The Removal of Textile Dyes with Cross-Linked Chitosan-Poly(acrylamide) Adsorbent Hydrogels

Ekici, Sema; Güntekin, Gamze; Saraydın, Dursun

doi:10.1080/03602559.2011.574674

Cited by 28 publications

(10 citation statements)

References 42 publications

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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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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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“…Various methods exist for the removal of heavy metals from industrial effluents and wastewater such as chemical precipitation, ion exchange, solvent extraction, ultrafiltration, evaporation and reverse osmosis techniques. Although, several separation methods are available, but the process of adsorption is the most versatile and plays a significant role in removal of heavy metal contamination from water bodies [5][6][7][8][9] .…”

Section: Introductionmentioning

confidence: 99%

Application of Polythiophene Nanocomposite Coated on Polystyrene and Poly(Vinyl Chloride) for Removal of Pb(II) from Aqueous Solution

Vatani

Eisazadeh

2013

Polymer-Plastics Technology and Engineering

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Poly(vinyl chloride) (PVC) and polystyrene (PS) particles were coated with polythiophene (PTh) by using chemical oxidative polymerization method in the presence of iron chloride (III) and their capability to removal of Pb(II) from aqueous solution was studied. These nanocomposites were characterized by FTIR, SEM and TGA. Batch study was performed to evaluate the influence of various experimental parameters such as pH, water pollution dosage and contact time on the removal of Pb(II). Comparison between nanocomposites showed PTh/PS has better thermal stability than PTh/PVC. Also, results indicated that the removal of Pb(II) was better when PTh/PVC was used as adsorbent.

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“…As functional biological macromolecules, guar gum (GG) offers an interesting set of characteristics such as non-toxicity, biodegradability, biocompatibility and bioactivity for different applications. The presence of hydroxyl groups function as chelating sites for binding metal ions and studies have indicated good adsorption capacity of GG for metal ions and dyes [17]. GG has been modified by functionalization [18,19], grafting and network formation [20], etc., to improve its property profile for a wide spectrum of end-uses.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of a pH-responsive guar gum-based hydrogel as adsorbent for cationic dyes: kinetic and modelling study

Hiremath

Vishalakshi

2015

Polym. Bull.

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Interpenetrating network of guar gum and polyacrylamide has been made by simultaneous polymerization and crosslinking. Two different crosslinkers have been used to control the network structure. The amide groups in the network have been subsequently hydrolyzed by controlled saponification to obtain different degrees of ionic content in the gel. The gels containing -NH 2 and -COOH functionalities have been characterized by FTIR, elemental analysis, DSC and TGA techniques. The swelling of the gel and pH responsiveness have been evaluated. The suitability of the gel as adsorbent material for removal of cationic dyes from aqueous solution has been investigated with crystal violet and azure B. The results revealed high degree of pH responsiveness and high dye adsorption capacity of gels. The adsorption-desorption processes were observed to be effective in repeated cycles, indicating the reusability of the gels for dye removal applications. The adsorption is observed to occur by Fickian diffusion and pseudo-second-order kinetic model appears to describe the adsorption. Crystal violet was absorbed to higher extent and bound stronger than azure B by the gel network. The adsorption is described by Langmuir model in case of crystal violet and Freundlich model for azure B. The thermodynamic parameters of adsorption indicate exothermic adsorption leading to ordered arrangement of dye molecules on the gel.

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The Removal of Textile Dyes with Cross-Linked Chitosan-Poly(acrylamide) Adsorbent Hydrogels

Cited by 28 publications

References 42 publications

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

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

Application of Polythiophene Nanocomposite Coated on Polystyrene and Poly(Vinyl Chloride) for Removal of Pb(II) from Aqueous Solution

Evaluation of a pH-responsive guar gum-based hydrogel as adsorbent for cationic dyes: kinetic and modelling study

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