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Abstract
Human hair is considered a ubiquitous waste product and its accumulation can cause environmental problems. Hence, the search for alternatives that take advantage of this waste as a new raw material is of interest, and contributes to the idea of the circular economy. In this study, chemically modified human hair was used as a low cost biosorbent for the removal of heavy metal ions from aqueous solutions. The effect of the contact time, the pH, and the biosorbent concentration on the biosorption process were investigated. Kinetic modeling indicated that the pseudo-second order kinetic equation fitted well with R2 > 0.999. Furthermore, the equilibrium data fitted the Langmuir adsorption isotherm at 295 K resulting in saturation concentrations of 9.47 × 10-5, 5.57 × 10-5, 3.77 × 10-5, and 3.61 × 10-5 mol/g for the sorption of Cr(III), Cu(II), Cd(II), and Pb(II), respectively. The biosorption process did not change the chemical structure and morphology of the hair, which was shown by FTIR and SEM. In addition, desorption experiments prove that 0.1 mol/L EDTA solution is an efficient eluent for the recovery of Pb(II) from the treated human hair. To summarize, treated human hair showed satisfactory biosorption capacity and can be considered as an effective biosorbent for the treatment of water with a low concentration of heavy metal ions.
Original language | English |
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Pages (from-to) | 1263-1279 |
Number of pages | 17 |
Journal | Water (Switzerland) |
Volume | 12 |
Issue number | 5 |
DOIs | |
Publication status | Published - 1 May 2020 |
Keywords
- Biosorption
- Heavy metal
- Human hair
- Isotherms
- Kinetics
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Dive into the research topics of 'Use of chemically treated human hair wastes for the removal of heavy metal ions from water'. Together they form a unique fingerprint.Projects
- 2 Finished
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Especiación química: de medio ambiente a la salud, un enfoque nexus
Valiente Malmagro, M. (Principal Investigator), López Mesas, M. (Principal Investigator 2), Binti Abu Samah, N. (Collaborator), Fuentes, V. (Collaborator), Xiao, T. (Collaborator), Brianso Penalva, J. L. (Investigator), Donard, O. (Investigator), Hassan, M. (Investigator), Lassalle, B. (Investigator), Luque Gálvez, M. P. (Investigator), Moe, O. (Investigator), Muhammed, M. (Investigator), Palet Ballus, C. (Investigator), Pell Lorente, A. (Investigator), Perez Gonzalez, G. (Investigator), Resina Gallego, M. (Investigator), Siener, R. (Investigator) & Sánchez Martín, M. J. (Investigator)
1/01/16 → 31/12/19
Project: Research Projects and Other Grants
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EVOLUCION TECNOLOGICA DE LA ESPECIACION QUIMICA. TECNOLOGIA QUIMICA Y DEL SINCROTRON PARA LA CARACTERIZACION Y DESARROLLO DE SISTEMAS MEDIOAMBIENTALES Y BIOMATERIALES
Valiente Malmagro, M. (Principal Investigator), Baltrons Rosell, O. (Scholar), Blanco Lucena, F. (Scholar), Kotkowska , O. M. (Scholar), Ortiz Alias, P. (Scholar), Tong , L. (Scholar), Zhang , H. (Scholar), Cruzalta, K. E. (Collaborator), Bonifazi, G. (Investigator), Brianso Penalva, J. L. (Investigator), Havel, J. (Investigator), Klementiev, K. (Investigator), López Mesas, M. (Investigator), Moe, O. (Investigator), Morillo Martin, D. (Investigator), Muhammed, M. (Investigator), Muñoz Viveros, C. (Investigator), Palet Ballus, C. (Investigator), Perez Gonzalez, G. (Investigator) & Resina Gallego, M. (Investigator)
Spanish Ministry of Economy and Competitiveness (MINECO)
1/01/13 → 31/12/15
Project: Research Projects and Other Grants