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Bahamon D, Vega LF. Molecular simulations of phenol and ibuprofen removal from water using multilayered graphene oxide membranes. Mol Phys 2019. [DOI: 10.1080/00268976.2019.1662129] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- D. Bahamon
- Chemical Engineering Department, Khalifa University, Abu Dhabi, UAE
- Research and Innovation Center on CO2 and H2 (RICH), Catalysis and Separation Center (CeCaS), Khalifa University, Abu Dhabi, UAE
| | - L. F. Vega
- Chemical Engineering Department, Khalifa University, Abu Dhabi, UAE
- Research and Innovation Center on CO2 and H2 (RICH), Catalysis and Separation Center (CeCaS), Khalifa University, Abu Dhabi, UAE
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Ferino-Pérez A, Gamboa-Carballo JJ, Li Z, Campos LC, Jáuregui-Haza U. Explaining the interactions between metaldehyde and acidic surface groups of activated carbon under different pH conditions. J Mol Graph Model 2019; 90:94-103. [PMID: 31035099 DOI: 10.1016/j.jmgm.2019.04.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 03/30/2019] [Accepted: 04/11/2019] [Indexed: 10/27/2022]
Abstract
Metaldehyde (MA) is an organic compound widely used in agriculture all around the world as molluscicide. There are growing concerns that relatively high levels of MA have been detected in surface water, which could be ascribed to the fact that it is transparent to common wastewater treatment processes. A theoretical study of the influence of activated carbon (AC) surface groups (SGs) on MA adsorption is done in order to help to understand the process and to evaluate the influence of the acid SGs over the adsorption in AC filters. Multiple Minima Hypersurface methodology was employed in order to study the interactions of the MA with acid SGs (hydroxyl and carboxyl) at acidic and neutral pH, and at different hydration conditions explicitly taking into account the solvent influence. Selected structures were re-optimized using Density Functional Theory and posteriorly refined to achieve a well-defined electron density to characterize the interactions by the Quantum Theory of Atoms in Molecules approach. The obtained results showed that the presence of SGs enhances the adsorption process. The deprotonated carboxyl and hydroxyl SGs of AC models show the strongest interactions, suggesting greater adsorption at neutral pH which is in concordance with experimental data. The main interactions are of a dispersive nature between the pesticide and the π-cloud of the AC and hydrogen bonds between the MA and the acid SGs suggesting that the adsorption process is driven by a physisorption mechanism. Water acts as an intermediary between the AC and MA and competing with it for the adsorption sites.
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Affiliation(s)
- Anthuan Ferino-Pérez
- Instituto Superior de Tecnologías y Ciencias Aplicadas (InSTEC), Universidad de La Habana, La Habana, CP 10600, Cuba
| | - Juan José Gamboa-Carballo
- Instituto Superior de Tecnologías y Ciencias Aplicadas (InSTEC), Universidad de La Habana, La Habana, CP 10600, Cuba
| | - Zhuojun Li
- Department of Civil, Environmental and Geomatic Engineering, University College London, Gower Street, London, WC1E 6BT, UK
| | - Luiza C Campos
- Department of Civil, Environmental and Geomatic Engineering, University College London, Gower Street, London, WC1E 6BT, UK.
| | - Ulises Jáuregui-Haza
- Instituto Superior de Tecnologías y Ciencias Aplicadas (InSTEC), Universidad de La Habana, La Habana, CP 10600, Cuba; Instituto Tecnológico de Santo Domingo (INTEC), Área de Ciencias Básicas y Ambientales, Ave. de los Próceres, Santo Domingo, Dominican Republic.
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Liu A, Jain SK, Jin Q, Peng X. Adsorption and structure of benzene confined in disordered porous carbons: effect of pore heterogeneity and surface chemistry. MOLECULAR SIMULATION 2018. [DOI: 10.1080/08927022.2018.1496249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Anqi Liu
- Center for Safety, Environmental & Energy Conservation Technology, China University of Petroleum, Beijing, People’s Republic of China
- CNPC Research Institute of Safety and Environment Technology, Beijing, People’s Republic of China
| | - Surendra Kumar Jain
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur, India
| | - Qibing Jin
- College of Information Science and Technology, Beijing University of Chemical Technology, Beijing, People’s Republic of China
| | - Xuan Peng
- College of Information Science and Technology, Beijing University of Chemical Technology, Beijing, People’s Republic of China
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Melchor-Rodríguez K, Gamboa-Carballo JJ, Ferino-Pérez A, Passé-Coutrin N, Gaspard S, Jáuregui-Haza UJ. Theoretical study on the interactions between chlordecone hydrate and acidic surface groups of activated carbon under basic pH conditions. J Mol Graph Model 2018; 81:146-154. [PMID: 29554491 DOI: 10.1016/j.jmgm.2018.02.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 02/21/2018] [Accepted: 02/27/2018] [Indexed: 11/24/2022]
Abstract
A theoretical study of the influence of acidic surface groups (SG) of activated carbon (AC) on chlordecone hydrate (CLDh) adsorption is presented, in order to help understanding the adsorption process under basic pH conditions. A seven rings aromatic system (coronene) with a functional group in the edge was used as a simplified model of AC to evaluate the influence of SG in the course of adsorption from aqueous solution at basic pH conditions. Two SG were modeled in their deprotonated form: carboxyl and hydroxyl (COO- and O-), interacting with CLDh. In order to model the solvation process, all systems under study were calculated with up to three water molecules. Multiple Minima Hypersurface (MMH) methodology was employed to study the interactions of CLDh with SG on AC using PM7 semiempirical Hamiltonian, to explore the potential energy surfaces of the systems and evaluate their thermodynamic association energies. The re-optimization of representative structures obtained from MMH was done using M06-2X Density Functional Theory. The Quantum Theory of Atoms in Molecules (QTAIM) was used to characterize the interaction types. As result, the association of CLDh with acidic SG at basic pH conditions preferentially occurs between the two alcohol groups of CLDh with COO- and O- groups and by dispersive interactions of chlorine atoms of CLDh with the graphitic surface. On the other hand, the presence of covalent interactions between the negatively charged oxygen of SG and one hydrogen atom of CLDh alcohol groups (O-⋯HO interactions) without water molecules, was confirmed by QTAIM study. It can be concluded that the interactions of CLDh with acidic SG of AC under basic pH conditions confirms the physical mechanisms of adsorption process.
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Affiliation(s)
- Kenia Melchor-Rodríguez
- Instituto Superior de Tecnologías y Ciencias Aplicadas, University of Havana, Avenida Salvador Allende, 1110, Quinta de los Molinos, Plaza de la Revolución, A.P. 6163, La Habana, Cuba
| | - Juan José Gamboa-Carballo
- Instituto Superior de Tecnologías y Ciencias Aplicadas, University of Havana, Avenida Salvador Allende, 1110, Quinta de los Molinos, Plaza de la Revolución, A.P. 6163, La Habana, Cuba
| | - Anthuan Ferino-Pérez
- Instituto Superior de Tecnologías y Ciencias Aplicadas, University of Havana, Avenida Salvador Allende, 1110, Quinta de los Molinos, Plaza de la Revolución, A.P. 6163, La Habana, Cuba
| | - Nady Passé-Coutrin
- Laboratoire COVACHIM M2E, EA 3592, Université des Antilles, BP 250, 97157, Pointe à Pitre Cedex, Guadeloupe
| | - Sarra Gaspard
- Laboratoire COVACHIM M2E, EA 3592, Université des Antilles, BP 250, 97157, Pointe à Pitre Cedex, Guadeloupe
| | - Ulises Javier Jáuregui-Haza
- Instituto Superior de Tecnologías y Ciencias Aplicadas, University of Havana, Avenida Salvador Allende, 1110, Quinta de los Molinos, Plaza de la Revolución, A.P. 6163, La Habana, Cuba.
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Grishchenko LM, Diyuk VE, Konoplitska OP, Lisnyak VV, Maryichuk RT. Modeling of copper ions adsorption onto oxidative-modified activated carbons. ADSORPT SCI TECHNOL 2017. [DOI: 10.1177/0263617417729236] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
| | - VE Diyuk
- Taras Shevchenko National University of Kyiv,
Ukraine
| | | | - VV Lisnyak
- Taras Shevchenko National University of Kyiv,
Ukraine
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Computational study of ibuprofen removal from water by adsorption in realistic activated carbons. J Colloid Interface Sci 2017; 498:323-334. [DOI: 10.1016/j.jcis.2017.03.068] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 03/11/2017] [Accepted: 03/15/2017] [Indexed: 11/22/2022]
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Theoretical study of chlordecone and surface groups interaction in an activated carbon model under acidic and neutral conditions. J Mol Graph Model 2016; 65:83-93. [PMID: 26945637 DOI: 10.1016/j.jmgm.2016.02.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 01/27/2016] [Accepted: 02/19/2016] [Indexed: 11/24/2022]
Abstract
Activated carbons (ACs) are widely used in the purification of drinking water without almost any knowledge about the adsorption mechanisms of the persistent organic pollutants. Chlordecone (CLD, Kepone) is an organochlorinated synthetic compound that has been used mainly as agricultural insecticide. CLD has been identified and listed as a persistent organic pollutant by the Stockholm Convention. The selection of the best suited AC for this type of contaminants is mainly an empirical and costly process. A theoretical study of the influence of AC surface groups (SGs) on CLD adsorption is done in order to help understanding the process. This may provide a first selection criteria for the preparation of AC with suitable surface properties. A model of AC consisting of a seven membered ring graphene sheet (coronene) with a functional group on the edge was used to evaluate the influence of the SGs over the adsorption. Multiple Minima Hypersurface methodology (MMH) coupled with PM7 semiempirical Hamiltonian was employed in order to study the interactions of the chlordecone with SGs (hydroxyl and carboxyl) at acidic and neutral pH and different hydration conditions. Selected structures were re-optimized using CAM-B3LYP to achieve a well-defined electron density to characterize the interactions by the Quantum Theory of Atoms in Molecules approach. The deprotonated form of surface carboxyl and hydroxyl groups of AC models show the strongest interactions, suggesting a chemical adsorption. An increase in carboxylic SGs content is proposed to enhance CLD adsorption onto AC at neutral pH conditions.
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Huang Y, Cannon FS, Guo J, Watson JK, Mathews JP. Atomistic modelling insight into the structure of lignite-based activated carbon and benzene sorption behavior. RSC Adv 2016. [DOI: 10.1039/c6ra07533a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Improved structure–property relationships for activated carbon were obtained by devising realistic, large-scale, structural models.
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Affiliation(s)
- Yang Huang
- College of Urban Construction and Environmental Engineering
- Chongqing University
- Chongqing 400045
- China
- Department of Civil and Environmental Engineering
| | - Fred S. Cannon
- Department of Civil and Environmental Engineering
- The Pennsylvania State University
- University Park
- USA
| | - Jinsong Guo
- College of Urban Construction and Environmental Engineering
- Chongqing University
- Chongqing 400045
- China
- Chongqing Institute of Green and Intelligent Technology
| | - Justin K. Watson
- The Applied Research Laboratory
- The Pennsylvania State University
- University Park
- USA
| | - Jonathan P. Mathews
- The EMS Energy Institute
- The Leone Family Department of Energy and Mineral Engineering
- The Pennsylvania State University
- University Park
- USA
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Interaction of paracetamol and 125I-paracetamol with surface groups of activated carbon: theoretical and experimental study. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-015-4022-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Enriquez-Victorero C, Hernández-Valdés D, Montero-Alejo AL, Durimel A, Gaspard S, Jáuregui-Haza U. Theoretical study of γ-hexachlorocyclohexane and β-hexachlorocyclohexane isomers interaction with surface groups of activated carbon model. J Mol Graph Model 2014; 51:137-48. [PMID: 24907933 DOI: 10.1016/j.jmgm.2014.05.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 05/14/2014] [Accepted: 05/15/2014] [Indexed: 10/25/2022]
Abstract
Activated carbon (AC) is employed in drinking water purification without almost any knowledge about the adsorption mechanism of persistent organic pollutants (POPs) onto it. Hexachlorocyclohexane (HCH) is an organochlorinated contaminant present in water and soils of banana crops production zones of the Caribbean. The most relevant isomers of HCH are γ-HCH and β-HCH, both with great environmental persistence. A theoretical study of the influence of AC surface groups (SGs) on HCH adsorption is done in order to help to understand the process and may lead to improve the AC selection process. A simplified AC model consisting of naphthalene with a functional group was used to assess the influence of SGs over the adsorption process. The Multiple Minima Hypersurface (MMH) methodology was employed to study γ-HCH and β-HCH interactions with different AC SGs (hydroxyl and carboxyl) under different hydration and pH conditions. The results obtained showed that association of HCH with SGs preferentially occurs between the axial protons of HCH and SG's oxygen atom, and the most favorable interactions occurring with charged SGs. An increase in carboxylic SGs content is proposed to enhance HCH adsorption onto AC under neutral pH conditions. Finally, this work presents an inexpensive computer aided methodology for preselecting activated carbon SGs content for the removal of a given compound.
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Affiliation(s)
| | | | - Ana Lilian Montero-Alejo
- Laboratorio de Química Computacional y Teórica, Facultad de Química, Universidad de La Habana, 10400 La Habana, Cuba.
| | - Axelle Durimel
- Laboratoire COVACHIM M2E, EA 3592, Université des Antilles et de la Guyane, BP 250, 97157 Pointe à Pitre Cedex, Guadeloupe.
| | - Sarra Gaspard
- Laboratoire COVACHIM M2E, EA 3592, Université des Antilles et de la Guyane, BP 250, 97157 Pointe à Pitre Cedex, Guadeloupe.
| | - Ulises Jáuregui-Haza
- Instituto Superior de Tecnología y Ciencias Aplicadas, La Habana, A.P. 6163, Cuba.
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Terzyk AP, Pacholczyk A, Wiśniewski M, Gauden PA. Enhanced adsorption of paracetamol on closed carbon nanotubes by formation of nanoaggregates: carbon nanotubes as potential materials in hot-melt drug deposition-experiment and simulation. J Colloid Interface Sci 2012; 376:209-16. [PMID: 22459025 DOI: 10.1016/j.jcis.2012.03.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Revised: 02/29/2012] [Accepted: 03/01/2012] [Indexed: 11/29/2022]
Abstract
We present the new results of systematic studies of paracetamol adsorption on closed, commercially available, unmodified carbon nanotubes. The results of thermal analysis, static adsorption measurements and the comparison with phenol adsorption data lead to suggestion that the formation of paracetamol nanoaggregates in the interstitial spaces between nanotubes occurs. This effect is also confirmed by the results of (performed in two ways) independent dynamic measurements and by molecular dynamics simulation technique. Next, we show that the behavior of adsorbed paracetamol during heating leads to the creation of a new drug delivery system. The properties of this system depend on the type of applied nanotubes and the parameters of the process called hot-melt drug deposition. Thus, we conclude that confined nanoaggregate formation, as well as hot-melt deposition should be promising effects in the preparation of highly effective, new drug delivery systems.
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Affiliation(s)
- Artur P Terzyk
- N. Copernicus University, Department of Chemistry, Physicochemistry of Carbon Materials Research Group, Gagarin Street 7, 87-100 Toruń, Poland.
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