Removal of Cationic Dyes from Aqueous Solution by Hydrophobically Modified Poly(acrylic Acid) Hydrogels

Li, Shengfang; Yan, Shilin; Yu, Jianying

doi:10.1080/03602559.2010.551444

Cited by 20 publications

(6 citation statements)

References 26 publications

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“…It has been estimated that about 10–15% of these dyes are lost during the dyeing process and released with the effluent 1, 2. Synthetic dyes usually have a complex aromatic molecular structure and exhibit considerable structural diversity 3, 4. The extensive use of dyes usually causes serious pollution problems because of their toxicity.…”

Section: Introductionmentioning

confidence: 99%

“…The extensive use of dyes usually causes serious pollution problems because of their toxicity. Conventional methods for dye removal from waste‐waters include coagulation and flocculation, oxidation or ozonation, membrane separation, and adsorption 4–6. Among these, adsorption is very useful and important for treating or even purifying waste‐waters 7–9.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, adsorption is a simple technique, cheap, often highly scalable, not labour intensive and the adsorbed dye molecules can be desorbed with an appropriate eluent 10, 11. Acrylic based adsorbents are almost ideal for the removal of textile dyes as they are very stable from pH 1.0 to 11.0 and are resistant to microbial degradation and several chemicals 2–4, 8. In addition, magnetic separation using magnetic polymeric particles, is a quick and easy method for the reliable capture of inorganic or organic pollutants and is amenable to automation and miniaturization 11–13.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and characterization of magnetic beads containing aminated fibrous surfaces for removal of Reactive Green 19 dye: kinetics and thermodynamic parameters

Bayramoğlu

Altıntaş

Arıca

2012

J of Chemical Tech & Biotech

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BACKGROUND: Poly(HEMA-co-MMA) beads were prepared from 2-hydroxyethyl-methacrylate (HEMA) and methylmethacrylate (MMA) in the presence of FeCl 3 . Thermal co-precipitation of Fe(III) ions containing beads with Fe(II) ions was carried out under alkaline conditions. The magnetic beads were grafted with poly(glycidylmethacrylate; p(GMA)), and the epoxy groups of the grafted p(GMA) brushes were converted into amino groups by reaction with ammonia.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synthesis and characterization of magnetic beads containing aminated fibrous surfaces for removal of Reactive Green 19 dye: kinetics and thermodynamic parameters

Bayramoğlu

Altıntaş

Arıca

2012

J of Chemical Tech & Biotech

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“…The ability of polymeric materials used in solid-phase extraction to remove organic contaminants from water and air atmosphere enjoys an ongoing interest [1][2][3][4][5][6][7][8][9][10][11][12] . In addition, the use of renewable resources to produce polymeric materials constituted an important step in order to obtain friendly environmental products.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Linear and Cross-Linked Cyclodextrin Polyurethane Elastomers

Oprea¹,

Potolinca²

2013

Polymer-Plastics Technology and Engineering

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Cyclodextrin-based polyurethane elastomers were synthesized to obtain network matrices with good mechanical properties apt for being used as films with scavenging properties. A series of polyurethane elastomers were obtained by chain extension of polyurethane prepolymer with cyclodextrin and butane diol or with the addition of glycerin or castor oil. Toluene, menthone and linalool were introduced as air or water contaminants. The thermal, mechanical and wetting properties of the crosslinked polyurethane films were evaluated. The improved scavenging properties, studied by static headspace chromatography were associated with polyurethane films synthesized with butane diol/cyclodextrin and castor oil/ cyclodextrin blends as chain extenders.

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“…The SAPs contain ionic repeat units, and could classified be as anionic, cationic, amphoteric, or zwitterionic [2] . They find applications in personal hygiene products [2] , food packaging [2] , wound healing devices [3] and water treatment [4] . Although, most of the SAPs commercially produced are anionic (based on acrylic acid and its derivatives) [2] , a wide variety of other superabsorbent polymers have been synthesized [5][6][7][8][9] .…”

mentioning

confidence: 99%

Photo and Thermal Degradation of a Cationic Superabsorbent Polymer

Shukla

Bhagat

Madras

2013

Polymer-Plastics Technology and Engineering

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A cationic superabsorbent polymer (SAP) was synthesized by carrying out the polymerization of [2-(methacryloyloxy)ethyl] trimethyl ammonium chloride) with N,N 0 -methylenebisacrylamide as the cross-linking agent. The SAP was subjected to degradation in dry and the equilibrium swollen state by thermo gravimetric analysis and exposure to ultraviolet radiation, respectively. The photodegradation was monitored by measuring changes in the swelling capacity and the dry weight of the SAP. The thermal degradation of the SAP occurred in three stages after the initial removal of moisture and the activation energies of the decomposition were determined. INTRODUCTIONThree-dimensional cross-linked networks of hydrophilic polymers that are able to absorb and retain liquids more than 100 times of their own weight are known as superabsorbent polymers (SAPs) [1] . The SAPs contain ionic repeat units, and could classified be as anionic, cationic, amphoteric, or zwitterionic [2] . They find applications in personal hygiene products [2] , food packaging [2] , wound healing devices [3] and water treatment [4] . Although, most of the SAPs commercially produced are anionic (based on acrylic acid and its derivatives) [2] , a wide variety of other superabsorbent polymers have been synthesized [5][6][7][8][9] . The cationic monomers have also been polymerized, either independently [10] or with anionic SAPs to obtain amphoteric SAPs [11][12][13][14][15] .The synthesis routes of the monomer-based SAPs are well established, but there are only a few studies reporting their degradation [16][17] .The SAPs constitute a significant part of domestic waste, making the degradation studies of the synthetic SAPs important. Li and Cui [16] subjected acrylic acid and acrylamide-based SAP to ultravioletinduced decomposition and quantified the degradation by measuring the weight of the SAP at the end of the degradation. Their study, although the first report of its kind, did not provide information about the changes in the swelling capacity of the SAPs during the degradation. In our previous study, we had adopted an improved technique for the photodegradation of poly (acrylic acid-co-sodium acrylate-co-acrylamide) SAPs [17] .The changes in the swelling capacity as well as the residual weights of the SAPs were measured during the degradation and a possible mechanism of the degradation of SAPs was proposed. The SAPs were found to undergo degradation in two stages. In the first stage, the network became sparse and the swelling capacity increased but the residual weight fraction was constant. The rupture of the three-dimensional network took place in the second stage, and thus both the swelling capacity and the residual weights reduced drastically.In the present study, we report the photodegradation of a cationic SAP by the earlier developed method [18] . Here we extend the study to investigate the effect of cross-link density on the photodegradation of the SAP. The cationic SAP poly([2-(methacryloyloxy)ethyl]trimethyl ammonium chloride) (PMALETMAC) was synth...

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Removal of Cationic Dyes from Aqueous Solution by Hydrophobically Modified Poly(acrylic Acid) Hydrogels

Cited by 20 publications

References 26 publications

Synthesis and characterization of magnetic beads containing aminated fibrous surfaces for removal of Reactive Green 19 dye: kinetics and thermodynamic parameters

Synthesis and characterization of magnetic beads containing aminated fibrous surfaces for removal of Reactive Green 19 dye: kinetics and thermodynamic parameters

Synthesis and Characterization of Linear and Cross-Linked Cyclodextrin Polyurethane Elastomers

Photo and Thermal Degradation of a Cationic Superabsorbent Polymer

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