| Autor: |
Chiara Mongioví, Dario Lacalamita, Nadia Morin-Crini, Xavier Gabrion, Vincent Placet, Ana Rita Lado Ribeiro, Aleksandra Ivanovska, Mirjana Kostić, Corina Bradu, Jean-Noël Staelens, Bernard Martel, Marina Raschetti, Grégorio Crini |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Arabian Journal of Chemistry, Vol 15, Iss 4, Pp 103742- (2022) |
| Druh dokumentu: |
article |
| ISSN: |
1878-5352 |
| DOI: |
10.1016/j.arabjc.2022.103742 |
| Popis: |
In this study, a series of hemp shives (chènevotte) 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 |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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