Revealing the adsorption mechanism of copper on hemp-based materials through EDX, nano-CT, XPS, FTIR, Raman, and XANES characterization techniques

• Tipo: Artigo em Revista Científica Internacional
• Data: 2022

Autores

Chiara Mongioví (Autor) Outra; Gregório Crini (Autor) Outra; Xavier Gabrion (Autor) Outra; Vincent Placet (Autor) Outra; Virginie Blondeau-Patissier (Autor) Outra; Anna Krystianiak (Autor) Outra; Sylvie Durand (Autor) Outra; Johnny Beaugrand (Autor) Outra; Angelina Dorlando (Autor) Outra; Camille Rivard (Autor) Outra; Landrot Gautier (Autor) Outra; Ana Rita Lado Ribeiro (Autor) FEUP; Dario Lacalamita (Autor) Outra; Bernard Martel (Autor) Outra; Jean-Noël Staelens (Autor) Outra; Aleksandra Ivanovska (Autor) Outra; Mirjana Kostic (Autor) Outra; Olivier Heintz (Autor) Outra; Corina Bradu (Autor) Outra; Marina Raschetti (Autor) Outra; Nadia Morin-Crini (Autor) Outra

Revista

A Revista está pendente de validação pelos Serviços Administrativos.

Título: Chemical Engineering Journal Advances

Vol. 10

Páginas: 1-12

ISSN: 2666-8211

Indexação

Scopus - 0 Citações

Outras Informações

ID Authenticus: P-00W-AVF

DOI: 10.1016/j.ceja.2022.100282

Abstract (EN): Hemp-based materials have been recently proposed as adsorbents for metals present in aqueous solutions using adsorption-oriented processes. This study aims to reveal the adsorption mechanism of materials prepared from hemp shives as co-products of the hemp industry, namely sodium carbonate-activated (SHI-C) and polycarboxylic agent-grafted (SHI-BTCA) hemp shives. The interactions between copper and two hemp-based materials were characterized by different microscopic and spectroscopic techniques such as energy-disperse X-ray (EDX) spectroscopy, computed nano-tomography (nano-CT), X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared (FTIR) spectroscopy, Raman spectroscopy, and X-ray absorption near-edge structure (XANES) spectroscopy. The results showed remarkable different mechanisms for copper adsorption onto the SHI-C and SHI-BTCA hemp shives. Namely, copper surface adsorption and diffusion in the structure of the SHI-C material were predominant, whereas the adsorption of copper onto SHI-BTCA was due to a chemisorption phenomenon and ion-exchange involving the adsorbent carboxylate groups. The combination of the abovementioned complementary microscopic and spectroscopic techniques allowed us to characterize and distinguish the type of interactions involved in the liquid-solid adsorption phenomena. © 2022 The Author(s)

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 12