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

• Type: Article in International Scientific Journal
• Date: 2022

Authors

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

Journal

The Journal is awaiting validation by the Administrative Services.

Title: Chemical Engineering Journal Advances

Vol. 10

Pages: 1-12

ISSN: 2666-8211

Indexing

Scopus - 0 Citations

Other information

Authenticus ID: 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)

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12