Human hair biogenic fiber as a biosorbent of multiple heavy metals from aqueous solutions
Zhang, Helan (Universitat Autònoma de Barcelona. Departament de Química)
Carrillo Navarrete, Fernando (Universitat Politècnica de Catalunya. Departament d'Enginyeria Química)
Palet i Ballús, Cristina (Universitat Autònoma de Barcelona. Departament de Química)

Fecha:	2022
Descripción:	16 pàg.
Resumen:	Human hair natural fiber is mainly considered a waste in our society and its disposal can cause a major environmental impact. Hence, its valorization as a biosorbent of pollutants such as heavy metals is an interesting route to explore since it can reduce the amount of waste and at the same time contributes to the circular economy strategy. In this work, the ability of two kinds of human hairs, used as biosorbents to remove Cr(III), Ni(II), Co(II), Mn(II), Cu(II), Zn(II), Cd(II) and Pb(II) ions from multiple-metal aqueous solutions, were examined and compared under different operating conditions. The influence of the time, pH and initial metal concentration on the metal uptake were studied. The biosorption kinetics and isotherm were also modeled observing that pseudo-second-order kinetic model and Langmuir model fitted successfully experimental data. Moreover, biosorption process did not significantly modify the morphology and the chemical structure of the hair samples, which was proved by SEM and FT-IR studies. These kinetic results underline the satisfactory capacity of human hair for the biosorption of Pb(II), Cu(II) and Cr(II) (values up to 95%), pointing up the high efficacy of human hair for the removal of heavy metal ions from aqueous media.
Ayudas:	Ministerio de Economía y Competitividad CTM2015-65414-C2-1-R Ministerio de Economía y Competitividad CTM2012-30970
Nota:	This work was financially supported by the European project ORQUE-SUDOE SOE3-P2-F591.
Derechos:	Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió acceptada per publicar
Materia:	Biofibre ; Biosorption ; Hair ; Isotherms ; Kinetics ; Metals ; SDG 3 - Good Health and Well-being
Publicado en:	Journal of Natural Fibers, Vol. 19, issue 6 (2022) , p. 2018-2033, ISSN 1544-046X

DOI: 10.1080/15440478.2020.1798841

Postprint 20 p, 855.7 KB

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