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Daminescu D, Duteanu N, Ciopec M, Negrea A, Negrea P, Nemeş NS, Pascu B, Ianăşi C, Cotet L. Adsorption of Scandium Ions by Amberlite XAD7HP Polymeric Adsorbent Loaded with Tri-n-Octylphosphine Oxide. Molecules 2024; 29:1578. [PMID: 38611857 PMCID: PMC11013607 DOI: 10.3390/molecules29071578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/25/2024] [Accepted: 03/29/2024] [Indexed: 04/14/2024] Open
Abstract
In an actual economic context, the demand for scandium has grown due to its applications in top technologies. However, further development of new technologies will lead to an increase in the market for Sc related to such technologies. The present study aims to improve and upgrade existing technology in terms of efficient scandium recovery, proposing a new material with selective adsorptive properties for scandium recovery. To highlight the impregnation of Amberlite XAD7HP resin with tri-n-octylphosphine oxide extractant by the solvent-impregnated resin method, the obtained adsorbent material was characterized by physico-chemical techniques. Further, the specific surface of the adsorbent and the zero-point charge of the adsorbent surface have been determined. Different parameters, such as initial concentration, adsorbent amount, contact time, or temperature, have been studied. The initial pH effect was investigated when a maximum adsorption capacity of 31.84 mg g-1 was obtained at pH > 3, using 0.1 g of adsorbent and a contact time of 90 min and 298 K. An attempt was made to discuss and provide a clear representation of the studied adsorption process, proposing a specific mechanism for Sc(III) recovery from aqueous solutions through kinetic, thermodynamic, and equilibrium studies. Adsorption/desorption studies reveal that the prepared adsorbent material can be reused five times.
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Affiliation(s)
- Diana Daminescu
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timisoara, Victoriei Square, No. 2, 300006 Timisoara, Romania
| | - Narcis Duteanu
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timisoara, Victoriei Square, No. 2, 300006 Timisoara, Romania
| | - Mihaela Ciopec
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timisoara, Victoriei Square, No. 2, 300006 Timisoara, Romania
| | - Adina Negrea
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timisoara, Victoriei Square, No. 2, 300006 Timisoara, Romania
| | - Petru Negrea
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timisoara, Victoriei Square, No. 2, 300006 Timisoara, Romania
| | - Nicoleta Sorina Nemeş
- Renewable Energy Research Institute-ICER, Politehnica University of Timisoara, Gavril Musicescu Street, No. 138, 300774 Timisoara, Romania;
| | - Bogdan Pascu
- Renewable Energy Research Institute-ICER, Politehnica University of Timisoara, Gavril Musicescu Street, No. 138, 300774 Timisoara, Romania;
| | - Cătălin Ianăşi
- Coriolan Drăgulescu’ Institute of Chemistry, Bv. Mihai Viteazul, No. 24, 300223 Timisoara, Romania
| | - Lucian Cotet
- Alum, S.A, Isaccei Street No. 83, 820228 Tulcea, Romania;
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Putz AM, Ciopec M, Negrea A, Grad O, Ianăşi C, Ivankov OI, Milanović M, Stijepović I, Almásy L. Comparison of Structure and Adsorption Properties of Mesoporous Silica Functionalized with Aminopropyl Groups by the Co-Condensation and the Post Grafting Methods. MATERIALS 2021; 14:ma14030628. [PMID: 33573051 PMCID: PMC7866394 DOI: 10.3390/ma14030628] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/24/2021] [Accepted: 01/25/2021] [Indexed: 11/16/2022]
Abstract
The adsorptive potential has been evaluated for the aminopropyl functionalized mesoporous silica materials obtained by co-condensation and post grafting methods. Nitrogen sorption, small angle neutron and X-ray scattering (SANS and SAXS) demonstrated high surface area and well-ordered hexagonal pore structure suitable for applications as adsorbents of metals from waste waters. A comparison of Cr(VI) adsorption properties of the materials prepared by different functionalization methods has been performed. The obtained results demonstrated the adsorption capacity due to the affinity of the chromium ions to the amino groups, and showed that co-condensation of tetraethoxysilane (TEOS) and 3-aminopropyl triethoxysilane (APTES) resulted in higher metal sorption capacity of the materials compared to post-synthesis grafting of aminopropyl groups onto the mesoporous silica particles.
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Affiliation(s)
- Ana-Maria Putz
- ”Coriolan Drăgulescu” Institute of Chemistry, Bv. Mihai Viteazul, No.24, 300223 Timisoara, Romania;
- Correspondence: (A.-M.P.); (M.C.); (L.A.)
| | - Mihaela Ciopec
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timişoara, Piaţa Victoriei, No.2, Timişoara 300006, Romania; (A.N.); (O.G.)
- Correspondence: (A.-M.P.); (M.C.); (L.A.)
| | - Adina Negrea
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timişoara, Piaţa Victoriei, No.2, Timişoara 300006, Romania; (A.N.); (O.G.)
| | - Oana Grad
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University of Timişoara, Piaţa Victoriei, No.2, Timişoara 300006, Romania; (A.N.); (O.G.)
| | - Cătălin Ianăşi
- ”Coriolan Drăgulescu” Institute of Chemistry, Bv. Mihai Viteazul, No.24, 300223 Timisoara, Romania;
| | - Oleksandr I. Ivankov
- Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Joliot-Curie 6, 141980 Dubna, Russia;
| | - Marija Milanović
- Department of Materials Engineering, Faculty of Technology, University of Novi Sad, Bulevar Cara Lazara 1, 21102 Novi Sad, Serbia; (M.M.); (I.S.)
| | - Ivan Stijepović
- Department of Materials Engineering, Faculty of Technology, University of Novi Sad, Bulevar Cara Lazara 1, 21102 Novi Sad, Serbia; (M.M.); (I.S.)
| | - László Almásy
- Institute for Energy Security and Environmental Safety, Centre for Energy Research, Konkoly-Thege ut 29-33, 1121 Budapest, Hungary
- Correspondence: (A.-M.P.); (M.C.); (L.A.)
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Vancea C, Mihailescu M, Negrea A, Mosoarca G, Ciopec M, Duteanu N, Negrea P, Minzatu V. Batch and Fixed-Bed Column Studies on Palladium Recovery from Acidic Solution by Modified MgSiO 3. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17249500. [PMID: 33352975 PMCID: PMC7767141 DOI: 10.3390/ijerph17249500] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 12/12/2020] [Accepted: 12/16/2020] [Indexed: 11/16/2022]
Abstract
Effective recovery of palladium ions from acidic waste solutions is important due to palladium’s intensive usage as a catalyst for different industrial processes and to the high price paid for its production from natural resources. In this paper, we test the ability of a new adsorbent, MgSiO3 functionalized by impregnation with DL-cysteine (cys), for palladium ion recovery from waste solutions. The Brunauer–Emmett–Teller (BET) surface area analysis, Barrett–Joyner–Halenda (BJH) pore size and volume analysis, scanning electron microscopy (SEM), energy dispersive X-ray (EDX) spectroscopy and Fourier-Transformed Infrared (FTIR) spectroscopy have been performed to characterize this material. Firstly, the maximum adsorption capacity of the new obtained material, MgSiO3-cys, in batch, was studied. To establish the adsorption mechanism, the obtained experimental data were fitted using the Langmuir, Freundlich and Sips adsorption isotherms. Studies on the adsorption of palladium ions on the synthesized material were performed in a dynamic regime, in a fixed-bed column. The Pd(II) recovery mechanism in the dynamic column regime was established based on Bohart–Adams, Yoon–Nelson, Thomas, and Clark models. The obtained equilibrium adsorption capacity was 9.3 (mg g−1) in static regime (batch) and 3 (mg g−1) in dynamic regime (column). The models that best describe the Pd(II) recovery process for batch and column adsorption are Sips and Clark, respectively.
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Affiliation(s)
- Cosmin Vancea
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, 300223 Timisoara, Romania; (C.V.); (M.M.); (A.N.); (N.D.); (P.N.)
| | - Maria Mihailescu
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, 300223 Timisoara, Romania; (C.V.); (M.M.); (A.N.); (N.D.); (P.N.)
- Research Institute for Renewable Energy, Politehnica University Timisoara, 138 Musicescu Street, 300774 Timisoara, Romania;
| | - Adina Negrea
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, 300223 Timisoara, Romania; (C.V.); (M.M.); (A.N.); (N.D.); (P.N.)
| | - Giannin Mosoarca
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, 300223 Timisoara, Romania; (C.V.); (M.M.); (A.N.); (N.D.); (P.N.)
- Correspondence: (G.M.); (M.C.); Tel.: +40-256404185 (G.M.); +40-256404192 (M.C.)
| | - Mihaela Ciopec
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, 300223 Timisoara, Romania; (C.V.); (M.M.); (A.N.); (N.D.); (P.N.)
- Correspondence: (G.M.); (M.C.); Tel.: +40-256404185 (G.M.); +40-256404192 (M.C.)
| | - Narcis Duteanu
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, 300223 Timisoara, Romania; (C.V.); (M.M.); (A.N.); (N.D.); (P.N.)
| | - Petru Negrea
- Faculty of Industrial Chemistry and Environmental Engineering, Politehnica University Timisoara, 300223 Timisoara, Romania; (C.V.); (M.M.); (A.N.); (N.D.); (P.N.)
| | - Vasile Minzatu
- Research Institute for Renewable Energy, Politehnica University Timisoara, 138 Musicescu Street, 300774 Timisoara, Romania;
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Rahman N, Nasir M. Facile synthesis of thiosalicylic acid functionalized silica gel for effective removal of Cr(III): Equilibrium modeling, kinetic and thermodynamic studies. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.enmm.2020.100353] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Qiu J, Du X, Komarneni S, Wang H, Cheng X, Du Z. Preparation of polyacrylamide–montmorillonite nanocomposite and its application in Cr(III) adsorption. J Appl Polym Sci 2020. [DOI: 10.1002/app.49065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Jinghong Qiu
- Textile Institute, College of Biomass Science and Engineering, Sichuan University Chengdu People's Republic of China
| | - Xiaosheng Du
- Textile Institute, College of Biomass Science and Engineering, Sichuan University Chengdu People's Republic of China
| | - Sridhar Komarneni
- Materials Research Institute and Department of Ecosystem Science and Management, 204 Energy and the Environment LaboratoryPennsylvania State University Pennsylvania
| | - Haibo Wang
- Textile Institute, College of Biomass Science and Engineering, Sichuan University Chengdu People's Republic of China
| | - Xu Cheng
- Textile Institute, College of Biomass Science and Engineering, Sichuan University Chengdu People's Republic of China
| | - Zongliang Du
- Textile Institute, College of Biomass Science and Engineering, Sichuan University Chengdu People's Republic of China
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Ciopec M, Davidescu CM, Negrea A, Duţeanu N, Rusu G, Grad O, Negrea P. Amberlite XAD7 resin functionalized with crown ether and Fe(III) used for arsenic removal from water. PURE APPL CHEM 2018. [DOI: 10.1515/pac-2018-0607] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Water represents an essential resource for life and for all natural processes. Our existence and our economic activities are totally dependent on this precious resource. It is well known that into the developing countries the main resource of drinkable water is represented by underground waters, so their contamination with arsenic represents a real problem that needs to be solved. To solve the problem of arsenic water pollution, it was necessary to develop a series of chemical, physicochemical and biological methods to reduce arsenic concentrations from water. From all these methods, adsorption offers many advantages including simple and stable operation, easy handling of waste, absence of added reagents, compact facilities and generally lower operation cost. The goal of this paper is to study the sorption properties of a new adsorbent material prepared by impregnating Amberlite XAD7 resin with crown ether (dibenzo-18-crown-6 ether) and loaded with Fe(III) ions. Solvent impregnated resin (SIR) method was used for functionalization. Amberlite XAD7 resin functionalization was evidenced by energy dispersive X-ray analysis, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis and determination of specific surface by the Brunauer, Emmett and Teller (BET) analysis. Equilibrium, kinetic and thermodynamic studies were performed in order to determine the removal efficiency of the studied adsorbent for arsenic removal from water. In order to study the As(V) adsorption mechanism the experimental data were modelled using pseudo-first-order and pseudo-second order kinetic models. Kinetic of adsorption process was better described by pseudo-second-order model. Experimental data were fitted with three non-linear adsorption isotherm models: Langmuir, Freundlich and Sips. Obtained experimental data were better fitted by Sips adsorption isotherm. The values of thermodynamic parameters (ΔG°, ΔH°, ΔS°) showed that the adsorption process was endothermic and spontaneous. The results proved that Amberlite XAD7 resin with crown ether and loaded with Fe(III) is an efficient adsorbent for the As(V) removal from water. The possibility of reuse the adsorbent material through adsorption and desorption cycles was also studied and it was found that the material can be used in five sorption-desorption cycles. Maximum adsorption capacity obtained experimentally being 18.8 μg As(V)/g material.
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Affiliation(s)
- Mihaela Ciopec
- Politehnica University of Timişoara, Faculty of Industrial Chemistry and Environmental Engineering , 2 Piata Victoriei , RO 300006 Timisoara , Romania
| | - Corneliu Mircea Davidescu
- Politehnica University of Timişoara, Faculty of Industrial Chemistry and Environmental Engineering , 2 Piata Victoriei , RO 300006 Timisoara , Romania
| | - Adina Negrea
- Politehnica University of Timişoara, Faculty of Industrial Chemistry and Environmental Engineering , 2 Piata Victoriei , RO 300006 Timisoara , Romania
| | - Narcis Duţeanu
- Politehnica University of Timişoara, Faculty of Industrial Chemistry and Environmental Engineering , 2 Piata Victoriei , RO 300006 Timisoara , Romania
| | - Gerlinde Rusu
- Politehnica University of Timişoara, Faculty of Industrial Chemistry and Environmental Engineering , 2 Piata Victoriei , RO 300006 Timisoara , Romania
| | - Oana Grad
- Politehnica University of Timişoara, Faculty of Industrial Chemistry and Environmental Engineering , 2 Piata Victoriei , RO 300006 Timisoara , Romania
| | - Petru Negrea
- Politehnica University of Timişoara, Faculty of Industrial Chemistry and Environmental Engineering , 2 Piata Victoriei , RO 300006 Timisoara , Romania
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