The removal of copper (II) and nickel (II) from dilute aqueous solution by a synthetic flocculant: a polarographic study of the complexation with a high molecular weight poly(acrylic acid) for different pH values

2000 ◽  
Vol 34 (2) ◽  
pp. 455-462 ◽  
Author(s):  
C Morlay
Keyword(s):  
Aqueous Solution ◽  
Molecular Weight ◽  
Acrylic Acid ◽  
High Molecular Weight ◽  
Polarographic Study ◽  
Ph Values ◽  
Dilute Aqueous Solution ◽  
High Molecular Weight Poly ◽  
Poly Acrylic Acid

Determination of the complexation properties of a crosslinked poly(acrylic acid) gel with copper(II), nickel(II), and lead(II) in dilute aqueous solution

2001 ◽  
Vol 79 (4) ◽  
pp. 370-376 ◽  
Author(s):  
Catherine Morlay ◽  
Yolande Mouginot ◽  
Monique Cromer ◽  
Olivier Vittori
Keyword(s):  
Aqueous Solution ◽  
Ionic Strength ◽  
Acrylic Acid ◽  
Metal Ion ◽  
Conditional Stability ◽  
Binding Properties ◽  
Complex Species ◽  
Complexing Capacity ◽  
Dilute Aqueous Solution ◽  
Poly Acrylic Acid

The possible removal of copper(II), nickel(II), or lead(II) by an insoluble crosslinked poly(acrylic acid) was investigated in dilute aqueous solution. The binding properties of the polymer were examined at pH = 6.0 or 4.0 with an ionic strength of the medium µ = 0.1 or 1.0 M (NaNO3) using differential pulse polarography as an investigation means. The highest complexing capacity of the polyacid was obtained with lead(II) at pH = 6.0 with µ = 0.1 M, 4.8 mmol Pb(II)/g polymer. The conditional stability constants of the complex species formed were determined using the method proposed by Ruzic assuming that only the 1:1 complex species was formed; for lead(II) at pH = 6.0 and µ = 0.1 M, log K' = 5.3 ± 0.2. It appeared that the binding properties of the polymer increased, depending on the metal ion, in the following order: Ni(II) < Cu(II) < Pb(II). The complexing capacity and log K' values decreased with the pH or with an increase of the ionic strength. These results were in agreement with the conclusions of our previous studies of the hydrosoluble linear analogues. Finally, with the insoluble polymer, the log K' values were comparable to those previously obtained with the linear analogue whereas the complexing capacity values expressed in mmol g-1 were slightly lower.Key words: insoluble crosslinked poly(acrylic acid), copper(II), nickel(II), and lead(II) complexation.

scholarly journals Effects Of Environmental Factors On The Dispersion Behavior Of Iron Oxide In Aqueous Solutions With Poly Acrylic Acid

2015 ◽  
Vol 60 (2) ◽  
pp. 1561-1564
Author(s):  
E.-H. Lee ◽  
K.-M. Kim ◽  
W.-Y. Maeng ◽  
D.-H. Hur
Keyword(s):  
Molecular Weight ◽  
Acrylic Acid ◽  
High Molecular Weight ◽  
Low Molecular Weight ◽  
Solution Ph ◽  
Molecular Weights ◽  
Aqueous Suspensions ◽  
Magnetite Particles ◽  
The Stability ◽  
Poly Acrylic Acid

Abstract After preparing aqueous suspensions from magnetite particles with a poly-acrylic acid, we investigated the effects of several experimental parameters. We characterized the stability of the suspensions using visual inspection, sedimentation, adsorption, and thermal stability of the dispersant. The dispersion stability is affected by the solution pH, the concentrations of magnetite particles, the molecular weight, the concentration of the dispersants, and the temperature. The stability of the suspensions increased as the concentration of the dispersant and the temperature increased. In terms of the molecular weights of the dispersant, the suspensions with dispersant of low-molecular weight (1800) were more stable than those of high-molecular weight (250000) at room temperature. However, at high temperature the suspensions with high-molecular weight showed stability. The adsorption efficiency of the dispersant was very low. The dispersant of high-molecular weight showed a higher thermal integrity than that of low-molecular weight. From this work, we obtained the optimum conditions for stable aqueous suspensions of magnetite particles.

scholarly journals Degradation of ultra-high molecular weight poly(methyl methacrylate-co-butyl acrylate-co-acrylic acid) under ultra violet irradiation

RSC Advances ◽  
2017 ◽  
Vol 7 (1) ◽  
pp. 112-120 ◽  
Author(s):  
R. Shanti ◽  
A. N. Hadi ◽  
Y. S. Salim ◽  
S. Y. Chee ◽  
S. Ramesh ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Acrylic Acid ◽  
Methyl Methacrylate ◽  
High Molecular Weight ◽  
Butyl Acrylate ◽  
Ultra Violet ◽  
Seeded Emulsion Polymerization ◽  
Poly Methyl Methacrylate ◽  
Ultra High Molecular Weight ◽  
High Molecular Weight Poly

A new acrylic terpolymer, poly(methyl methacrylate-co-butyl acrylate-co-acrylic acid) [P(MMA-co-BA-co-AA)] of ultra-high molecular weight (UHMW) was synthesizedviaseeded emulsion polymerization.

The Structure and Aggregation of Hydrogen-Bonded Interpolymer Complexes of Poly(acrylic acid) With Poly(N-vinylpyrrolidone) in Dilute Aqueous Solution

2011 ◽  
Vol 212 (23) ◽  
pp. 2529-2540 ◽  
Author(s):  
Artur Henke ◽  
Sławomir Kadłubowski ◽  
Marian Wolszczak ◽  
Piotr Ulański ◽  
Volodymyr Boyko ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Acrylic Acid ◽  
Interpolymer Complexes ◽  
Dilute Aqueous Solution ◽  
Poly Acrylic Acid ◽  
Hydrogen Bonded

Phase behavior of temperature‐ and pH‐sensitive poly(acrylic acid‐g‐N‐isopropylacrylamide) in dilute aqueous solution

2008 ◽  
Vol 109 (6) ◽  
pp. 4036-4042 ◽  
Author(s):  
Shouxin Liu ◽  
Xia Liu ◽  
Fang Li ◽  
Yu Fang ◽  
Yijuan Wang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Acrylic Acid ◽  
Phase Behavior ◽  
Ph Sensitive ◽  
Dilute Aqueous Solution ◽  
Poly Acrylic Acid

Potentiometric study of cadmium(II) and lead(II) complexation by a cross-linked poly(acrylic acid). Comparison with the linear analogue

2000 ◽  
Vol 78 (12) ◽  
pp. 1637-1641 ◽  
Author(s):  
Catherine Morlay ◽  
Yolande Mouginot ◽  
Monique Cromer ◽  
Michelle Chatelut ◽  
Olivier Vittori
Keyword(s):  
Aqueous Solution ◽  
Acrylic Acid ◽  
Complex Species ◽  
Potentiometric Study ◽  
Predominant Species ◽  
Dilute Aqueous Solution ◽  
Complexing Properties ◽  
The Stability ◽  
Acid Comparison ◽  
Poly Acrylic Acid

Cadmium(II) or lead(II) complex formation with an insoluble cross-linked poly(acrylic acid) was investigated in dilute aqueous solution (NaNO3 0.1 M, 25°C). Potentiometric titrations were carried out to determine the stability constants of the MA and MA2 complex species formed. The Bjerrum's method, modified by Gregor et al. (1955), for the study of polymeric acids was used. The results obtained showed that lead(II) was more readily bound to the polymer. PbA2 was the predominant species; the global stability constant log B102 was equal to 7.4. With cadmium(II), none of the complex species MA or MA2 was predominant (log B102 = 6.0). Finally, the comparison of these results with those of our previous studies showed that the insoluble cross-linked poly(acrylic acid) and its hydrosoluble linear analogues present similar complexing properties towards cadmium(II), lead(II), copper(II), and nickel(II).Key words: insoluble cross-linked poly(acrylic acid), cadmium(II), lead(II), complexation, potentiometry.

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