Revealing efficacy of AgCuFe2O4@GO/MnO2 in 3D electrochemical oxidation for ceftriaxone degradation in aqueous media: Optimization and mechanisms

IF 6.7 2区 环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Environmental Technology & Innovation Pub Date : 2024-11-26 DOI:10.1016/j.eti.2024.103914
Majid Hashemi , Fatemeh Rahimi , Sahar Abolghasemi , Alireza Nasiri , Saeed Rajabi
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Abstract

Ceftriaxone (CEF), a broad-spectrum antibiotic with a long half-life, is extensively used for the curative purposes of many bacterial infections. Nevertheless, given its strong resistance and the inefficiency of traditional techniques in breaking it down and eliminating it, this study assessed the use of a synthesized AgCuFe2O4@GO/MnO2 nanoparticle electrode (NPE) in a three-dimensional electrochemical oxidation reaction (3DER) to remove CEF. The AgCuFe2O4@GO/MnO2 NPE was fabricated by a co-precipitation process aided by a microwave. The physical and chemical structure of the nanocomposite was determined and verified using a range of analytical techniques, such as FESEM, XRD, EDS-mapping, FTIR, BET, VSM, and TGA. These investigations indicated that the NPE had a large specific surface area, a maintained crystal structure, strong magnetic characteristics, and a quasi-spherical morphology. A 3DER with optimal parameters (pH 5, initial CEF concentration 20 mg/L, NPE dose 0.7 g/L, electrode distance 3 cm, 0.12 mM persulfate electrolyte, and 8.5 mA/cm2 current density for 45 minutes) removed 86.8 % of CEF in synthetic samples and 71.3 % in real wastewater samples, with a mineralization rate of 53.4 %, also had 253.2 kWh/g energy consumption. The 3DER matched the pseudo-first-order kinetic and the Langmuir-Hinshelwood model (R2 > 0.9), with KC and KL-H values of 0.954 mg/L.min and 0.032 L/mg. The removal effectiveness of 64.9 % was achieved after five cycles of recovering and regenerating the NPE. The AgCuFe2O4@GO/MnO2 NPE is beneficial for treating a wide range of industrial and hospital wastewaters due to its magnetic characteristics, chemical stability, reusability, and remarkable efficiency.
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来源期刊
Environmental Technology & Innovation
Environmental Technology & Innovation Environmental Science-General Environmental Science
CiteScore
14.00
自引率
4.20%
发文量
435
审稿时长
74 days
期刊介绍: Environmental Technology & Innovation adopts a challenge-oriented approach to solutions by integrating natural sciences to promote a sustainable future. The journal aims to foster the creation and development of innovative products, technologies, and ideas that enhance the environment, with impacts across soil, air, water, and food in rural and urban areas. As a platform for disseminating scientific evidence for environmental protection and sustainable development, the journal emphasizes fundamental science, methodologies, tools, techniques, and policy considerations. It emphasizes the importance of science and technology in environmental benefits, including smarter, cleaner technologies for environmental protection, more efficient resource processing methods, and the evidence supporting their effectiveness.
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