Equilibrium studies for the interaction of aqueous metal ions and polyacrylic acid by a batch ultrafiltration method

Juang, Ruey‐Shin; Liang, Ji-Feng

doi:10.1016/0376-7388(93)85102-3

Cited by 67 publications

(28 citation statements)

References 11 publications

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“…The pH value is a very important factor in most cases of polymeric binding because either protons or hydroxyl anions can compete with the component to be bound to the polymer. 7,12,13,21 A set of experiments were carried out to investigate the effect of pH on the rejection. Selected pH values were 2.0 and 3.1 (Fig.…”

Section: Resultsmentioning

confidence: 99%

Removal of Fe(III) ions from dilute aqueous solutions by alginic acid‐enhanced ultrafiltration

Sanli¹,

Asman²

2000

J. Appl. Polym. Sci.

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The removal of Fe(III) ions from aqueous solutions was studied using membrane filtration. A water-soluble polymer alginic acid (AA) was used to bind the metal ions, which was followed by batch ultrafiltration using poly(methyl methacrylatemethacrylic acid) membranes modified with poly(ethylene glycol) (PMMA-MA-PEG). The complexation behavior of AA and the effect pH on the rejection of iron were investigated. Maximum recovery of 87.13% was obtained when the filtration was carried out in the presence of AA at pH 3.1.

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Section: Resultsmentioning

confidence: 99%

Removal of Fe(III) ions from dilute aqueous solutions by alginic acid‐enhanced ultrafiltration

Sanli¹,

Asman²

2000

J. Appl. Polym. Sci.

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“…The pH value is a very important factor in most cases of polymeric binding because either protons or hydroxyl anions can compete with the component to be bound to the polymer 7, 12, 13, 21…”

Section: Resultsmentioning

confidence: 99%

Removal of Fe(III) ions from dilute aqueous solutions by alginic acid-enhanced ultrafiltration

Şanlı¹,

Asman²

2000

J. Appl. Polym. Sci.

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The removal of Fe(III) ions from aqueous solutions was studied using membrane filtration. A water‐soluble polymer alginic acid (AA) was used to bind the metal ions, which was followed by batch ultrafiltration using poly(methyl methacrylate‐methacrylic acid) membranes modified with poly(ethylene glycol) (PMMA‐MA‐PEG). The complexation behavior of AA and the effect pH on the rejection of iron were investigated. Maximum recovery of 87.13% was obtained when the filtration was carried out in the presence of AA at pH 3.1. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 77: 1096–1101, 2000

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“…In addition, it is generally considered that the complex formation proceeds in a single step by the complexation-ultrafiltration process users [23,24], even if the literature has also reported studies taking into account the stepwise complex formation model [20]. Thus, only the equilibrium reaction and the corresponding stability constant reported in the equation (5) have been considered below.…”

Section: Ii3 Selective Removal Of Metal Ions By the Complexation-ulmentioning

confidence: 99%

“…To state mass-balance relations that are really able to describe accurately the studied system, and in order to simplify the calculation, the users of the complexation-ultrafiltration hybrid process considered many assumptions. A concise recapitulation of the most generally assumptions that are made is given below [20,23,24]:…”

Section: Ii3 Selective Removal Of Metal Ions By the Complexation-ulmentioning

confidence: 99%

“…Several theoretical models were developed to study the rejection by ultrafiltration of beforehand complexed metal ions [17,20,[22][23][24][25][26][27]. These models permit the evaluation or the prediction of the effectiveness of the separation process; and some of these models even permit the determination of parameters suitable for the formed macrocomplexe, namely the chemical equilibrium constants and the coordination number [25,28,29].…”

Section: Ii1 Introductionmentioning

confidence: 99%

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Removal of Metal Ions from Aqueous Solutions by Complexation –Ultrafiltration Hybrid Process: A Bibliographical Overview

Mimoune¹,

Belazzougui²,

Benaboura³

2014

J. Memb. Separ. Tech.

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Water pollution by metal ions contaminants is a worldwide alarming problem. Clean and safe water is becoming in the same time an increasing scare resource. Thus, to keep this fundamental resource available and suitable for use, water treatment methods are investigated by means of numerous research studies since the purification of water and its re-use and, in a larger scale, the environmental protection will be essential henceforth in any strategy of development. Membrane processes, in general, and ultrafiltration, in particular, develop, without stopping, since the beginning of the sixties to meet the vital need for environmental safety which justifies the policies of durable development adopted today all over the world. Thanks to its growing, ultrafiltration becomes an irreplaceable weapon in the control of pollution. It is classified as a soft and clean technology since it needs low energy consumption and ensures a notable reduction in pollution production during the treatment step. Ultrafiltration is a pressure driven membrane process with the ability to separate molecules in solution on the basis of size. A microporous ultfafiltration membrane retains species with molecular weight higher than its cut off, while small molecules as solvents and microsolutes can pass freely through it. Thus, metal ions aren't rejected by ultrafiters. However, ultrafiltration can be used to remove metal ions from aqueous solutions by coupling the process with complexation. Indeed, the complexation of metal ions using water soluble polymers as substrates is able to expand artificially the size of the metallic species so as to make possible their rejection by the microporous ultrafilters. The complexation-ultrafiltration hybrid process was first suggested at the end of the sixties by A. S. Michaels. Since then, many studies have shown its effectiveness in the treatment of aqueous solutions containing metal ions. This paper gives an overview of academic studies that illustrate and demonstrate the efficiency and the promising of the hybrid process in the purification of water from metal ions contaminants beforehand sequestered by adequate watersoluble macromolecular substrates.

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Equilibrium studies for the interaction of aqueous metal ions and polyacrylic acid by a batch ultrafiltration method

Cited by 67 publications

References 11 publications

Removal of Fe(III) ions from dilute aqueous solutions by alginic acid‐enhanced ultrafiltration

Removal of Fe(III) ions from dilute aqueous solutions by alginic acid‐enhanced ultrafiltration

Removal of Fe(III) ions from dilute aqueous solutions by alginic acid-enhanced ultrafiltration

Removal of Metal Ions from Aqueous Solutions by Complexation –Ultrafiltration Hybrid Process: A Bibliographical Overview

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