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Ahmad T, Iqbal J, Bustam MA, Babar M, Tahir MB, Sagir M, Irfan M, Anwaar Asghar HM, Hassan A, Riaz A, Chuah LF, Bokhari A, Mubashir M, Show PL. Performance evaluation of phosphonium based deep eutectic solvents coated cerium oxide nanoparticles for CO 2 capture. ENVIRONMENTAL RESEARCH 2023; 222:115314. [PMID: 36738770 DOI: 10.1016/j.envres.2023.115314] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 10/23/2022] [Accepted: 01/14/2023] [Indexed: 06/18/2023]
Abstract
The critical challenge being faced by our current modern society on a global scale is to reduce the surging effects of climate change and global warming, being caused by anthropogenic emissions of CO2 in the environment. Present study reports the surface driven adsorption potential of deep eutectic solvents (DESs) surface functionalized cerium oxide nanoparticles (CeNPs) for low pressure CO2 separation. The phosphonium based DESs were prepared using tetra butyl phosphoniumbromide as hydrogen bond acceptor (HBA) and 6 acids as hydrogen bond donors (HBDs). The as-developed DESs were characterized and employed for the surface functionalization of CeNPs with their subsequent utilization in adsorption-based CO2 adsorption. The synthesis of as-prepared DESs was confirmed through FTIR measurements and absence of precipitates, revealed through visual observations. It was found that DES6 surface functionalized CeNPs demonstrated 27% higher adsorption performance for CO2 capturing. On the contrary, DES3 coated CeNPs exhibited the least adsorption progress for CO2 separation. The higher adsorption performance associated with DES6 coated CeNPs was due to enhanced surface affinity with CO2 molecules that must have facilitated the mass transport characteristics and resulted an enhancement in CO2 adsorption performance. Carboxylic groups could have generated an electric field inside the pores to attract more polarizable adsorbates including CO2, are responsible for the relatively high values of CO2 adsorption. The quadruple movement of the CO2 molecules with the electron-deficient and pluralizable nature led to the enhancement of the interactive forces between the CO2 molecules and the CeNPs decorated with the carboxylic group hydrogen bond donor rich DES. The current findings may disclose the new research horizons and theoretical guidance for reduction in the environmental effects associated with uncontrolled CO2 emission via employing DES surface coated potential CeNPs.
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Affiliation(s)
- Tausif Ahmad
- Institute of Chemical & Environmental Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahimyar Khan, 64200, Pakistan
| | - Jibran Iqbal
- College of Natural and Health Sciences, Zayed University, P.O. Box 144534, Abu Dhabi, United Arab Emirates.
| | | | - Muhammad Babar
- Institute of Chemical & Environmental Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahimyar Khan, 64200, Pakistan
| | - Muhammad Bilal Tahir
- Institute of Physics, Khwaja Fareed University of Engineering and Information Technology, Rahimyar Khan, 64200, Pakistan
| | - Muhammad Sagir
- Institute of Chemical & Environmental Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahimyar Khan, 64200, Pakistan
| | - Muhammad Irfan
- Pakistan Council of Scientific and Industrial Research (PCSIR), Lahore, Pakistan
| | | | - Afaq Hassan
- Institute of Chemical & Environmental Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahimyar Khan, 64200, Pakistan
| | - Asim Riaz
- Institute of Chemical & Environmental Engineering, Khwaja Fareed University of Engineering and Information Technology, Rahimyar Khan, 64200, Pakistan
| | - Lai Fatt Chuah
- Faculty of Maritime Studies, Universiti Malaysia Terengganu, Terengganu, Malaysia.
| | - Awais Bokhari
- Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, 54000, Pakistan.
| | - Muhammad Mubashir
- Department of Petroleum Engineering, School of Engineering, Asia Pacific University of Technology and Innovation, 57000, Kuala Lumpur, Malaysia.
| | - Pau Loke Show
- Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou, 325035, China; Department of Chemical Engineering, Khalifa University, Shakhbout Bin Sultan St - Zone 1, Abu Dhabi, United Arab Emirates; Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor Darul Ehsan, Malaysia; Department of Sustainable Engineering, Saveetha School of Engineering, SIMATS, Chennai, 602105, India.
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Adsorption of 1,2-Dichlorobenzene from the Aqueous Phase onto Activated Carbons and Modified Carbon Nanotubes. Int J Mol Sci 2021; 22:ijms222313152. [PMID: 34884956 PMCID: PMC8658343 DOI: 10.3390/ijms222313152] [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: 11/10/2021] [Revised: 11/29/2021] [Accepted: 12/03/2021] [Indexed: 11/17/2022] Open
Abstract
This study aimed to describe the adsorption process of ortho-dichlorobenzene (o-DCB) onto activated carbons (ACs) and modified carbon nanotubes (CNTs) from the aqueous phase. The starting material NC_7000 carbon nanotubes were modified by chlorination (NC_C) and then by the introduction of hydroxyl groups (NC_C_B). The concentration of o-DCB in solutions was performed by UV-VIS spectrophotometry. After adsorption, the activated carbons were regenerated by extraction with organic solvents such as acetone, methanol, ethanol, and 1-propanol; the carbon nanotubes were regenerated by methanol. The degree of adsorbate recovery was determined by gas chromatography (GC) with flame ionization detection, using ethylbenzene as an internal standard. The equilibrium isotherm data of adsorption were satisfactorily fitted by the Langmuir equations. The results indicate that carbon adsorbents are effective porous materials for removing o-DCB from the aqueous phase. Additionally, activated carbons are more regenerative adsorbents than carbon nanotubes. The recoveries of o-DCB from ACs were in the range of 76–85%, whereas the recoveries from CNTs were in the range of 23–46%. Modifications of CNTs affect the improvement of their adsorption properties towards o-DCB compared to unmodified CNTs. However, the introduction of new functional groups on carbon nanotube surfaces makes the regeneration process less effective.
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Water Purification of Classical and Emerging Organic Pollutants: An Extensive Review. CHEMENGINEERING 2021. [DOI: 10.3390/chemengineering5030047] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The main techniques used for organic pollutant removal from water are adsorption, reductive and oxidative processes, phytoremediation, bioremediation, separation by membranes and liquid–liquid extraction. In this review, strengths and weaknesses of the different purification techniques are discussed, with particular attention to the newest results published in the scientific literature. This study highlighted that adsorption is the most frequently used method for water purification, since it can balance high organic pollutants removal efficiency, it has the possibility to treat a large quantity of water in semi-continuous way and has acceptable costs.
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Kouotou D, Ghalit M, Ndi JN, Martinez LMP, Ouahabi ME, Ketcha JM, Gharibi EK. Removal of metallic trace elements (Pb 2+, Cd 2+, Cu 2+, and Ni 2+) from aqueous solution by adsorption onto cerium oxide modified activated carbon. ENVIRONMENTAL MONITORING AND ASSESSMENT 2021; 193:467. [PMID: 34224011 DOI: 10.1007/s10661-021-09267-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 06/28/2021] [Indexed: 06/13/2023]
Abstract
The equilibrium and kinetic studies of removal of Pb2+, Cd2+, Ni2+, and Cu2+ metal ions were carried out using activated carbon prepared from palm kernel shell and doped with CeO2 (Ce/AC). The obtained material carbon was characterized by XRD which showed some crystalline traces of CeO2, SEM displaying the porous texture with spherical pores and the determination of pH of point of zero charge (pHPZC) which was found to be equal to 6. The contact time and adsorbate were thoroughly investigated. The maximum adsorption depends inversely on the hydrated metal radius. This observation was confirmed by calculating the formation energies (ΔH(M(OH)2)) of M(OH)2. The metal ionic radii were acting on calculated sorption capacity and that sorption efficiency related to ionic radii of metal was as follows: R(Ni2+) ≤ R(Cd2+) < R(Cu2+) < R(Pb2+). The texture and morphology of the material after sorption were affected by the metallic ion nature as observed by SEM. The kinetic studies showed that the rate constant (k2) of pseudo-second-order model decreased with the increase of the hydrated cations radii, while the rate constant of intraparticle diffusion increased with the increase of the ionic radii. The Freundlich isotherm model best fit the experimental sorption data for all the metallic ions.
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Affiliation(s)
- Daouda Kouotou
- Applied Physical and Analytical Chemistry Laboratory, Department of Inorganic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
- Solid Mineral Chemistry, Applied Chemistry and Environment Laboratory, Faculty of Sciences, Mohammed First University, Oujda, Morocco
| | - Mohammed Ghalit
- Solid Mineral Chemistry, Applied Chemistry and Environment Laboratory, Faculty of Sciences, Mohammed First University, Oujda, Morocco
| | - Julius Nsami Ndi
- Applied Physical and Analytical Chemistry Laboratory, Department of Inorganic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
| | - Luisa M Pastrana Martinez
- Carbon Materials Research Group, Department of Inorganic Chemistry, Faculty of Sciences, University of Granada, Granada, Spain
| | - Meriam El Ouahabi
- Géochimie Et Environnement Sédimentaires (AGEs), Département de Géologie, UR Argile, University of Liège, Liège, Belgium
| | - Joseph Mbadcam Ketcha
- Applied Physical and Analytical Chemistry Laboratory, Department of Inorganic Chemistry, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
| | - El Khadir Gharibi
- Solid Mineral Chemistry, Applied Chemistry and Environment Laboratory, Faculty of Sciences, Mohammed First University, Oujda, Morocco.
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Dardouri S, Jedidi A, Mejri S, Hattab S, Sghaier J. Morphological effect of dichloromethane on alfalfa ( Medicago sativa) cultivated in soil amended with fertilizer manures. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2020; 23:263-271. [PMID: 32851853 DOI: 10.1080/15226514.2020.1810205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this work, we investigated the morphological effect of dichloromethane (DCM) on alfalfa (Medicago sativa) plant. We studied in vitro the influence of its concentration on alfalfa germination. The plants were placed in pots for 15 weeks, and exposed to increasing concentrations of DCM (50 µg L-1 and 84 mg L-1). In addition, we examined the effect of two manures (cow and sheep), which were applied to a contaminated soil, on alfalfa plant growth. The effect of the presence of dichloromethane is obvious even in plant-soil manure system. In fact, in the event of contamination, the soil-cow manure mixture represents the best setting medium for the Alfalfa plant compared to other environments, regardless of the contamination level. Indeed, the presence of two types of manure does not allow the suppression of the inhibitory effect of dichloromethane on the mass of the dry matter of the aerial part which is 18.38% for the cow manure-amended soil and 13.96% for the sheep manure-amended soil.
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Affiliation(s)
- Sana Dardouri
- Laboratory of Thermal and Thermodynamics in Industrial Processes, National Engineering School of Monastir, Monastir, Tunisia
| | - Asma Jedidi
- Laboratory of Thermal and Thermodynamics in Industrial Processes, National Engineering School of Monastir, Monastir, Tunisia
| | - Sabrine Mejri
- Integrated Devices and Systems, Faculty of Electrical Engineering, Mathematical and Computer Science, University of Twente, the Netherlands
| | - Sabrine Hattab
- Regional Research Centre on Horticulture and Organic Agriculture, Chott-Mariem, Sousse, Tunisia
| | - Jalila Sghaier
- Laboratory of Thermal and Thermodynamics in Industrial Processes, National Engineering School of Monastir, Monastir, Tunisia
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Hyldegaard BH, Ottosen LM, Alshawabkeh AN. Transformation of tetrachloroethylene in a flow-through electrochemical reactor. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 707:135566. [PMID: 31767295 PMCID: PMC6980996 DOI: 10.1016/j.scitotenv.2019.135566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 11/04/2019] [Accepted: 11/15/2019] [Indexed: 06/10/2023]
Abstract
Electrochemical transformation of harmful tetrachloroethylene (PCE) is evaluated as a method for management of groundwater plumes to protect the drinking water resource, its consumers and the environment. In contrast to previous work that reported transformation of trichloroethylene, a byproduct of PCE, this work focuses on transformation of PCE in a saturated porous matrix and the influence of design parameters on the removal performance. Design parameters investigated were electrode configuration, catalyst load, electrode spacing, current intensity, orientation of reactor and flow through a porous matrix. A removal of 86% was reached in the fully liquid-filled, horizontally oriented reactor at a current of 120 mA across a cathode → bipolar electrode → anode arrangement with a Darcy velocity of 0.03 cm/min (150 m/yr). The palladium load on the cathode significantly influenced the removal. Enhanced removal was observed with increased electrode spacing. Presence of an inert porous matrix improved PCE removal by 9%-point compared to a completely liquid-filled reactor. Normalization of the data indicated, that a higher charge transfer per contaminant mass is required for removal of low PCE concentrations. No chlorinated intermediates were formed. The results suggest, that PCE can be electrochemically transformed in reactor designs replicating that of a potential field-implementation. Further work is required to better understand the reduction and oxidation processes established and the parameters influencing such. This knowledge is essential for optimization towards testing in complex conditions and variations of contaminated sites.
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Affiliation(s)
- Bente H Hyldegaard
- Department of Waste & Contaminated Sites, COWI, Parallelvej 2, 2800 Kgs. Lyngby, Denmark; Department of Civil Engineering, Brovej, Building 118, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark; Department of Civil & Environmental Engineering, 501 Stearns, 360 Huntington Avenue, Boston, MA 02115, United States of America.
| | - Lisbeth M Ottosen
- Department of Civil Engineering, Brovej, Building 118, Technical University of Denmark, 2800 Kgs. Lyngby, Denmark
| | - Akram N Alshawabkeh
- Department of Civil & Environmental Engineering, 501 Stearns, 360 Huntington Avenue, Boston, MA 02115, United States of America
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Adeyinka GC, Moodley B. Kinetic and thermodynamic studies on partitioning of polychlorinated biphenyls (PCBs) between aqueous solution and modeled individual soil particle grain sizes. J Environ Sci (China) 2019; 76:100-110. [PMID: 30528001 DOI: 10.1016/j.jes.2018.04.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 04/03/2018] [Accepted: 04/04/2018] [Indexed: 06/09/2023]
Abstract
The significance of soil mineral properties and secondary environmental conditions such as pH, temperature, ionic strength and time in the partitioning of eight selected polychlorinated biphenyl (PCB) congeners between aqueous solution and soil particles with different grain sizes was studied. The mineral properties of a model soil sample were determined, and Brunauer-Emmett-Teller (BET) adsorption-desorption isotherms were employed to observe the surface characteristics of the individual modeled soil particles. Batch adsorption experiments were conducted to determine the sorption of PCBs onto soil particles of different sizes. The results revealed that the sorption of PCB congeners onto the soil was dependent on the amount of soil organic matter, surface area, and pore size distribution of the various individual soil particles. Low pH favored the sorption of PCBs, with maximum sorption occurring between pH6.5 and 7.5 with an equilibration period of 8hr. Changes in the ionic strength were found to be less significant. Low temperature favored the sorption of PCBs onto the soil compared to high temperatures. Thermodynamic studies showed that the partition coefficient (Kd) decreased with increasing temperature, and negative and low values of ΔH° indicated an exothermic physisorption process. The data generated is critical and will help in further understanding remediation and cleanup strategies for polluted water.
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Affiliation(s)
- Gbadebo Clement Adeyinka
- School of Chemistry and Physics, College of Agriculture, Engineering and Sciences, University of KwaZulu-Natal, Private Bag X54001, 4000 Durban, South Africa
| | - Brenda Moodley
- School of Chemistry and Physics, College of Agriculture, Engineering and Sciences, University of KwaZulu-Natal, Private Bag X54001, 4000 Durban, South Africa.
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