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González-Rodríguez J, Conde JJ, Vargas-Osorio Z, Vázquez-Vázquez C, Piñeiro Y, Rivas J, Feijoo G, Moreira MT. LED-driven photo-Fenton process for micropollutant removal by nanostructured magnetite anchored in mesoporous silica. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 349:119461. [PMID: 37922820 DOI: 10.1016/j.jenvman.2023.119461] [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: 07/20/2023] [Revised: 10/20/2023] [Accepted: 10/21/2023] [Indexed: 11/07/2023]
Abstract
The presence of organic micropollutants in water bodies represents a threat to living organisms and ecosystems due to their toxicological effects and recalcitrance in conventional wastewater treatments. In this context, the application of heterogeneous photo-Fenton based on magnetite nanoparticles supported on mesoporous silica (SBA15) is proposed to carry out the non-specific degradation of the model compounds ibuprofen, carbamazepine, hormones, bisphenol A and the dye ProcionRed®. The operating conditions (i.e., pH, catalyst load and hydrogen peroxide concentration) were optimized by Response Surface Methodology (RSM). The paramagnetic properties of the nanocatalysts allowed their repeated use in sequential batch operations with catalyst losses below 1%. The feasibility of the process was demonstrated as removal rates above 90% after twelve accomplished after twelve consecutive cycles. In addition, the contributions of different reactive oxygen species, mainly •OH, were analyzed together with the formation of by-products, achieving total mineralization values of 15% on average.
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Affiliation(s)
- J González-Rodríguez
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain.
| | - J J Conde
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Z Vargas-Osorio
- Department of Biomaterials, Centre for Functional and Surface Functionalized Glass (FUNGLASS), Alexander Dubcek University of Trencin, Slovakia; Laboratory of Magnetism and Nanotechnology, Department of Physical Chemistry, Faculty of Chemistry, and Applied Physics, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - C Vázquez-Vázquez
- Laboratory of Magnetism and Nanotechnology, Department of Physical Chemistry, Faculty of Chemistry, and Applied Physics, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Y Piñeiro
- Laboratory of Magnetism and Nanotechnology, Department of Physical Chemistry, Faculty of Chemistry, and Applied Physics, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - J Rivas
- Laboratory of Magnetism and Nanotechnology, Department of Physical Chemistry, Faculty of Chemistry, and Applied Physics, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - G Feijoo
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - M T Moreira
- CRETUS, Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
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Enhanced artificial intelligence for electrochemical sensors in monitoring and removing of azo dyes and food colorant substances. Food Chem Toxicol 2022; 169:113398. [PMID: 36096291 DOI: 10.1016/j.fct.2022.113398] [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: 05/25/2022] [Revised: 08/11/2022] [Accepted: 08/25/2022] [Indexed: 11/22/2022]
Abstract
It is necessary to determine whether synthetic dyes are present in food since their excessive use has detrimental effects on human health. For the simultaneous assessment of tartrazine and Patent Blue V, a novel electrochemical sensing platform was developed. As a result, two artificial azo colorants (Tartrazine and Patent Blue V) with toxic azo groups (-NN-) and other carcinogenic aromatic ring structures were examined. With a low limit of detection of 0.06 μM, a broad linear concentration range 0.09μM to 950μM, and a respectable recovery, scanning electron microscopy (SEM) was able to reveal the excellent sensing performance of the suggested electrode for patent blue V. The electrochemical performance of an electrode can be characterized using cyclic and differential pulse voltammetry, and electrochemical impedance spectroscopy. Moreover, the classification model was created by applying binary classification assessment using enhanced artificial intelligence comprises of support vector machine (SVM) and Genetic Algorithm (GA), respectively, a support vector machine and a genetic algorithm, which was then validated using the 50 dyes test set. The best binary logistic regression model has an accuracy of 83.2% and 81.1%, respectively, while the best SVM model has an accuracy of 90.3% for the training group of samples and 81.1% for the test group (RMSE = 0.644, R2 = 0.873, C = 205.41, and = 5.992). According to the findings, Cu-BTC MOF (copper (II)-benzene-1,3,5-tricarboxylate) has a crystal structure and is tightly packed with hierarchically porous nanomaterials, with each particle's edge measuring between 20 and 37 nm. The suggested electrochemical sensor's analytical performance is suitable for foods like jellies, condiments, soft drinks and candies.
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Recent advances in Ponceau dyes monitoring as food colorant substances by electrochemical sensors and developed procedures for their removal from real samples. Food Chem Toxicol 2022; 161:112830. [PMID: 35077828 DOI: 10.1016/j.fct.2022.112830] [Citation(s) in RCA: 84] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/04/2022] [Accepted: 01/19/2022] [Indexed: 12/13/2022]
Abstract
Ponceau dyes are one of the food coloring materials that are added to various pharmaceutical, health and food products and give them an appearance. These dyes contain contaminants such as Benzidine, 4-Aminobiphenyl, and 4-Aminoazobenzene that are safe in small amounts, but they are not approved by the US Food and Drug Administration (US-FDA) for human consumption. This study comprehensively was reviewed the properties, applications, chemistry, and toxicity of Ponceau dyes as food colorant substances. Electroanalysis of Ponceau dyes was discussed in detail, and the various electrochemical sensors used to detect and monitor these dyes as food colorant were examined. The applied methods of removing and degradation of these dyes in municipal and industrial wastes were also discussed. Conclusions and future perspectives to motivate future research were also explored.
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González-Rodríguez J, Gamallo M, Conde JJ, Vargas-Osorio Z, Vázquez-Vázquez C, Piñeiro Y, Rivas J, Feijoo G, Moreira MT. Exploiting the Potential of Supported Magnetic Nanomaterials as Fenton-Like Catalysts for Environmental Applications. NANOMATERIALS 2021; 11:nano11112902. [PMID: 34835666 PMCID: PMC8617662 DOI: 10.3390/nano11112902] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 10/23/2021] [Accepted: 10/27/2021] [Indexed: 01/03/2023]
Abstract
In recent years, the application of magnetic nanoparticles as alternative catalysts to conventional Fenton processes has been investigated for the removal of emerging pollutants in wastewater. While this type of catalyst reduces the release of iron hydroxides with the treated effluent, it also presents certain disadvantages, such as slower reaction kinetics associated with the availability of iron and mass transfer limitations. To overcome these drawbacks, the functionalization of the nanocatalyst surface through the addition of coatings such as polyacrylic acid (PAA) and their immobilization on a mesoporous silica matrix (SBA15) can be factors that improve the dispersion and stability of the nanoparticles. Under these premises, the performance of the nanoparticle coating and nanoparticle-mesoporous matrix binomials in the degradation of dyes as examples of recalcitrant compounds were evaluated. Based on the outcomes of dye degradation by the different functionalized nanocatalysts and nanocomposites, the nanoparticles embedded in a mesoporous matrix were applied for the removal of estrogens (E1, E2, EE2), accomplishing high removal percentages (above 90%) after the optimization of the operational variables. With the feasibility of their recovery in mind, the nanostructured materials represented a significant advantage as their magnetic character allows their separation for reuse in different successive sequential batch cycles.
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Affiliation(s)
- Jorge González-Rodríguez
- CRETUS Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (M.G.); (J.J.C.); (G.F.); (M.T.M.)
- Correspondence: ; Tel.: +34-8818-16771
| | - María Gamallo
- CRETUS Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (M.G.); (J.J.C.); (G.F.); (M.T.M.)
| | - Julio J. Conde
- CRETUS Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (M.G.); (J.J.C.); (G.F.); (M.T.M.)
| | - Zulema Vargas-Osorio
- Laboratory of Magnetism and Nanotechnology, Departments of Physical Chemistry, Faculty of Chemistry, and Applied Physics, Faculty of Physics, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (Z.V.-O.); (C.V.-V.); (Y.P.); (J.R.)
- Centre for Functional and Surface Functionalized Glass, Alexander Dubček University of Trenčín, Študentská 2, 91150 Trenčín, Slovakia
| | - Carlos Vázquez-Vázquez
- Laboratory of Magnetism and Nanotechnology, Departments of Physical Chemistry, Faculty of Chemistry, and Applied Physics, Faculty of Physics, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (Z.V.-O.); (C.V.-V.); (Y.P.); (J.R.)
| | - Yolanda Piñeiro
- Laboratory of Magnetism and Nanotechnology, Departments of Physical Chemistry, Faculty of Chemistry, and Applied Physics, Faculty of Physics, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (Z.V.-O.); (C.V.-V.); (Y.P.); (J.R.)
| | - José Rivas
- Laboratory of Magnetism and Nanotechnology, Departments of Physical Chemistry, Faculty of Chemistry, and Applied Physics, Faculty of Physics, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (Z.V.-O.); (C.V.-V.); (Y.P.); (J.R.)
| | - Gumersindo Feijoo
- CRETUS Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (M.G.); (J.J.C.); (G.F.); (M.T.M.)
| | - Maria Teresa Moreira
- CRETUS Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain; (M.G.); (J.J.C.); (G.F.); (M.T.M.)
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Guo C, Wang Y, Wang F, Wang Y. Adsorption Performance of Amino Functionalized Magnetic Molecular Sieve Adsorbent for Effective Removal of Lead Ion from Aqueous Solution. NANOMATERIALS 2021; 11:nano11092353. [PMID: 34578672 PMCID: PMC8467783 DOI: 10.3390/nano11092353] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 09/07/2021] [Accepted: 09/08/2021] [Indexed: 01/20/2023]
Abstract
Lead ion (Pb2+) has high toxicity and brings great harm to human body. It is very important to find an effective method to address lead ion pollution. In this work, amino functionalized CoFe2O4/SBA–15 nanocomposite (NH2–CoFe2O4/SBA–15) was prepared for the effective removal of Pb2+ from aqueous solution. The prepared NH2–CoFe2O4/SBA–15 adsorbent was manifested by using scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), Fourier transform infrared spectrum (FTIR), X-ray powder diffraction (XRD), and Brunauer-Emmett-Teller (BET) analysis. In the meantime, the adsorption conditions, including pH, adsorbent dosage, and adsorption time, were studied. The investigation of adsorption kinetics revealed that the adsorption results conform to the pseudo-first-order kinetic model. The adsorption isotherms research displayed that the adsorption was consistent with the Freundlich model, demonstrating that the adsorption for Pb2+ with the prepared adsorbent was a multimolecular layer adsorption process. In addition, the thermodynamic investigations (ΔG < 0, ΔH > 0, ΔS > 0) demonstrated that the adsorption for Pb2+ with the prepared adsorbent was endothermic and spontaneous. Moreover, the prepared adsorbent showed superior anti-interference performance and reusability, implying the potential application of the adsorbent in actual water treatment. Furthermore, this research may provide a reference and basis for the study of other heavy metal ions.
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Affiliation(s)
- Chuanen Guo
- Shandong University of Political Science and Law, Jinan 250014, China;
| | - Yingying Wang
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; (Y.W.); (F.W.)
| | - Fangzheng Wang
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; (Y.W.); (F.W.)
| | - Yaoguang Wang
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China; (Y.W.); (F.W.)
- Correspondence:
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Puig J, de Castro Alves L, García Acevedo P, Arnosa Prieto A, Yáñez Vilar S, Teijeiro-Valiño C, Piñeiro Y, Hoppe CE, Rivas J. Controlling the structure and photocatalytic properties of three—dimensional aerogels obtained by simultaneous reduction and self-assembly of BiOI/GO aqueous colloidal dispersions. NANO EXPRESS 2021. [DOI: 10.1088/2632-959x/abfd8b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Abstract
Water pollution affects all living habitats, since it is the most basic element that sustains all life forms and, as an exceptional solvent, it readily makes any compound available for living cells, either nutrients or noxious substances. Elimination of molecular contaminants from water quality is one of the most challenging technical problems that conventional treatments like flocculation and filtration fail short to defeat. Particulate photocatalysts, used to degrade contaminants, have the main drawback of their recovery from the water matrices. The inclusion of photocatalytic nanoparticles (NPs) into a large supporting framework, is presented as an innovative approach aiming to ensure a facile separation from water. To this end, three-dimensional (3D) aerogels with photocatalytic properties were prepared by a simple and scalable method based on the reduction—induced self-assembly of graphene oxide (GO) in the presence of BiOI nanoparticles. With the help of ascorbic acid, as a green reducing agent, partial reduction of GO into reduced graphene oxide (RGO) and self-assembly of both kinds of nanostructures into a porous monolith was achieved. BiOI doped RGO aerogels were further stabilized and morphologically controlled using poly (ethylene glycol) as stabilizer. The photocatalytic performance of these aerogels was evaluated by following the discoloration of methylene blue (MB) solution, under visible light irradiation, showing that structure and dispersion degree of NPs to be fundamental variables. Hence, this methodology is proposed to produce hybrid aerogels with controlled morphology and photocatalytic performance that has the potential to be used in water cleaning procedures.
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Basina G, Khurshid H, Tzitzios N, Hadjipanayis G, Tzitzios V. Facile Organometallic Synthesis of Fe-Based Nanomaterials by Hot Injection Reaction. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1141. [PMID: 33924901 PMCID: PMC8145410 DOI: 10.3390/nano11051141] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Revised: 04/24/2021] [Accepted: 04/26/2021] [Indexed: 12/18/2022]
Abstract
Fe-based colloids with a core/shell structure consisting of metallic iron and iron oxide were synthesized by a facile hot injection reaction of iron pentacarbonyl in a multi-surfactant mixture. The size of the colloidal particles was affected by the reaction temperature and the results demonstrated that their stability against complete oxidation related to their size. The crystal structure and the morphology were identified by powder X-ray diffraction and transmission electron microscopy, while the magnetic properties were studied at room temperature with a vibrating sample magnetometer. The injection temperature plays a very crucial role and higher temperatures enhance the stability and the resistance against oxidation. For the case of injection at 315 °C, the nanoparticles had around a 10 nm mean diameter and revealed 132 emu/g. Remarkably, a stable dispersion was created due to the colloids' surface functionalization in a nonpolar solvent.
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Affiliation(s)
- Georgia Basina
- Institute of Nanoscience and Nanotechnology, NCSR Demokritos, 15310 Athens, Greece; (G.B.); (N.T.)
- Department of Chemical Engineering, Khalifa University, Abu Dhabi P.O. Box 127788, United Arab Emirates
| | - Hafsa Khurshid
- Department of Applied Physics and Astronomy, University of Sharjah, Sharjah 27272, United Arab Emirates;
- Department of Physics and Astronomy, University of Delaware, Newark, DE 19711, USA;
| | - Nikolaos Tzitzios
- Institute of Nanoscience and Nanotechnology, NCSR Demokritos, 15310 Athens, Greece; (G.B.); (N.T.)
| | - George Hadjipanayis
- Department of Physics and Astronomy, University of Delaware, Newark, DE 19711, USA;
| | - Vasileios Tzitzios
- Institute of Nanoscience and Nanotechnology, NCSR Demokritos, 15310 Athens, Greece; (G.B.); (N.T.)
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