Modified polyacrylamide hydrogels and their application in removal of heavy metal ions

Kaşgöz, Hasine; Özgümüş, Saadet; Orbay, Murat

doi:10.1016/s0032-3861(03)00033-8

Cited by 242 publications

(57 citation statements)

References 23 publications

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“…Kaşgöz et al [30] have modified PAM hydrogels by Mannich reaction using different amine compounds, namely, diethylenetriamine (DETA), ethylenediamine (EDA) and triethylenetetramine (TETA), and sulfomethylation reaction. The FTIR was used to characterise the adsorbents.…”

Section: Polyacrylamide (Pam)mentioning

confidence: 99%

The Use of Acrylic-Based Polymers in Environmental Remediation Studies

Yayayürük¹

2017

Acrylic Polymers in Healthcare

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Heavy metals are not biodegradable and tend to accumulate in living organisms. Many heavy metal ions are known to be toxic or carcinogenic. Thus, removal of these toxic heavy metals from water is of crucial importance to protect the human population and the environment. In recent years, polymeric adsorbents have received considerable interest for heavy metal removal mainly due to important technological and scientific developments such as easy synthesis at controlled dimensions with variable functional groups, perfect mechanical rigidity, tunable surface chemistry, large surface area, pore size distribution, high uptake values and feasible regeneration under mild conditions. This chapter has attempted to present to the readers the widespread investigations of acrylic-based polymeric adsorbents so that the reader can get an idea about the various types and forms of polymeric materials used for the removal of heavy metals from water.

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Section: Polyacrylamide (Pam)mentioning

confidence: 99%

The Use of Acrylic-Based Polymers in Environmental Remediation Studies

Yayayürük¹

2017

Acrylic Polymers in Healthcare

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“…A higher concentration of nickel, one of the heavy metals, in the living body usually leads to different allergic reactions (dermatitis, rhinitis, etc. ), anemia, increased excitability of the central and autonomic nervous systems [5]. Nickel is one of the carcinogenic elements.…”

Section: Introductionmentioning

confidence: 99%

Effect of Friendly Sorbents on Base Polymer Nanocomposites

Olekhnovich¹,

Gusev²,

Ishevskiy³

et al. 2017

WIT Transactions on Ecology and the Environment

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Clay-based superabsorbents were synthesized using sodium bentonite via radical copolymerization of acrylic acid and acrylamide at temperatures between 30°C and 45°C. Ammonium persulphate -tetramethylethylenediamine was used as an initiator oxidation-reduction system, and N,N'-methylene-bis-acrylamide as the cross-linked agent. The swelling behaviour of clay-based superabsorbent samples in aqueous solutions at different temperatures was investigated. The sorption processes of nickel ions from aqueous solutions were studied. It has been shown to influence the proportion of bentonite sorption kinetics of nickel ions from aqueous solutions of different concentrations. Clay-containing polymer composites can be used as friendly materials for wastewater treatment.

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“…Over the past few decades several interesting properties and applications of polyacrylamide (PAAm) hydrogels have been explored after selectively modifying their molecular structures using various processes such as hydrolysis [1][2][3][4], or immobilizing external components such as colloidal crystals [5], crown ether (CE) [6] and various functional groups [7][8][9] within their networks. For instance, Tanaka et al [1] have studied the phase transition behaviour of hydrolysed PAAm hydrogels in various concentrations of acetone/water mixture.…”

Section: Introductionmentioning

confidence: 99%

Structural investigation on gamma-irradiated polyacrylamide hydrogels using small-angle neutron scattering and ultraviolet–visible spectroscopy

2015

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Small-angle neutron scattering (SANS) and ultraviolet (UV)-visible spectroscopic techniques are used to investigate the microstructural changes in polyacrylamide (PAAm) hydrogels on gamma irradiation. SANS measurements have revealed the presence of inhomogeneities in nanometre scale and reduction of their size with increase in dose. Analysis of SANS data also revealed the increase in the correlation length with increase in dose. The extinction coefficient obtained from the UV-visible spectroscopic studies exhibited λ −β dependence between 500 and 700 nm and is understood to arise from the existence of scatterers (inhomogeneities) in submicron scale in PAAm hydrogels. The increase in value of exponent β with increase in dose indicates that the size of scatterers decrease with increase in dose.

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Modified polyacrylamide hydrogels and their application in removal of heavy metal ions

Cited by 242 publications

References 23 publications

The Use of Acrylic-Based Polymers in Environmental Remediation Studies

The Use of Acrylic-Based Polymers in Environmental Remediation Studies

Effect of Friendly Sorbents on Base Polymer Nanocomposites

Structural investigation on gamma-irradiated polyacrylamide hydrogels using small-angle neutron scattering and ultraviolet–visible spectroscopy

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