Removal of Cu2+ and Pb2+ ions from aqueous solutions by starch-graft-acrylic acid/montmorillonite superabsorbent nanocomposite hydrogels

Güçlü, Gamze; Al, Ebru; Emik, Serkan; İyim, Tülin Banu; Özgümüş, Saadet; Özyürek, Mustafa

doi:10.1007/s00289-009-0217-x

Cited by 150 publications

(47 citation statements)

References 40 publications

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“…The modified St has been used in many industrial and scientific applications. Grafting of acrylamide, acrylonitrile, methacrylonitrile, alkyl methacrylates, vinyl ketones and acrylic acid onto St has been investigated (Lanthong et al 2006;Murthy et al 2006;Güçlü et al 2010;Le Corre et al 2010;Patrickios 2010). St grafted copolymers have been used as hydrogels, flocculants, and ion exchangers (Lanthong et al 2006;Murthy et al 2006;Güçlü et al 2010;Le Corre et al 2010;Patrickios 2010).…”

Section: Introductionmentioning

confidence: 98%

“…The polymer/clay hydrogel composite has received great attention because of its relatively low production cost and high adsorption capacity for some dyes and metal ions (Li and Wang 2005;Ekici et al 2006;Kaşgöz et al 2008;Kundakcı et al 2008Kundakcı et al , 2009Gu and Ye 2009;Güçlü et al 2010;Mahdavinia and Asgari 2013). To reduce costs and * Author for correspondence (ekaradag@adu.edu.tr) improve the comprehensive water-absorbing properties of superabsorbent materials based on acrylic monomers, grafting acrylic monomers onto clay and fabricating a composite consisting of a polymer and clay is a priority (Li and Wang 2005;Ekici et al 2006;Kaşgöz et al 2008;Kundakcı et al 2008Kundakcı et al , 2009Gu and Ye 2009;Güçlü et al 2010;Mahdavinia and Asgari 2013).…”

Section: Introductionmentioning

confidence: 99%

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Novel composite sorbent AAm/MA hydrogels containing starch and kaolin for water sorption and dye uptake

et al. 2014

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A novel polymer/clay composite sorbent based on acrylamide/maleic acid, starch and clay such as kaolin was synthesized with free radical solution polymerization by using ammonium persulfate/N,N,N ,Ntetramethylethylenediamine as redox initiating pair in the presence of poly(ethylene glycol)diacrylate as a crosslinker. Surface morphology was characterized by the scanning electron microscopy technique. FT-IR analysis was used to identify the presence of different repeating units in the semi-interpenetrating polymer networks (semi-IPNs). Some swelling and diffusion characteristics were calculated for different semi-IPNs and hydrogels prepared under various formulations. The hydrogels were used in experiments on sorption of water-soluble cationic dye such as toluidine blue. Sorption of toluidine blue into the polymeric systems was studied by the batch sorption technique at 25 • C. Water uptake and dye sorption properties of the crosslinked polymeric systems were investigated as a function of chemical composition of the hydrogels.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Novel composite sorbent AAm/MA hydrogels containing starch and kaolin for water sorption and dye uptake

et al. 2014

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“…Li et al 12 introduced attapulgite into poly(acrylic acid-co-acrylamide) copolymer and found that when the content of attapulgite increased from 0 to 10 wt %, absorbency of water and 0.9% NaCl solution increased from 684 and 72 g/g to 1414 and 117 g/g, respectively. Güçlü et al 13 studied the effect of reaction conditions, including treatment time, pH values and initial concentration of metal ions, on the adsorption capacity of Cu 2+ and Pb 2+ on MMT/ starch-graft-acrylic acid superabsorbent nanocomposite. Bao et al…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Montmorillonite/Poly(acrylic acid-co-2-acrylamido-2-methyl-1-propane sulfonic acid) Superabsorbent Composite and the Study of its Adsorption

Zhu¹,

Zhang²,

Tang³

2012

Bulletin of the Korean Chemical Society

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A novel superabsorbent composite was prepared by intercalation polymerization of acrylic acid (AA) and 2-acrylamido-2-methyl-1-propane sulfonic acid (AMPS) in the presence of montmorillonite (MMT), using ammonium persulfate (APS) as an initiator and N,N'-methylenebisacrylamide (MBA) as a cross linker. The superabsorbent composite was characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). Maximum absorbency of the composite in distilled water and 0.9% sodium chloride solution was 722 and 108 g/g, respectively. The composite was used for removal of heavy metal ions from aqueous solutions. Maximum amount of adsorption for Ni 2+, Cu 2+ and Pb 2+ was 211.0, 159.6 and 1646.0 mg/g, respectively, and the adsorption was in accordance with both Langmuir and Freundlich model. The composite could be regenerated and reused in wastewater treatment.

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“…On the other hand, the big water content that makes hydrogels such a special class of materials. The importance of hydrogels in the biomaterial field is justified by some unique characteristics: the elastomeric and soft nature of the hydrogels [1][2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…Adsorption is a well-known equilibrium separation process. Recently, new effective, efficient and economic methods for water decontamination applications and for separation analytical purposes have been investigated [2][3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Swelling/Sorption Characteristics of Highly Swollen AAm/AMPS Hydrogels and Semi IPNs with PEG as Biopotential Sorbent

Karadağ¹,

Kundakcı²,

Üzüm³

2011

JEAS

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The aim of this study was to investigate the equilibrium swelling and sorption properties of chemically crosslinked copolymeric hydrogels as biopotential sorbent consisting of acrylamide (AAm) and 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS). Semi-interpenetrating polymer network (semi IPNs) hydrogel, composed of AAm with AMPS as co-monomer, with poly (ethylene glycol) (PEG) and a multifunctional crosslinker such as trimethylolpropane triacrylate (TMPTA) was prepared. AAm/AMPS hydrogels and AAm/AMPS/PEG semi IPNs were synthesized by free radical solution polymerization by using ammonium persulphate (APS)/N,N,N',N'-tetramethylethylenediamine (TEMED) as redox initiating pair. Swelling experiments were performed in water, 0.01 M and 0.03 M aqueous urea solutions at 25˚C, gravimetrically. The hydrogels showed enormous swelling in aqueous urea/water medium and displayed swelling characteristics that were highly depended on the chemical composition of the hydrogels. FTIR spectroscopy was used to identify the presence of different repeating units in the semi IPNs. Some swelling and diffusion characteristics were calculated for different semi IPNs and hydrogels prepared under various formulations. For sorption of cationic dye, Lauths violet into the hydrogels was studied by batch sorption technique at 25˚C. Dye removal capacity, adsorption percentage and partition coefficient of the hydrogels was investigated. Swelling and dye sorption properties of AAm/AMPS hydrogels and AAm/AMPS/PEG semi IPNs were investigated as a function of chemical composition of the hydrogels.

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Removal of Cu2+ and Pb2+ ions from aqueous solutions by starch-graft-acrylic acid/montmorillonite superabsorbent nanocomposite hydrogels

Cited by 150 publications

References 40 publications

Novel composite sorbent AAm/MA hydrogels containing starch and kaolin for water sorption and dye uptake

Novel composite sorbent AAm/MA hydrogels containing starch and kaolin for water sorption and dye uptake

Synthesis of Montmorillonite/Poly(acrylic acid-co-2-acrylamido-2-methyl-1-propane sulfonic acid) Superabsorbent Composite and the Study of its Adsorption

Investigation of Swelling/Sorption Characteristics of Highly Swollen AAm/AMPS Hydrogels and Semi IPNs with PEG as Biopotential Sorbent

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