Decontamination of caesium and strontium from stainless steel surfaces using hydrogels

Moore, Joshua; Raine, Thomas; Jenkins, Alex; Livens, Francis R.; Law, Kathleen; Morris, Katherine; Law, Gareth T. W.; Yeates, Stephen G.

doi:10.1016/j.reactfunctpolym.2019.04.004

Cited by 17 publications

(12 citation statements)

References 28 publications

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“…The stress–strain analysis of gels AH20–AH26 demonstrates pseudo‐plastic (shear thinning) behaviour over the strain range examined 32,79,80 (Fig. 11).…”

Section: Resultsmentioning

confidence: 97%

“…25,26 Hydrogels 22,27 having porous crosslinked polymeric structures and high surface areas are also known to adsorb heavy metal ions and radionuclides. [28][29][30][31][32][33] It has been shown, for example, that poly(acrylic acid-co-acrylamide) hydrogels are able to selectively sequester Cu 2+ in the presence of other metal ions from aqueous streams. 34 Numerous studies have also shown that the incorporation of 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPS) into a hydrogel facilitates metal ion binding, as illustrated by the use of a poly(2-acrylamido-2-methyl-1-propanesulfonic acid-covinyl imidazole) hydrogel for the removal of Cu 2+ and Fe 2+ from aqueous waste streams.…”

Section: Introductionmentioning

confidence: 99%

“…Hydrogels 22,27 having porous crosslinked polymeric structures and high surface areas are also known to adsorb heavy metal ions and radionuclides 28–33 . It has been shown, for example, that poly(acrylic acid‐ co ‐acrylamide) hydrogels are able to selectively sequester Cu 2+ in the presence of other metal ions from aqueous streams 34 .…”

Section: Introductionmentioning

confidence: 99%

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Heavy metal sensors and sequestrating agents based on polyaromatic copolymers and hydrogels

Alwattar

Haddad

Moore

et al. 2020

Polymer International

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A series of readily available, amphiphilic pyrene-and perylene-containing fluorescent materials, derived from the copolymerisation of 2-acrylamido-2-methyl-1-propanesulfonic acid with acrylate esters, can be used to detect heavy metal ions in the micromolar concentration range in aqueous solutions. The incorporation of these amphiphilic copolymers into semiinterpenetrating hydrogels also resulted in the irreversible removal of divalent Co 2+ , Ni 2+ , Cu 2+ and Pb 2+ ions from aqueous solutions at neutral pH.

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“…The stress–strain analysis of gels AH20–AH26 demonstrates pseudo‐plastic (shear thinning) behaviour over the strain range examined 32,79,80 (Fig. 11).…”

Section: Resultsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Heavy metal sensors and sequestrating agents based on polyaromatic copolymers and hydrogels

Alwattar

Haddad

Moore

et al. 2020

Polymer International

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“…but are typically characterised as possessing soft ‘rubbery’ characteristics when hydrated 21,24 . Their use is widespread in a variety of areas such as tissue engineering, drug delivery systems, agriculture, energy and wastewater treatment 25–28 . Two hydrogels were used in this study: H1 as a control gel and H2 22…”

Section: Introductionmentioning

confidence: 99%

An efficient reusable perylene hydrogel for removing some toxic dyes from contaminated water

Abdulwahid

Alwattar

Haddad

et al. 2021

Polymer International

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The synthesis of adsorbents that meet the need for large‐scale production at relatively low cost and are capable of removing anionic and cationic toxic dyes from aqueous solutions, with high sorption capacity and reusability, is urgently needed from an environmental and industrial viewpoint. In this context the identification of hydrogels that remove dyes efficiently under ambient conditions and at near‐neutral pH without the necessity of pre‐treatment is an imperative. In this study we report the preparation of two hydrogels using the redox polymerisation of acrylamide, hydroxyethylmethacrylate (HEMA) and N‐isopropylacrylamide (H1) and acrylamide, HEMA, N‐isopropylacrylamide and perylene‐5‐ylpent‐3‐yne‐2‐methylprop‐2‐enoate‐co‐2‐methyl‐2‐(prop‐2‐enoylamino)propane‐1‐sulfonic acid (PePnUMA‐co‐AMPS) (H2). These hydrogels proved to be effective for the removal of methylene blue (MB), fuchsin acid (FA) and Congo Red (CR) from aqueous solution at near‐neutral pH where their adsorption behaviour was in keeping with the Langmuir model having qmax values of 769.2 mg g−1 (MB), 1666.7 mg g−1 (FA) and 2358.2 mg g−1 (CR). The adsorption of MB and FA by these hydrogels follows pseudo‐first‐order kinetics, whilst the adsorption of CR follows pseudo‐second‐order kinetics. Detailed thermodynamic analysis indicated that the dye–adsorbent interaction is primarily one of physisorption in nature. Finally, desorption studies carried out in 1.0 mol L–1 NaClO4 indicated that these adsorbents could be recycled at least four times using a variety of dyes while maintaining their mechanical properties. © 2021 The Authors. Polymer International published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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“…The removal of heavy metals from water and wastewater is essential because of the numerous adverse effects on human health and the environment [ 1 , 4 , 5 , 6 , 7 ]. Several methods are available such as chemical precipitation [ 8 ], coagulation/flocculation [ 9 ], membrane filtration [ 10 ], ion-exchange [ 11 ], bioremediation [ 12 ] and adsorption [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Removal of Cd2+ from Water by Use of Super-Macroporous Cryogels and Comparison to Commercial Adsorbents

et al. 2020

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In this study amphoteric cryogels were synthesized by the use of free-radical co-polymerization of acrylate-based precursors (methacrylic acid and 2-acrylamido-2-methyl-1-propansulfonic acid) with allylamine at different ratios. The physico-chemical characteristics of the cryogels were examined using SEM/EDX, FT-IR, XPS and zeta potential measurements. The cryogels were tested toward Cd2+ removal from aqueous solutions at various pH and initial concentrations. Equilibrium studies revealed a maximum sorption capacity in the range of 132–249 mg/g. Leaching experiments indicated the stability of Cd2+ in the cryogel structure. Based on kinetics, equilibrium and characterization results, possible removal mechanisms are proposed, indicating a combination of ion exchange and complexation of Cd2+ with the cryogels’ surface functional groups. The cryogels were compared to commercially available adsorbents (zeolite Y and cation exchange resin) for the removal of Cd2+ from various water matrices (ultrapure water, tap water and river water) and the results showed that, under the experimental conditions used, the cryogels can be more effective adsorbents.

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Decontamination of caesium and strontium from stainless steel surfaces using hydrogels

Cited by 17 publications

References 28 publications

Heavy metal sensors and sequestrating agents based on polyaromatic copolymers and hydrogels

Heavy metal sensors and sequestrating agents based on polyaromatic copolymers and hydrogels

An efficient reusable perylene hydrogel for removing some toxic dyes from contaminated water

Removal of Cd2+ from Water by Use of Super-Macroporous Cryogels and Comparison to Commercial Adsorbents

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