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Ben Khemis I, Aouaini F, Knani S, Saad Al-Mugren K, Ben Lamine A. Microscopic and macroscopic analysis of hexavalent chromium adsorption on polypyrrole-polyaniline@rice husk ash adsorbent using statistical physics modeling. Heliyon 2024; 10:e37061. [PMID: 39319120 PMCID: PMC11419908 DOI: 10.1016/j.heliyon.2024.e37061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 06/15/2024] [Accepted: 08/27/2024] [Indexed: 09/26/2024] Open
Abstract
This paper contributed with new findings to understand and characterize a heavy metal adsorption on a composite adsorbent. The synthesized polypyrrole-polyaniline@rice husk ash (PPY-PANI@RHA) was prepared and used as an adsorbent for the removal of hexavalent chromium Cr(VI). The adsorption isotherms of Cr(VI) ions on PPY-PANI@RHA were experimentally determined at pH 2, and at different adsorption temperatures (293, 303, and 313 K). Multi-layer model developed using statistical physics formalism was applied to theoretically analyze and characterize the different interactions and ion exchanges during the adsorption process for the elimination of this toxic metal from aqueous solutions, and to attribute new physicochemical interpretation of the process of adsorption. The physicochemical structures and properties of the synthesized PPY-PANI@RHA were characterized via Fourier transform infrared spectroscopy (FTIR). Fitting findings showed that the mechanism of adsorption of Cr(VI) on PPY-PANI@RHA was a multi-ionic mechanism, where one binding site may be occupied by one and two ions. It may also be noticed that the temperature augmentation generated the activation of more functional groups of the composite adsorbent, facilitating the interactions of metal ions with the binding sites and the access to smaller pore. The energetic characterization suggested that the mechanism of adsorption of the investigated systems was exothermic and Cr(VI) ions were physisorbed on PPY-PANI@RHA surface via electrostatic interaction, reduction of Cr(VI) to Cr(III), hydrogen bonding, and ion exchange. Overall, the utilization of the theory of statistical physics provided fruitful and profounder analysis of the adsorption mechanism. The estimation of the pore size distribution (PSD) of the polypyrrole-polyaniline@rice husk ash using the statistical physics approach was considered stereographic characterization of the adsorbent (here PPY-PANI@RHA was globally a meso-porous adsorbent). Lastly, the mechanism of Cr(VI) removal from wastewater using PPY-PANI@RHA as adsorbent was macroscopically investigated via the estimation of three thermodynamic functions.
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Affiliation(s)
- Ismahene Ben Khemis
- Laboratory of Quantum and Statistical Physics LR 18 ES 18, Faculty of Sciences of Monastir, Environnement Street, 5019, Monastir, Tunisia
| | - Fatma Aouaini
- Department of Physics, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia
| | - Salah Knani
- Department of Physics, College of Science, Northern Border University, Arar, Saudi Arabia
| | - Kholoud Saad Al-Mugren
- Department of Physics, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia
| | - Abdelmottaleb Ben Lamine
- Laboratory of Quantum and Statistical Physics LR 18 ES 18, Faculty of Sciences of Monastir, Environnement Street, 5019, Monastir, Tunisia
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Yu SH, Feng XY, Fan MY, Zhang YZ, Wang Y. Efficient removal of phosphorus and nitrogen from aquatic environment using sepiolite-MgO nanocomposites: preparation, characterization, removal performance, and mechanism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:17481-17493. [PMID: 38342832 DOI: 10.1007/s11356-024-32346-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 02/01/2024] [Indexed: 02/13/2024]
Abstract
Excessive phosphorus will lead to eutrophication in aquatic environment; the efficient removal of phosphorus is crucial for wastewater engineering and surface water management. This study aimed to fabricate a nanorod-like sepiolite-supported MgO (S-MgO) nanocomposite with high specific surface area for efficient phosphate removal using a facile microwave-assisted method and calcining processes. The impact of solution pH, adsorbent dosage, contact time, initial phosphate concentrations, Ca2+ addition, and N/P ratio on the phosphate removal was extensively examined by the batch experiments. The findings demonstrated that the S-MgO nanocomposite exhibited effective removal performance for low-level phosphate (0 ~ 2.0 mM) within the pH range of 3.0 ~ 10.0. Additionally, the nanocomposite can synchronously remove phosphate and ammonium in high-level nutrient conditions (> 2.0 mM), with the maximum removal capacities of 188.49 mg P/g and 89.78 mg N/g. Quantitative and qualitative analyses confirmed the successful harvesting of struvite in effluent with high-phosphate concentrations, with the mechanisms involved attributed to a synergistic combination of sorption and struvite crystallization. Due to its proficient phosphate removal efficiency, cost-effectiveness, and substantial removal capacity, the developed S-MgO nanocomposite exhibits promising potential for application in phosphorus removal from aquatic environments.
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Affiliation(s)
- Sheng-Hui Yu
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, People's Republic of China.
| | - Xin-Yi Feng
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, People's Republic of China
| | - Mei-Ying Fan
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, People's Republic of China
| | - Yuan-Zhao Zhang
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, People's Republic of China
| | - Yan Wang
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, People's Republic of China
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Yu SH, Wang Y, Wan YY, Guo JK. Enhance antimony adsorption from aquatic environment by microwave-assisted prepared Fe 3O 4 nanospherolites. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:94401-94413. [PMID: 37531060 DOI: 10.1007/s11356-023-29060-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 07/26/2023] [Indexed: 08/03/2023]
Abstract
A novel hierarchically nanostructured magnetite (Fe3O4) was manufactured using microwave-assisted reflux method without surfactants. The nanostructured Fe3O4 is formed via the co-precipitation of Fe(III) and Fe(II), followed by a nanocrystal aggregation-based mechanism. Moreover, the effects of solution pH, contact time, initial Sb concentration, coexisting anions, and recycle numbers on the adsorption of nanostructured Fe3O4 toward Sb were extensively examined in the batch adsorption tests. The results demonstrated that the obtained Fe3O4 exhibited excellent adsorption ability toward Sb with the maximum adsorption capacities of 154.2 and 161.1 mg.g-1 for Sb(III) and Sb(V), respectively. The prepared Fe3O4 could be easily regenerated and reused for adsorption/desorption studies multiple times without compromising the Sb adsorption ability. Further exploration indicated that the oxidation or reduction reactions infrequently occurred during Sb adsorption processes. The proposed hierarchically nanostructured Fe3O4 thus could be potentially used for sustainable and efficient antimony removal.
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Affiliation(s)
- Sheng-Hui Yu
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, People's Republic of China.
| | - Yan Wang
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, People's Republic of China
| | - Yi-Yuan Wan
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, People's Republic of China
| | - Jun-Kang Guo
- School of Environmental Science and Engineering, Shaanxi University of Science & Technology, Xi'an, 710021, People's Republic of China
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Cui J, Li X, Ma S, Wei W. Cellulose bridged carbonate hydroxyapatite nanoparticles as novel adsorbents for efficient Cr(VI) removal. J DISPER SCI TECHNOL 2022. [DOI: 10.1080/01932691.2022.2122496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Jing Cui
- School of Environment, Nanjing Normal University, Nanjing, China
- Jiangsu Province Engineering Research Center of Environmental Risk Prevention and Emergency Response Technology, Jiangsu Engineering Lab of Water and Soil Eco-Remediation, Nanjing, China
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, China
| | - Xinying Li
- School of Environment, Nanjing Normal University, Nanjing, China
| | - Shoucheng Ma
- School of Environment, Nanjing Normal University, Nanjing, China
| | - Wei Wei
- School of Environment, Nanjing Normal University, Nanjing, China
- Jiangsu Province Engineering Research Center of Environmental Risk Prevention and Emergency Response Technology, Jiangsu Engineering Lab of Water and Soil Eco-Remediation, Nanjing, China
- Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing, China
- Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control, Shenzhen, China
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Vengatesan MR, Alhseinat E, Arangadi AF, Anwer S, Kannangara YY, Song JK, Banat F. Ag-doped sepiolite intercalated graphene nanostructure for hybrid capacitive deionization system. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.115799] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Enhanced Potential Toxic Metal Removal Using a Novel Hierarchical SiO2–Mg(OH)2 Nanocomposite Derived from Sepiolite. MINERALS 2019. [DOI: 10.3390/min9050298] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Clays are widely used as sorbents for heavy metals due to their high specific surface areas, low cost, and ubiquitous occurrence in most soil and sediment environments. However, the low loading capacity for heavy metals is one of their inherent limitations. In this work, a novel SiO2–Mg(OH)2 nanocomposite was successfully prepared via sequential acid–base modification of raw sepiolite. The structural characteristics of the resulting modified samples were characterized by a wide range of techniques including field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), and nitrogen physisorption analysis. The results show that a hierarchical nanocomposite constructed by loading the Mg(OH)2 nanosheets onto amorphous SiO2 nanotubes can be successfully prepared, and the nanocomposite has a high surface area (377.3 m2/g) and pore volume (0.96 cm3/g). Batch removal experiments indicate that the nanocomposite exhibits high removal efficiency toward Gd(III), Pb(II), and Cd(II), and their removal capacities were greatly enhanced in comparison with raw sepiolite, due to the synergistic effect of the different components in the hierarchical nanocomposite. This work can provide a novel route toward a hierarchical nanocomposite by using clay minerals as raw material. Taking into account the simplicity of the fabrication route and the high loading capacities for heavy metals, the developed nanocomposite also has great potential applications in water treatment.
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Aranda P, Ruiz-Hitzky E. Immobilization of Nanoparticles on Fibrous Clay Surfaces: Towards Promising Nanoplatforms for Advanced Functional Applications. CHEM REC 2018; 18:1125-1137. [DOI: 10.1002/tcr.201700113] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 02/21/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Pilar Aranda
- Instituto de Ciencia de Materiales de Madrid; CSIC; c/ Sor Juana Inés de la Cruz 3 28049 Madrid Spain
| | - Eduardo Ruiz-Hitzky
- Instituto de Ciencia de Materiales de Madrid; CSIC; c/ Sor Juana Inés de la Cruz 3 28049 Madrid Spain
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