 225-229 ◽

Cited By ~ 17

Author(s):

B. F. Smith ◽

R. R. Gibson ◽

G. D. Jarvinen ◽

T. W. Robison ◽

N. C. Schroeder ◽

...

Keyword(s):

Metal Binding ◽

Water Soluble ◽

Waste Waters ◽

Low Levels ◽

Synthetic Water

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Galvanic Wastewater Treatment by Means of Anionic Polymer Enhanced Ultrafiltration

Ecological Chemistry and Engineering S ◽

10.2478/v10216-011-0002-2 ◽

2012 ◽

Vol 19 (1) ◽

pp. 19-27 ◽

Cited By ~ 1

Author(s):

Irena Korus

Keyword(s):

Wastewater Treatment ◽

Metal Binding ◽

Metal Ion ◽

Water Soluble ◽

Partial Recovery ◽

Solution Ph ◽

Anionic Polymer ◽

Metal Retention ◽

Metal Separation ◽

Polymer Metal

Galvanic Wastewater Treatment by Means of Anionic Polymer Enhanced Ultrafiltration This work is focused on polyelectrolyte enhanced ultrafiltration as an effective heavy metal separation technique. Three types of effluents, containing Zn(II), Cu(II) and Ni(II) ions, were subjected to the separation process. Poly(sodium 4-styrenesulfonate) - PSSS, a water soluble anionic polyelectrolyte was used as a metal binding agent. Two Sepa® CF (Osmonics) membranes: EW, made of polysulfone and a modified polyacrylonitrile membrane MW, were used in the ultrafiltration process. The preliminary UF tests were carried out on model solutions with target metal ion concentrations of 10, 100 and 250 mg dm-3. The main parameters affecting the metal retention (the polyelectrolyte quantity and solution pH) were examined. The values of pH 6 and polymer : metal concentration ratio CPSSS : CM = 7.5 : 1 (mol of mer unit per mol of metal) were selected to perform the galvanic wastewater ultrafiltration-concentration tests. Three types of wastewater containing Zn(II), Ni(II) and Cu(II) ions within the concentration range of 30÷70 mg dm-3 were used in the investigations. Very high metal retention coefficients, up to > 99%, were achieved. The retentates obtained were subjected to the decomplexation-ultrafiltration (pH = 1) and subsequent diafiltration step, which enabled partial recovery of concentrated metal ions and the polyelectrolyte. The recovered polyelectrolyte was reused toward Ni(II) ions and the high effectiveness of metal separation has been achieved.

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