Adsorption of copper(II) ions by keratin/PA6 blend nanofibres

Aluigi, Annalisa; Tonetti, Cinzia; Vineis, Claudia; Tonin, Claudio; Mazzuchetti, Giorgio

doi:10.1016/j.eurpolymj.2011.06.009

Cited by 109 publications

(76 citation statements)

References 22 publications

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“…To increase the adsorption of heavy metals on nanofiber materials, the following methods have attracted the most attention: (1) utilizing polymers which contain a molecular functional group as resources to electrospinning, such as cellulose acetate (CA), silk fibroin (SF), wool keratin (WK), and PA-6 [15,[64][65][66][67]; (2) surface modification with functional group (the removal efficiency of heavy metal ions increases significantly after the adsorbents have been modified by functional group of -NH 2 , -SH, -SO 3 H, -COO , etc.) [35,62,68]; and (3) increasing the surface areas of nanofibers [31].…”

Section: Heavy Metal Ionsmentioning

confidence: 99%

“…It is worth noting that high efficiency, fast adsorption kinetics, and reusability are of great importance to adsorbents. However, zeolites, silica, and metal organic framework often are limited in their widespread utilization because of structural instability and inefficiency [14][15][16]. In addition, the adsorption capacity of these materials is remarkably diminished in humid conditions or after regeneration [17,18].…”

Section: Introductionmentioning

confidence: 99%

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Adsorbents Based on Electrospun Nanofibers

Wang

2014

Nanostructure Science and Technology

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In the past few decades, removing or controlling the concentration levels of the pollutants including toxic gases, heavy metal ions, and organic contaminants in environmental systems has attracted tremendous attention. Among the numerous approaches, adsorption is considered to be one of the most versatile and promising approach in removing pollutants due to its convenience, ease of operation, simplicity of design, and universal in use. Electrospun nanofibers have unique properties such as large surface area, tailored pore structure, high porosity, and flexibility of surface functionalization, therefore could be used as advanced adsorbents for contaminant removal. Importantly, nanofiber-based adsorbents are expected to possess strong adsorption capacity, fast kinetics, and good reproducibility due to the unique structure of nanofibers. In this chapter, we summarize recent progress in the development of electrospun nanofibrous membrane-based adsorbent for the removal of toxic gases and pollutants in aqueous solution (heavy metal ions and organic contaminants), describe the design of the nanofibrous materials, and discuss their adsorption performance in detail. This chapter might trigger further development and evolution of adsorption based on electrospun nanofibers as one potential to ease the environmental pollution problem.

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Section: Heavy Metal Ionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Adsorbents Based on Electrospun Nanofibers

Wang

2014

Nanostructure Science and Technology

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“…The α-keratin sources are as numerous as in chicken feathers and human hair, even the main chemical content of the hair is 88-96 % α-keratin protein [4]. This shows that α-keratin has the potential to be further developed.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Fe Ions from Aqueous Solution Using α-Keratin-Coated Alginate Biosorbent

Fadillah¹,

Putri²,

Febrianastuti³

et al. 2018

IJESD

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Abstract-The biosorbent α-keratin-alginate (KA) was prepared by using the encapsulation technique in CaCl 2 2 % (w/v) solution. The biosorbent was characterized by Fourier Transform Infrared (FTIR) and Scanning Electron Microscope (SEM). The extent of adsorption was found to be a function of the composition of α-keratin and alginate, the pH of solution and contact time. The optimum adsorption of Fe ions in aqueous solution was found at the composition of α-keratin and alginate of 1:2 (w/w), the pH at 7.0 and contact time at 60 minutes. The adsorption of Fe ions on KA biosorbent was comparatively higher than α-keratin and alginate only. The adsorption capacity of KA biosorbent has the maximum adsorption capacity of 658.4 mg/g while biosorbent α-keratin and alginate are 464.7 mg/g and 528.1 mg/g, respectively. Adsorption of Fe ions in aqueous solution followed the Freundlich adsorption isotherm, and the dynamic adsorption model could be described through a pseudo-second order kinetics.

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“…There are a variety of adsorbing materials in soil remediation, which can be divided into three major categories: a) inorganic minerals including clay, activated carbon zeolite, and molecular sieve b) artificial synthetic materials, including polyvinyl resin and silicone resin c) biomass materials, including lignin, chitosan, and protein As one kind of biomass material, rabbit hair has very high protein content (about 93%) and relatively low crystalline content (13.84-15.50%) [8]. Rabbit hair is abundantly present in textile processing due to its poor spinnability [9]. All wastes are mostly disposed of in landfills, since burning them is inefficient and brings contamination because of the sulfur content of 3-4% [10].…”

Section: Introductionmentioning

confidence: 99%

Rabbit Protein Adsorption Properties of Copper (II) Ion-Polluted Soil

Zhang¹,

Zhang²,

Yang³

2015

Pol. J. Environ. Stud.

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Soil polluted with heavy metal ions is a serious environmental problem. Rabbit protein, prepared by reduction method C, had excellent adsorption performance of heavy metal ions. The adsorption mechanism of rabbit protein was studied and the adsorption process could be well described by the quasi-secondary dynamics equation. When the dosing quantity of rabbit protein powder was 50 g/l and the adsorption time was 180 min, the removal rate of Cu 2+ reached 58.52%. Combining the zeolite powder and using the principle of electro spinning, the nano protein membrane was prepared to adsorb copper ion in the soil, which was efficient, low-cost, and achieved excellent adsorption effect. Hence it could be used as a new type of adsorption material to work out the pollution of heavy metals in the soil. Using waste to treat waste not only realized the reasonable use of a natural protein resource, but also had a certain practical significance on the safety of green organic food.

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Adsorption of copper(II) ions by keratin/PA6 blend nanofibres

Cited by 109 publications

References 22 publications

Adsorbents Based on Electrospun Nanofibers

Adsorbents Based on Electrospun Nanofibers

Adsorption of Fe Ions from Aqueous Solution Using α-Keratin-Coated Alginate Biosorbent

Rabbit Protein Adsorption Properties of Copper (II) Ion-Polluted Soil

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