Use of che` nevotte, a valuable co-product of industrial hemp fiber, as adsorbent for copper ions: Kinetic studies and modeling

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

Autores

Chiara Mongioví (Autor) Outra; Dario Lacalamita (Autor) Outra; Nadia Morin-Crini (Autor) Outra; Xavier Gabrion (Autor) Outra; Vincent Placet (Autor) Outra; Ana Rita Lado Ribeiro (Autor) FEUP; Aleksandra Ivanovska (Autor) Outra; Mirjana Kostic (Autor) Outra; Corina Bradu (Autor) Outra; Jean-Noël Staelens (Autor) Outra; Bernard Martel (Autor) Outra; Marina Raschetti (Autor) Outra; Grégorio Crini (Autor) Outra

Revista

Título: Arabian Journal of Chemistry

Vol. 15

Páginas: 1-15

ISSN: 1878-5352

Editora: King Saud University

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 0 Citações

Projetos Associados

LA LSRE-LCM - Financiamento Plurianual 2020-2023 para a Unidade LA LSRE-LCM Laboratório de Processos de Separação e Reacção - Laboratório de Catálise e Materiais

Outras Informações

ID Authenticus: P-00W-3XX

DOI: 10.1016/j.arabjc.2022.103742

Abstract (EN): In this study, a series of hemp shives (chenevotte) with different chemical compositions and properties, namely a raw (SHI-R), a washed with water (SHI-W), three samples chemically modified with KOH (SHI-OH), Na2CO3 (SHI-C) or H3PO4 (SHI-H), and a hemp shives sample prepared by grafting of carboxylic groups (SHI-BTCA), were used as adsorbents for the removal of copper present in aqueous solutions. This article presents the abatements and kinetics obtained using batch experiments and their modeling. The results first showed that the quantity of copper removed depended on the used shives and the copper initial concentration. At the same experimental conditions, SHI-C and SHI-BTCA samples possessed similar performances which are significantly higher than those of other studied hemp shives. Copper adsorption reached equilibrium after 60 min of contact time and was independent of concentration in the range 5-150 mg/L for SHI-C and SHI-BTCA. According to the better Chi-squared values, the experimental data were better simulated by the non-linear kinetic model in the order: Lagergren < Elovich < Ho and McKay < Weber and Morris < Boyd for SHI-C and Boyd < Ho and McKay < Weber and Morris < Lagergren < Elovich for SHI-BTCA. The analysis of data indicated that chemisorption is the main mechanism for binding copper onto SHI-BTCA, while physisorption (diffusion) is the main interaction for copper adsorption onto SHI-C. The adsorption-oriented process using hemp shives could be an advantageous approach for recovering copper from metal industry effluents due to the simplicity of the process, its efficiency to treat both diluted and concentrated copper solutions, and the low-cost, non-toxic to humans and the environment, ecological character, and facile use of hemp shives.& nbsp;(c) 2022 The Author(s). Published by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 15