Biosorbents from Plant Fibers of Hemp and Flax for Metal Removal: Comparison of Their Biosorption Properties - Archive ouverte HAL
Article Dans Une Revue Molecules Année : 2021

Biosorbents from Plant Fibers of Hemp and Flax for Metal Removal: Comparison of Their Biosorption Properties

Chiara Mongioví
  • Fonction : Auteur
Dario Lacalamita
  • Fonction : Auteur
Corina Bradu
  • Fonction : Auteur
Marina Raschetti
  • Fonction : Auteur
Vincent Placet
Ana Rita Lado Ribeiro
  • Fonction : Auteur
Aleksandra Ivanovska
  • Fonction : Auteur
Mirjana Kostić
  • Fonction : Auteur

Résumé

Lignocellulosic fibers extracted from plants are considered an interesting raw material for environmentally friendly products with multiple applications. This work investigated the feasibility of using hemp- and flax-based materials in the form of felts as biosorbents for the removal of metals present in aqueous solutions. Biosorption of Al, Cd, Co, Cu, Mn, Ni and Zn from a single solution by the two lignocellulosic-based felts was examined using a batch mode. The parameters studied were initial metal concentration, adsorbent dosage, contact time, and pH. In controlled conditions, the results showed that: (i) the flax-based felt had higher biosorption capacities with respect to the metals studied than the hemp-based felt; (ii) the highest removal efficiency was always obtained for Cu ions, and the following order of Cu > Cd > Zn > Ni > Co > Al > Mn was found for both examined biosorbents; (iii) the process was rapid and 10 min were sufficient to attain the equilibrium; (iv) the efficiency improved with the increase of the adsorbent dosage; and (v) the biosorption capacities were independent of pH between 4 and 6. Based on the obtained results, it can be considered that plant-based felts are new, efficient materials for metal removal.

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Chimie

Dates et versions

hal-03324581 , version 1 (23-08-2021)

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Citer

Chiara Mongioví, Nadia Morin-Crini, Dario Lacalamita, Corina Bradu, Marina Raschetti, et al.. Biosorbents from Plant Fibers of Hemp and Flax for Metal Removal: Comparison of Their Biosorption Properties. Molecules, 2021, 26 (14), pp.4199. ⟨10.3390/molecules26144199⟩. ⟨hal-03324581⟩
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