Valorization of keratin biofibers for removing heavy metals from aqueous solutions

Four common waste keratin biofibers (human hair, dog hair, chicken feathers, and degreased wool) have been used as biosorbents for the removal of heavy metal ions from aqueous solutions. Different parameters of the biosorption processes were optimized in batch systems. For multiple-metal systems, co...

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Bibliographic Details
Published in:Textile research journal 2019-04, Vol.89 (7), p.1153-1165
Main Authors: Zhang, Helan, Carrillo, Fernando, López-Mesas, Montserrat, Palet, Cristina
Format: Article
Language:English
Subjects:
Adsorció
Adsorption
Animal feathers
Aqueous solutions
Aspectes ambientals
Biosorption
Cadmium
Chromium
Cinètica química
Copper
Degreasing
Desenvolupament sostenible
Dogs
Enginyeria química
Environmental sustainability
Feathers
Fourier transforms
Hair
Heavy metal
Heavy metals
Human wastes
Infrared analysis
Infrared spectroscopy
Keratin
Kinetic study
Kinetics
Lead
Manganese
Materials research
Metal ions
Metalls pesants
Morphology
Nickel
Process parameters
Queratina
Química del medi ambient
Scanning electron microscopy
Sorbents
Sorption
Waste minimization
Waste reduction
Wool
Zinc
Àrees temàtiques de la UPC
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Summary:Four common waste keratin biofibers (human hair, dog hair, chicken feathers, and degreased wool) have been used as biosorbents for the removal of heavy metal ions from aqueous solutions. Different parameters of the biosorption processes were optimized in batch systems. For multiple-metal systems, consisting of a mixture of eight metal ions [Cr(III), Mn(II), Co(II), Ni(II), Cu(II), Zn(II), Cd(II), and Pb(II)], the total metal biosorption increased in the order: degreased wool > chicken feathers > human hair > dog hair. From the kinetic models tested, the pseudo-second-order model provided better results. Furthermore, biosorption isotherms of Pb(II) with the different keratin biofibers fitted the Langmuir model. Surface morphology of the biosorbents were analyzed before and after the sorption using Fourier transform infrared spectroscopy and scanning electron microscopy. The keratin biofibers tested are potentially good sorbents of metal ions, with degreased wool and chicken feathers being the more efficient ones.
ISSN:0040-5175
1746-7748
DOI:10.1177/0040517518764008