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Melhaoui R, Miyah Y, Kodad S, Houmy N, Addi M, Abid M, Mihamou A, Serghini-Caid H, Lairini S, Tijani N, Hano C, Elamrani A. On the Suitability of Almond Shells for the Manufacture of a Natural Low-Cost Bioadsorbent to Remove Brilliant Green: Kinetics and Equilibrium Isotherms Study. ScientificWorldJournal 2021; 2021:6659902. [PMID: 33603573 PMCID: PMC7868153 DOI: 10.1155/2021/6659902] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 01/01/2021] [Accepted: 01/16/2021] [Indexed: 12/07/2022] Open
Abstract
Almond production generates a large number of coproducts, but the farmer's interest mainly focuses on the nutritional and commercial aspects of the kernel for getting the best return from their harvests. Thus, almond coproducts such as almond shells that represent more than 70% of biomass remain underexplored. In this work, the suitability of almond shell powder (ASP) as a natural low-cost adsorbent was evaluated in the adsorption of brilliant green dye (BG), which is known as a chemical pollutant. Brunauer-Emmett-Teller (BET) method, for the determination of specific surface area, Fourier-transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM) techniques were performed to characterize the ASP adsorbent. The batch adsorption kinetic study for the removal of BG dye was carried out by varying pH, temperature, initial concentration of the dye, bioadsorbent dose, and contact time. It was found that 98% of BG dye is removed under the following optimal experimental conditions: ASP bioadsorbent dose of 1 g/L at T = 25°C, pH = 6.8, and C 0 = 1 g/L, which proves that ASP can be used as an excellent low-cost bioadsorbent for the removal of BG dye from wastewater. The experimental isotherm data were analyzed using Freundlich and Langmuir models. The results show the best correlation with single-layer adsorption, and the adsorption kinetics seems to follow a pseudo-second-order model.
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Affiliation(s)
- R. Melhaoui
- Laboratoire dʼAmélioration des Productions Agricoles, Biotechnologie et Environnement, (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
| | - Y. Miyah
- Laboratoire de Catalyse, Matériaux et Environment, EST, Université Sidi Mohammed Ben Abdellah, Fez, Morocco
| | - S. Kodad
- Laboratoire dʼAmélioration des Productions Agricoles, Biotechnologie et Environnement, (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
| | - N. Houmy
- Laboratoire dʼAmélioration des Productions Agricoles, Biotechnologie et Environnement, (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
| | - M. Addi
- Laboratoire dʼAmélioration des Productions Agricoles, Biotechnologie et Environnement, (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
| | - M. Abid
- Laboratoire dʼAmélioration des Productions Agricoles, Biotechnologie et Environnement, (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
| | - A. Mihamou
- Laboratoire dʼAmélioration des Productions Agricoles, Biotechnologie et Environnement, (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
| | - H. Serghini-Caid
- Laboratoire dʼAmélioration des Productions Agricoles, Biotechnologie et Environnement, (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
| | - S. Lairini
- Laboratoire de Catalyse, Matériaux et Environment, EST, Université Sidi Mohammed Ben Abdellah, Fez, Morocco
| | - N. Tijani
- Equipe de Recherche, Membranes, Matériaux et Procédés de Séparation, Faculté des Sciences, Université Moulay Ismaîl, Meknès, Morocco
| | - C. Hano
- Laboratoire de Biologie des Ligneux et des Grandes Cultures, INRAE USC1328, University of Orleans, Orleans, France
| | - A. Elamrani
- Laboratoire dʼAmélioration des Productions Agricoles, Biotechnologie et Environnement, (LAPABE), Faculté des Sciences, Université Mohammed Premier, Oujda, Morocco
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