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Ng KA, Low KH, Tay KS. Exploring the potential of Fe(III)-EGTA and Fe(III)-DTPA as the catalysts to enhance UV/persulfate in the degradation of aqueous sulfamethazine. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2023; 95:e10862. [PMID: 37032435 DOI: 10.1002/wer.10862] [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: 11/21/2022] [Revised: 02/12/2023] [Accepted: 04/02/2023] [Indexed: 06/19/2023]
Abstract
The combination of UV and water-soluble Fe(III) complexes is an effective method for generating Fe(II) in situ for activating advanced oxidation processes. This study explored the potential of Fe(III)-diethylenetriaminepentaacetic acid (Fe(III)-DTPA) and Fe(III)-ethylene glycol-bis(2-aminoethylether)-N,N,N',N'-tetraacetic acid (Fe(III)-EGTA) in activating the UV/persulfate (UV/PS) for sulfamethazine removal. The initial screening showed that Fe(III)-EGTA and Fe(III)-DTPA could significantly improve the rate of sulfamethazine removal. The optimum molar ratios of persulfate to Fe(III)-DTPA and Fe(III)-EGTA were 100:1 and 100:2.5. The predicted percentage of sulfamethazine removal under the optimized conditions, obtained using response surface methodology, was ~99% for both catalysts. The pH range of 6 to 8 did not significantly affect the performance of UV/PS in the removal of sulfamethazine. The percentage sulfamethazine removal in the selected water samples was ranged from 93.6% to 99.6%, agreeing with the predicted value. The performance of both catalysts in activating UV/PS is comparable with that of the frequently used Fe(III)-EDDS. PRACTITIONERS POINTS: The potential of Fe(III)-DTPA and Fe(III)-EGTA in activating UV/persulfate (UV/PS) was explored. Fe(III)-DTPA and Fe(III)-EGTA improved the performance of UV/PS in sulfamethazine removal. Fe(III)-DTPA and Fe(III)-EGTA are effective in catalyzing UV/PS under pH 6 to 8. The performance of Fe(III)-DTPA and Fe(III)-EGTA is comparable with well-studied Fe(III)-EDDS.
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Affiliation(s)
- Kuan Aeng Ng
- Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Kah Hin Low
- Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Kheng Soo Tay
- Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
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Justi M, de Freitas MP, Silla JM, Nunes CA, Silva CA. Molecular structure features and fast identification of chemical properties of metal carboxylate complexes by FTIR and partial least square regression. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130405] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Bivalent transition metal complexes of 3-(2-(4-(dimethylamino)benzylidene)hydrazinyl)-3-oxo-N-(thiazol-2-yl)propanamide: Structural, spectral, DFT, ion-flotation and biological studies. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.ejbas.2016.06.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Andrade LAF, Silla JM, Mendonça JGP, Freitas MP. DFT study on the complexation of anions with 1,4,7,10,13,16-hexaazacyclooctodeca-2,5,8,11,14,17-hexaene. J INCL PHENOM MACRO 2017. [DOI: 10.1007/s10847-017-0749-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Dobosz A, Spychała J, Ptak T, Chmielewska E, Maciejewska G, Kafarski P, Młynarz P. Electrochemical and spectroscopic investigations of selected N -heteroalkylaminomethylenebisphosphonic acids with Pb(II) ions. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.06.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Bertoli AC, Garcia JS, Trevisan MG, Ramalho TC, Freitas MP. Interactions fulvate-metal (Zn²⁺, Cu²⁺ and Fe²⁺): theoretical investigation of thermodynamic, structural and spectroscopic properties. Biometals 2016; 29:275-85. [PMID: 26857737 DOI: 10.1007/s10534-016-9914-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 02/03/2016] [Indexed: 11/26/2022]
Abstract
The use of theoretical calculation to determine structural properties of fulvate-metal complex (zinc, copper and iron) is here related. The species were proposed in the ratio 1:1 and 2:1 for which the molecular structure was obtained through the semi-empirical method PM6. The calculation of thermodynamic stability ([Formula: see text]) predicted that the iron complex were more exo-energetic. Metallic ions were coordinated to the phtalate groups of the model-structure of fulvic acid Suwannee River and the calculations of vibrational frequencies suggested that hydrogen bonds may help on the stability of the complex formation.
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Affiliation(s)
- Alexandre C Bertoli
- Instituto de Química, Universidade Federal de Alfenas, UNIFAL, Alfenas, MG, 37130-000, Brazil.
| | - Jerusa S Garcia
- Instituto de Química, Universidade Federal de Alfenas, UNIFAL, Alfenas, MG, 37130-000, Brazil
| | - Marcello G Trevisan
- Instituto de Química, Universidade Federal de Alfenas, UNIFAL, Alfenas, MG, 37130-000, Brazil
| | - Teodorico C Ramalho
- Departamento de Química, Universidade Federal de Lavras, Lavras, MG, 37200-000, Brazil
| | - Matheus P Freitas
- Departamento de Química, Universidade Federal de Lavras, Lavras, MG, 37200-000, Brazil
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Masala A, Vitillo JG, Bonino F, Manzoli M, Grande CA, Bordiga S. New insights into UTSA-16. Phys Chem Chem Phys 2016; 18:220-7. [DOI: 10.1039/c5cp05905d] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
High CO2 volumetric capacity of UTSA-16 is exclusively driven by the formation of direct adducts between CO2 and K+ sites.
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Affiliation(s)
- Alessio Masala
- Department of Chemistry
- NIS and Reference INSTM Center
- 10135 Torino
- Italy
| | - Jenny G. Vitillo
- Department of Chemistry
- NIS and Reference INSTM Center
- 10135 Torino
- Italy
| | - Francesca Bonino
- Department of Chemistry
- NIS and Reference INSTM Center
- 10135 Torino
- Italy
| | - Maela Manzoli
- Department of Chemistry
- NIS and Reference INSTM Center
- 10135 Torino
- Italy
| | | | - Silvia Bordiga
- Department of Chemistry
- NIS and Reference INSTM Center
- 10135 Torino
- Italy
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Tolentino TA, Bertoli AC, dos Santos Pires M, Carvalho R, Labory CRG, Nunes JS, Bastos ARR, de Freitas MP. Applications in environmental bioinorganic: Nutritional and ultrastructural evaluation and calculus of thermodynamic and structural properties of metal-oxalate complexes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 150:750-757. [PMID: 26099826 DOI: 10.1016/j.saa.2015.06.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Revised: 06/03/2015] [Accepted: 06/06/2015] [Indexed: 06/04/2023]
Abstract
Lead (Pb) is known by its toxicity both for animals and plants. In order to evaluate its toxicity, plants of Brachiaria brizantha were cultivated on nutritive solution of Hoagland during 90 days and submitted to different concentrations of Pb. The content of macro and micronutrients was evaluated and there was a reduction on root content of Ca, besides the lowest dosages of Pb had induced an increase of N, S, Mn, Cu, Zn and Fe. The cell ultrastructure of leaves and roots were analyzed by transmission electronic microscopy (TEM). Among the main alterations occurred there were invaginations on cell walls, the presence of crystals on the root cells, accumulation of material on the interior of cells and vacuolar compartmentalization. On the leaves the degradation of chloroplasts was observed, as well as the increase of vacuoles. Structures for the formation of oxalate crystals were proposed through molecular modeling and thermodynamic stability. Calculi suggest the formation of highly stable metal-oxalate complexes.
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Affiliation(s)
| | - Alexandre Carvalho Bertoli
- Departamento de Química, Universidade Federal de Lavras, UFLA, 37200-000 Lavras, MG, Brazil; Instituto de Química, Universidade Federal de Alfenas, UNIFAL, 37130-000 Alfenas, MG, Brazil.
| | - Maíra dos Santos Pires
- Departamento de Química, Universidade Federal de Lavras, UFLA, 37200-000 Lavras, MG, Brazil
| | - Ruy Carvalho
- Departamento de Química, Universidade Federal de Lavras, UFLA, 37200-000 Lavras, MG, Brazil
| | | | - Janaira Santana Nunes
- Departamento de Agricultura e Microbiologia, Universidade Federal de Lavras, UFLA, 37200-000 Lavras, MG, Brazil
| | - Ana Rosa Ribeiro Bastos
- Departamento de Ciência do Solo, Universidade Federal de Lavras, UFLA, 37200-000 Lavras, MG, Brazil
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