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Nkwoada AU, Onyedika G, Oguzie E, Ogwuegbu M. Development of PSA@PS-TiO 2 nanocomposite photocatalyst: structure, mechanism, and application using response surface designs and molecular modeling. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2023; 87:2701-2726. [PMID: 37318919 PMCID: wst_2023_148 DOI: 10.2166/wst.2023.148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Using periwinkle shell ash (PSA) and polystyrene (PS), a new-fangled PSA@PS-TiO2 photocatalyst was fabricated. The morphological images of all the samples studied using a high-resolution transmission electron microscope (HR-TEM) showed a size distribution of 50-200 nm for all samples. The SEM-EDX showed that the membrane substrate of PS was well dispersed, confirming the presence of anatase/rutile phases of TiO2, and Ti and O2 were the major composites. Given the very rough surface morphology (atomic force microscopy (AFM)) due to PSA, the main crystal phases (XRD) of TiO2 (rutile and anatase), low bandgap (UVDRS), and beneficial functional groups (FTIR-ATR), the 2.5 wt.% of PSA@PS-TiO2 exhibited better photocatalytic efficiency for methyl orange degradation. The photocatalyst, pH, and initial concentration were investigated and the PSA@PS-TiO2 was reused for five cycles with the same efficiency. Regression modeling predicted 98% efficiency and computational modeling showed a nucleophilic initial attack initiated by a nitro group. Therefore, PSA@PS-TiO2 nanocomposite is an industrially promising photocatalyst for treating azo dyes, particularly, methyl orange from an aqueous solution.
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Affiliation(s)
- Amarachi Udoka Nkwoada
- Department of Chemistry, School of Physical Sciences, Federal University of Technology Owerri, P.M.B. 1526 Owerri, Nigeria E-mail:
| | - Gerald Onyedika
- Department of Chemistry, School of Physical Sciences, Federal University of Technology Owerri, P.M.B. 1526 Owerri, Nigeria E-mail:
| | - Emeka Oguzie
- Department of Chemistry, School of Physical Sciences, Federal University of Technology Owerri, P.M.B. 1526 Owerri, Nigeria E-mail: ; Africa Centre of Excellence in Future Energies and Electrochemical Systems (ACE-FUELS), Federal University of Technology Owerri, P.M.B. 1526 Owerri, Imo State, Nigeria
| | - Martin Ogwuegbu
- Department of Chemistry, School of Physical Sciences, Federal University of Technology Owerri, P.M.B. 1526 Owerri, Nigeria E-mail:
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Oliveira E, da Silva É, Simões T, Dantas É, Ribeiro A, Lucena A, Napoleão D, Peña-Garcia R, Dariva S, Almeida L. Development of a semiconductor tree branch-like photoreactor for textile industry effluent treatment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:64360-64373. [PMID: 34304357 DOI: 10.1007/s11356-021-15522-w] [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: 04/08/2021] [Accepted: 07/15/2021] [Indexed: 06/13/2023]
Abstract
This paper aimed to develop a new photocatalytic reactor design with a rotary tree branch structure for wastewater treatment in the textile industry. The brass sheet calcined at 500 °C (B500) was used as the photocatalyst and as a substrate for ZnO nanoparticle immobilization (B500ZnO). The photoreactor performance was evaluated toward the photodegradation of an aqueous solution of Reactive Black 5 dye (AS-RB5), raw wastewater (RW), and treated wastewater (TW). X-ray diffraction (XRD) and scanning electron microscopy (SEM) results illustrated ZnO nanowire formation over B500 and B500ZnO substrates. The bandgap values of these samples were estimated by diffuse reflectance measurements. The effects of dye concentration, the type of radiation, and ZnO NP deposition on the degradation of AS-RB were evaluated. Decreases in chemical oxygen demand (COD) greater than 82% were obtained using solar irradiation and artificial light as the energy source. Regarding calcined brass sheet reutilization, a decrease of 45% in the photocatalytic activity efficiency after 5 cycles was noted due to the effect of photocorrosion of the ZnO nanowires. The photoreaction of the RW and TW effluents showed COD values of 21 and 35%, respectively, which are below the limits established by state environmental control. With respect to RB5 addition to the TW effluent (TW-RB5), a discoloration of 62% was noticed after 3 h of photodegradation. Furthermore, the toxicity tests of the AS-RB5 and TW-RB5 samples did not display toxic intermediates after the photoreaction since 80% of the seeds germinated. Finally, the photoreactor exhibited good performance regarding the decrease in effluent pollutant charge, in addition to the efficient discoloration of RB5 dye.
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Affiliation(s)
- Evelle Oliveira
- Department of Chemical Engineering, Technology and Geoscience Center, Federal University of Pernambuco, Recife, PE, CEP 50740-521, Brazil
| | - Émerson da Silva
- Department of Chemical Engineering, Technology and Geoscience Center, Federal University of Pernambuco, Recife, PE, CEP 50740-521, Brazil
| | - Thiago Simões
- Department of Chemical Engineering, Technology and Geoscience Center, Federal University of Pernambuco, Recife, PE, CEP 50740-521, Brazil
| | - Érica Dantas
- Department of Chemical Engineering, Technology and Geoscience Center, Federal University of Pernambuco, Recife, PE, CEP 50740-521, Brazil
| | - André Ribeiro
- Department of Chemical Engineering, Technology and Geoscience Center, Federal University of Pernambuco, Recife, PE, CEP 50740-521, Brazil
| | - Alex Lucena
- Department of Chemical Engineering, Technology and Geoscience Center, Federal University of Pernambuco, Recife, PE, CEP 50740-521, Brazil
| | - Daniella Napoleão
- Department of Chemical Engineering, Technology and Geoscience Center, Federal University of Pernambuco, Recife, PE, CEP 50740-521, Brazil
| | - Ramón Peña-Garcia
- Interdisciplinary Laboratory for Advanced Materials (LIMAV), Materials Science and Engineering Graduate Program (PPGCM), Federal University of Piauí, Teresina-Pi, CEP: 64049-550, Brazil
- Federal Rural University of Pernambuco (UFRPE), Academic Units of Cabo de Santo Agostinho, Cabo de Santo Agostinho, PE, CEP 54518-430, Brazil
| | - Silvia Dariva
- Postgraduate Programme in Process Engineering (PEP), Tiradentes University (UNIT), Av. Murilo Dantas, 300, Aracaju, SE, CEP 49032-490, Brazil
| | - Luciano Almeida
- Department of Chemical Engineering, Technology and Geoscience Center, Federal University of Pernambuco, Recife, PE, CEP 50740-521, Brazil.
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Moura MMDMS, Lima VE, Neto AADM, Lucena ALAD, Napoleão DC, Duarte MMMB. Degradation of the mixture of the ketoprofen, meloxicam and tenoxicam drugs using TiO 2/metal photocatalysers supported in polystyrene packaging waste. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2021; 83:863-876. [PMID: 33617493 DOI: 10.2166/wst.2021.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The solution mixture of the non-steroidal anti-inflammatory drugs ketoprofen, meloxicam and tenoxicam was degraded through systems, composed of different photocatalysts based on TiO2 (Fe and Cu) and the hydrogen peroxide oxidant. The monitoring was performed by UV-Vis spectroscopy. Under sunlight radiation, a reduction in peaks was observed with the use of impregnated photocatalysts. After 60 min, the sun/H2O2/Fe-TiO2 system reached degradations of 46.5% and 93.2% at 260 and 367 nm, respectively, and was selected for further studies. The degradation kinetic reached 92 and 96% of degradation after 180 min, for the λ of 260 and 367 nm, respectively. The kinetic curve could be represented by the empirical model proposed by Nichela and co-authors, indicating that besides the heterogeneous photocatalysis that occurs at the surface of the TiO2 there is also the joint effect of the photo-Fenton process. After the treatment, there was no toxicity to cress and lettuce seeds. However, a sensitivity of the thyme seeds to the compounds formed during the treatment was verified. After the fifth treatment cycle, the supported photocatalyst showed degradation higher than 82%. These results indicate that this system is suitable for the treatment of effluents containing pharmaceutical compounds.
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Affiliation(s)
- Maressa Maria de Melo Santos Moura
- Chemical Engineering Department, Universidade Federal de Pernambuco, Avenue Artur de Sá, s/n,Cidade Universitária, 50740-521, Recife, PE, Brasil E-mail:
| | - Victor Estolano Lima
- Department of Civil and Environmental Engineering, Universidade Federal de Pernambuco, Street Acadêmico Hélio Ramos, s/n, Cidade Universitária, 50740-530, Recife, PE, Brasil
| | - Antônio Acacio de Melo Neto
- Department of Civil and Environmental Engineering, Universidade Federal de Pernambuco, Street Acadêmico Hélio Ramos, s/n, Cidade Universitária, 50740-530, Recife, PE, Brasil
| | - Alex Leandro Andrade de Lucena
- Chemical Engineering Department, Universidade Federal de Pernambuco, Avenue Artur de Sá, s/n,Cidade Universitária, 50740-521, Recife, PE, Brasil E-mail:
| | - Daniella Carla Napoleão
- Chemical Engineering Department, Universidade Federal de Pernambuco, Avenue Artur de Sá, s/n,Cidade Universitária, 50740-521, Recife, PE, Brasil E-mail:
| | - Marta Maria M B Duarte
- Chemical Engineering Department, Universidade Federal de Pernambuco, Avenue Artur de Sá, s/n,Cidade Universitária, 50740-521, Recife, PE, Brasil E-mail:
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Gomes RKM, Santana RMR, de Moraes NFS, Júnior SGS, de Lucena ALA, Zaidan LEMC, Elihimas DRM, Napoleão DC. Treatment of direct black 22 azo dye in led reactor using ferrous sulfate and iron waste for Fenton process: reaction kinetics, toxicity and degradation prediction by artificial neural networks. CHEMICAL PAPERS 2021. [DOI: 10.1007/s11696-020-01451-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Aquino RVS, Barbosa AA, Ribeiro LB, Oliveira AFB, Silva JP, Azoubel PM, Rocha ORS. Degradation of leaf green food dye by heterogeneous photocatalysis with TiO2 over a polyethylene terephthalate plate. CHEMICAL PAPERS 2019. [DOI: 10.1007/s11696-019-00804-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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