An indigenous tool for the adsorption of rare earth metal ions from the spent magnet e-waste: An eco-friendly chitosan biopolymer nanocomposite hydrogel

Sethy, Tikina Rani; Biswal, Trinath; Sahoo, Prafulla Kumar

doi:10.1016/j.seppur.2022.122935

Cited by 20 publications

(6 citation statements)

References 35 publications

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“…According to Sethy et al, for the composite hydrogel CS-g-P (AA-co-AM), the initial weight loss is observed at 200 C (20%), the second stage weight loss is observed at around 400 C (50%), and the third stage weight loss is observed around 600 C, indicating that CS is completely degraded. 28 Therefore, the synthesized hydrogel exhibits almost similar thermal stability to CSg-P (AA-co-AM). From the DTG graph, the maximum degradation and loss of weight of the hydrogel were observed at 290 C (Figure 7B).…”

Section: Tga and Dtgmentioning

confidence: 82%

“…The degradation is mainly caused by the cleavage of the CS backbone and the loss of the grafted chain segment present in the hydrogel. According to Sethy et al, for the composite hydrogel CS‐g‐P (AA‐co‐AM), the initial weight loss is observed at 200°C (20%), the second stage weight loss is observed at around 400°C (50%), and the third stage weight loss is observed around 600°C, indicating that CS is completely degraded 28 . Therefore, the synthesized hydrogel exhibits almost similar thermal stability to CS‐g‐P (AA‐co‐AM).…”

Section: Resultsmentioning

confidence: 99%

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Synthesis and characterization of poly (acrylamide‐co‐acrylic acid)/chitosan (derived from fish scales) for controlled release of amoxicillin drug

Sahoo,

Biswal

2024

Polymer Engineering & Sci

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Chitosan (CS) can be extracted from waste fish scales through a series of chemical processes, including demineralization, deproteinization, and deacetylation. The biomaterial poly (acrylamide [AM]‐co‐acrylic acid [AA])/CS is a unique superabsorbent material synthesized through the free radical graft copolymerization method by using AM, AA, and CS powder. During synthesis, ammonium persulfate is used as an initiator, and N, N′‐methylene bisacrylamide is used as a cross‐linker. Scanning electron microscopy and Fourier transform infrared spectroscopy have been studied to know about the morphology and structure of the synthesized superabsorbent materials. The water absorbency of the material continuously increases from day 1 to day 30. The thermogravimetric analysis (TGA) and derivative thermogravimetry (DTG) of the superabsorbent material show adequate thermal stability. The X‐ray diffraction (XRD) analysis indicates that the synthesized biomaterial is virtually amorphous in nature. The percentage of biodegradability increases with time. The encapsulation efficiency of amoxicillin drugs is around 70%, which indicates that the biomaterial is highly efficient for drug release applications. The synthesized novel biomaterial is a low‐cost, eco‐friendly, and thermally stable hydrogel that can be effectively used in drug release applications.Highlights Chitosan (CS)‐based hydrogels are highly pH‐sensitive towards drug release. The biodegradability and swelling behavior of the synthesized biomaterial were studied by adopting a suitable methodology. The novel material formed was characterized by using Fourier transform infrared spectroscopy, TGA, and Scanning electron microscopy. The encapsulation efficiency, kinetic study, and controlled drug release behavior of the amoxicillin drug were studied in solutions of simulated gastric fluid and phosphate‐buffered saline. The material developed in this study shows good performance in controlled drug delivery, and is therefore suitable for manufacturing medical devices used in drug delivery.

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Section: Tga and Dtgmentioning

confidence: 82%

Section: Resultsmentioning

confidence: 99%

Synthesis and characterization of poly (acrylamide‐co‐acrylic acid)/chitosan (derived from fish scales) for controlled release of amoxicillin drug

Sahoo,

Biswal

2024

Polymer Engineering & Sci

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“…and chemisorption (covalent bonding) have been found responsible for the indoor pollutant adsorption [31]. Common polymeric nanocomposites used in this regard include polymer/graphene [32], polymer/metal oxide [33], polymer/nanoclay [34], polymer/MOF [35], etc. Thus, the combination of polymer and nanoparticles has been observed as an effective way to purify the indoor air and to attain high IAQ level.…”

Section: Iaq Enhancement Using Polymer Nanocomposite Adsorbentsmentioning

confidence: 99%

Indoor Air Quality Treatment Using Polymer Nanocomposite Adsorbents

Kausar¹

2023

PSPRJ

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“…), nanoclays, graphene oxide, and carbon nanotubes, contribute unique properties such as high surface area, catalytic activity, photocatalytic properties, and antimicrobial effects [ 38 , 39 , 40 ]. These synergistic combinations enable biopolymeric nanocomposites to tackle specific water treatment challenges [ 41 ], such as removing heavy metals [ 42 ], organic pollutants [ 43 ], and microorganisms [ 44 ]. The synthesis and characterization of biopolymeric nanocomposites have witnessed significant advancements in recent years [ 45 ].…”

Section: Introductionmentioning

confidence: 99%

Next-Generation Water Treatment: Exploring the Potential of Biopolymer-Based Nanocomposites in Adsorption and Membrane Filtration

Kolya

Kang

2023

Polymers

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This review article focuses on the potential of biopolymer-based nanocomposites incorporating nanoparticles, graphene oxide (GO), carbon nanotubes (CNTs), and nanoclays in adsorption and membrane filtration processes for water treatment. The aim is to explore the effectiveness of these innovative materials in addressing water scarcity and contamination issues. The review highlights the exceptional adsorption capacities and improved membrane performance offered by chitosan, GO, and CNTs, which make them effective in removing heavy metals, organic pollutants, and emerging contaminants from water. It also emphasizes the high surface area and ion exchange capacity of nanoclays, enabling the removal of heavy metals, organic contaminants, and dyes. Integrating magnetic (Fe2O4) adsorbents and membrane filtration technologies is highlighted to enhance adsorption and separation efficiency. The limitations and challenges associated are also discussed. The review concludes by emphasizing the importance of collaboration with industry stakeholders in advancing biopolymer-based nanocomposites for sustainable and comprehensive water treatment solutions.

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An indigenous tool for the adsorption of rare earth metal ions from the spent magnet e-waste: An eco-friendly chitosan biopolymer nanocomposite hydrogel

Cited by 20 publications

References 35 publications

Synthesis and characterization of poly (acrylamide‐co‐acrylic acid)/chitosan (derived from fish scales) for controlled release of amoxicillin drug

Synthesis and characterization of poly (acrylamide‐co‐acrylic acid)/chitosan (derived from fish scales) for controlled release of amoxicillin drug

Indoor Air Quality Treatment Using Polymer Nanocomposite Adsorbents

Next-Generation Water Treatment: Exploring the Potential of Biopolymer-Based Nanocomposites in Adsorption and Membrane Filtration

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