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Massima Mouele ES, Bediako JK, El Ouardi Y, Anugwom I, Butylina S, Mukaba JL, Petrik LF, Zar Myint MT, Kyaw HH, Al-Abri M, Al Belushi MA, Dobretsov S, Laatikainen K, Repo E. Sustainable gliadin - Metal oxide composites for efficient inactivation of Escherichia coli and remediation of cobalt (II) from water. Environ Pollut 2024; 340:122788. [PMID: 37879550 DOI: 10.1016/j.envpol.2023.122788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 09/05/2023] [Accepted: 10/21/2023] [Indexed: 10/27/2023]
Abstract
Bio-based materials facilitate greener approach to engineering novel materials with multifunctional properties for various applications including water treatment. In this study, we extracted gliadin from wheat gluten using alcoholic solvent. The aggregation limitations of gliadin protein were overcome by functionalisation with metal oxides (MOs) TiO2, AgFe2O3 and AgFe-TiO2 prepared by chemical precipitations. The novel composites were characterised by scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), Fourier-transform infrared spectroscopy (FTIR), X-Ray diffraction (XRD), thermogravimetry analysis (TGA), Brunauer Emmet-Teller (BET), and zeta potential. The multifunctionality of MOs-gliadin composites was tested through toxic Escherichia coli (E. coli) inactivation and Co2+ adsorption from water. The antibacterial results showed excellent inhibition under both dark and light conditions. The maximum Co2+ uptake, 101 mg/g was reached with TiO2@gliadin after 24 h and best fitted the Langmuir isotherm model. The adsorption process followed pseudo-second order model with an equilibrium adsorption capacity, qe2= 89.86 mg/g closer to the experimental data. Thermodynamic investigations indicated that ΔG°=-9.677kJ/mol,ΔH°=-123kJ/mol,and ΔS°=0.490J.K/mol, respectively, suggesting that adsorption was spontaneous and endothermic. The regenerated TiO2@gliadin composite was still efficient after five consecutive cycles. This study demonstrates that MOs-gliadin blended composites are sustainable for water purification.
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Affiliation(s)
- Emile Salomon Massima Mouele
- Department of Separation Science, School of Engineering Science, Lappeenranta-Lahti University of Technology (LUT), FI-53850, Lappeenranta, Finland; Environmental and Nano Sciences Group, Department of Chemistry, University of the Western Cape, Bellville, 7535, South Africa.
| | - John Kwame Bediako
- Department of Separation Science, School of Engineering Science, Lappeenranta-Lahti University of Technology (LUT), FI-53850, Lappeenranta, Finland; Department of Food Process Engineering, School of Engineering Sciences, College of Basic and Applied Sciences, University of Ghana, P. O. Box LG 77, Legon, Accra, Ghana.
| | - Youssef El Ouardi
- Department of Separation Science, School of Engineering Science, Lappeenranta-Lahti University of Technology (LUT), FI-53850, Lappeenranta, Finland
| | - Ikenna Anugwom
- Department of Separation Science, School of Engineering Science, Lappeenranta-Lahti University of Technology (LUT), FI-53850, Lappeenranta, Finland
| | - Svetlana Butylina
- Department of Separation Science, School of Engineering Science, Lappeenranta-Lahti University of Technology (LUT), FI-53850, Lappeenranta, Finland
| | - Jean-Luc Mukaba
- Environmental and Nano Sciences Group, Department of Chemistry, University of the Western Cape, Bellville, 7535, South Africa
| | - Leslie F Petrik
- Environmental and Nano Sciences Group, Department of Chemistry, University of the Western Cape, Bellville, 7535, South Africa
| | - Myo Tay Zar Myint
- Department of Physics, College of Science, Sultan Qaboos University, P. O. Box 36, 123 Al-Khoud, Muscat, 123, Oman
| | - Htet Htet Kyaw
- Nanotechnology Research Center, Sultan Qaboos University, P. O. Box 33, Al-Khoud, Muscat, 123, Oman
| | - Mohammed Al-Abri
- Nanotechnology Research Center, Sultan Qaboos University, P. O. Box 33, Al-Khoud, Muscat, 123, Oman
| | - Mohammed A Al Belushi
- Central Laboratory for Food Safety, Food Safety and Quality Center, Ministry of Agriculture, Fisheries Wealth & Water Resources, PO Box 3094, Airport Central Post, 111, Muscat, Oman
| | - Sergey Dobretsov
- Central Laboratory for Food Safety, Food Safety and Quality Center, Ministry of Agriculture, Fisheries Wealth & Water Resources, PO Box 3094, Airport Central Post, 111, Muscat, Oman
| | - Katri Laatikainen
- Department of Separation Science, School of Engineering Science, Lappeenranta-Lahti University of Technology (LUT), FI-53850, Lappeenranta, Finland
| | - Eveliina Repo
- Department of Separation Science, School of Engineering Science, Lappeenranta-Lahti University of Technology (LUT), FI-53850, Lappeenranta, Finland
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