Selective recovery of palladium by wool resin and woven wool fabric resinrbents

Akioka, Shota; Hirai, Shinji; Ise, Tomokazu; Gando, Naohisa; Alharbi, Mohammed Abdullah Hamad

doi:10.1016/j.hydromet.2021.105629

Cited by 9 publications

(3 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The studies on the behavior of protein biofibers in the uptake of metal ions from poly-metal aqueous synthetic solutions are by no means numerous. Those that already exist followed two lines of investigation: (i) description of the competitive effects in multicomponent systems of biosorption [243][244][245][246][247]; (ii) evaluation of the industrial applicability of biosorbents based on wool fibers through studies on simulated industrial effluents containing different ions [126,134,[248][249][250]. From the first category, the recent studies on the competitive biosorption of Cr(III) and Cu(II) from binary solutions on electron beam-irradiated sheep wool are of particular importance [243,244].…”

Section: Multi-metal Systems Of Biosorptionmentioning

confidence: 99%

“…From the other perspective, amidoximated wool fibers displayed a high U uptake capacity (25-35 mg/g) for biosorption of uranyl ions (102.8 mg/L) from simulated nuclear industry effluents, which also contained Cd(II) (89.05 mg/L); Ce(III) (100.1 mg/L); Eu(III) (97.95 mg/L); Co(II) (93.7 mg/L); La(III) (99.7 mg/L); Mn(II) (101.7 mg/L) and Ni(II) (85.85 mg/L); and Sm(III) (102 mg/L), at pH = 4 [126]. Chlorine-treated woven wool fabric has been able to recover 70% of Pd(II) and 65% of Au(III) from an aqueous solution containing 100 mg/L each of the following ions: Au, Pd, Pt, Ru, Ir, Hf, Sb, Sn, and Te [250].…”

Section: Multi-metal Systems Of Biosorptionmentioning

confidence: 99%

See 1 more Smart Citation

Insights into the Applications of Natural Fibers to Metal Separation from Aqueous Solutions

Tofan

2023

Polymers

View full text Add to dashboard Cite

There is a wide range of renewable materials with attractive prospects for the development of green technologies for the removal and recovery of metals from aqueous streams. A special category among them are natural fibers of biological origin, which combine remarkable biosorption properties with the adaptability of useful forms for cleanup and recycling purposes. To support the efficient exploitation of these advantages, this article reviews the current state of research on the potential and real applications of natural cellulosic and protein fibers as biosorbents for the sequestration of metals from aqueous solutions. The discussion on the scientific literature reports is made in sections that consider the classification and characterization of natural fibers and the analysis of performances of lignocellulosic biofibers and wool, silk, and human hair waste fibers to the metal uptake from diluted aqueous solutions. Finally, future research directions are recommended. Compared to other reviews, this work debates, systematizes, and correlates the available data on the metal biosorption on plant and protein biofibers, under non-competitive and competitive conditions, from synthetic, simulated, and real solutions, providing a deep insight into the biosorbents based on both types of eco-friendly fibers.

show abstract

Section: Multi-metal Systems Of Biosorptionmentioning

confidence: 99%

Section: Multi-metal Systems Of Biosorptionmentioning

confidence: 99%

Insights into the Applications of Natural Fibers to Metal Separation from Aqueous Solutions

Tofan

2023

Polymers

View full text Add to dashboard Cite

show abstract

“…However, the outer layer of wool cuticle cells (scales) is protected by a high degree of cystine cross-linking, and the surface is hydrophobic. In a previous study, we used chlorine treatment to remove these cuticular cells, which drastically improved metal cation adsorption (Akioka et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Rare-earth ions as antibacterial agents for woven wool fabric

Akioka¹,

Hirai²,

Iijima³

et al. 2022

Chem. Pap.

Self Cite

View full text Add to dashboard Cite

Woven fabrics were bestowed with antibacterial property by the simple adsorption of rare-earth metal ions, and the underlying mechanism was investigated using electron spin resonance (ESR) spectroscopy. The adsorption of Ce 3+ ions on wool, silk, and cotton fabrics resulted in significant inhibition of Staphylococcus aureus (a gram-positive bacterium), with maximum antibacterial activities (viable bacterial count compared to the reference) of 4.7, 5.8, and 5.2, respectively. Even after 50 wash cycles, the values remained at 3.9, 2.9, and 4.8, respectively. The adsorption of La 3+ and Gd 3+ ions on wool fabrics also resulted in antibacterial activities of 5.8 and 5.9, respectively. In addition, wool adsorbed with Ce 3+ exhibits a satisfactory antibacterial activity of 6.2 against Escherichia coli (a gram-negative bacterium). Such bacterial inhibition is attributed to Fenton reactions between the adsorbed rare-earth ions and hydrogen peroxide (H 2 O 2 ) produced during bacterial metabolism, as determined from the ESR spectra collected using the spin trap method in the presence of H 2 O 2 . The safety of cerium nitrate was also investigated, and no significant issues arose, indicating that it was a safe antibacterial agent. This facile method of imparting antibacterial properties to natural fabrics may be useful for preventing infections in humans.

show abstract

A Glance at Novel Materials, from the Textile World to Environmental Remediation

et al. 2023

View full text Add to dashboard Cite

In the current state of the art, textile products and materials generate a significant environmental impact since they are not managed under a circular economy paradigm. It is urgent to define new sustainable paths in the textiles industry by setting up materials, technologies, processes, and business models to reuse and recycle textiles production waste and End-of-Life textiles. In this direction, taking advantage of textile-related materials, especially from renewable and waste resources, for depollution purposes appears very promising since it enables re-use, but it also supports secondary applications with a high sustainability impact. This review collects and describes possible adsorption, filtration and purification capabilities of (i) various functionalized textiles, (ii) biopolymers constituting the natural fibers (cellulose, keratin, fibroin) and (iii) textile-derived active carbons and biochar, in order to provide a structured framework for the systemic exploitation of the depollution potential of waste textiles. The correlations among the type of textile materials, the physical-chemical treatments, and the characteristics influencing the performances of such materials as decontaminating tools will be underlined.

show abstract

Selective recovery of palladium by wool resin and woven wool fabric resinrbents

Cited by 9 publications

References 42 publications

Insights into the Applications of Natural Fibers to Metal Separation from Aqueous Solutions

Insights into the Applications of Natural Fibers to Metal Separation from Aqueous Solutions

Rare-earth ions as antibacterial agents for woven wool fabric

A Glance at Novel Materials, from the Textile World to Environmental Remediation

Contact Info

Product

Resources

About