In this study, a new core-shell FeO@SiO/PAEDTC@MIL-101 (Fe) photocatalyst was prepared by sol-gel method and used to degrade diazinon (DZN) and chlorpyrifos (CPS) from aqueous solutions. The characteristics analyzed by various techniques indicate that the core-shell photocatalyst with a specific surface area of 992 m/g, pore size of 1.35 nm and saturation magnetization of nanocomposite was 12 emu/g has been successfully synthesized and can be separated from the reaction solution by a magnetic field.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
September 2023
The novel photocatalyst of FeO@SiO/PAEDTC@MIL-101(Fe) was prepared based on the sol-gel method, and its structure and morphology were determined by SEM mapping, TEM, XRD, FTIR, and N adsorption-desorption analyses. The photocatalytic activity of nanocomposite was evaluated in comparison with other particles as well as adsorption and photolysis processes. The effect of operating parameters showed that the complete degradation of penicillin G (PNG) can be provided at a photocatalyst dosage of 0.
View Article and Find Full Text PDFThe photocatalytic degradation of ciprofloxacin (CIP) was examined by loading spinel ferrite copper (CuFeO) nanoparticles onto montmorillonite (MMT) under irradiation using UV light. The laboratory parameters were optimized using response surface methodology (RSM), and maximum efficiency (83.75%) was achieved at a pH of 3, CIP concentration of 32.
View Article and Find Full Text PDFThis pilot study synthesized the γ-FeO@SiO@ZIF8-Ag nanocomposites via the hydrothermal method to study its potential use in amoxicillin degradation as a novel photocatalyst in aqueous solutions under visible light radiation. Various diagnostic methods were used to determine the morphology and functional structure of the photocatalyst, and the results confirmed its proper formation. Complete degradation of AMX was obtained at a pH of 5, catalyst dosage of 0.
View Article and Find Full Text PDFIn this study, copper-nickel ferrite (CuNiFeO) nanoparticles were successfully loaded onto multi-walled carbon nanotubes (MWCNTs) by using the coprecipitation method and used as new catalysts (MWCNT-CuNiFeO) in the sonophotocatalytic degradation process of the acid blue 113 (AB113) dye. The success of the MWCNT-CuNiFeO synthesis and its properties were determined by analyzing it using field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray powder diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). A high efficiency of dye removal (100%), total organic carbon (93%), and chemical oxygen demand (95%) were achieved with the following conditions: pH of dye solution = 5, MWCNT-CuNiFeO dosage = 0.
View Article and Find Full Text PDFUnlabelled: In this study, the effectiveness of activated carbon prepared from the fern (ACAF) in order to remove ampicillin from aqueous solution was examined. The preparation of the ACAF was performed through chemical and physical activation processes with the presence of ZnCl and at a temperature of 450 °C. The ACAF yield was 44.
View Article and Find Full Text PDFMost landfill leachates contain organic compounds that cannot be easily separated by conventional biological processes. Recently, integration of membrane bioreactors and electro-oxidation has been proposed as a suitable option for the treatment and separation of organic and inorganic contaminants in leachate. Therefore, in the present study, the performance of submerged electro-membrane bioreactor (SEMBR) along with a conventional membrane bioreactor (MBR) on a pilot scale was evaluated for the treatment of leachate.
View Article and Find Full Text PDFNovel copper-nickel ferrite nanocatalyst loaded on multi-walled carbon nanotube (MWCNTs-CuNiFeO) was synthesized and applied to activate peroxymonosulfate (PMS) in the degradation of the reactive black 5 (RB5). The structure of the catalyst was well characterized by scanning electron microscope (SEM), Fourier-transform infrared spectroscopy (FTIR), and X-ray powder diffraction (XRD). The MWCNTs-CuNiFeO/PMS system showed a high performance in the degradation of RB5 with a kinetic rate of 1.
View Article and Find Full Text PDFBackground: Today, hospitals need managers who, in addition to having the necessary skills for management and leadership, are accountable to stakeholders, especially the community. Accordingly, the purpose of this study was to evaluate the social accountability of managers of public and private hospitals in Tehran.
Materials And Methods: The present study is descriptive-analytical and cross-sectional and was performed on 155 managers of selected public and private hospitals in Tehran.
In the present study, the sonophotocatalytic degradation of acid orange 7 (AO7) dye was evaluated. The catalyst used was the titanium dioxide nanoparticles/graphene oxide (TiO/GO) nanocomposite, which was synthesized using the Hummers and Hoffman's method and the liquid phase deposition method. TiO/GO nanocomposite was characterized through the analyses of transmission electron microscopy (TEM), X-ray diffraction (XRD), Energy Dispersive X-ray (EDX) spectroscopy, Raman spectroscopy, and Fourier transform infrared (FTIR) spectroscopy.
View Article and Find Full Text PDFThe photocatalytic degradation of amoxicillin (AMX) by titanium dioxide nanoparticles loaded on graphene oxide (GO/TiO) was evaluated under UV light. Experimental results showed that key parameters such as initial pH, GO/TiO dosage, UV intensity, and initial AMX concentration had a significant effect on AMX degradation. Compared to the photolysis and adsorption processes, the AMX degradation efficiency was obtained to be more than 99% at conditions including pH of 6, the GO/TiO dosage of 0.
View Article and Find Full Text PDFThe cobalt ferrite loaded on multi-walled carbon nanotubes (MWCNTs-CoFeO) was synthesized and used as a novel catalyst for the degradation of mefenamic acid (MFA) in the presence of peroxymonosulfate (PMS). The results showed that MWCNTs-CoFeO has higher catalytic performance in the activation of PMS and degradation of MFA compared with MWCNTs, Co, Fe, and CoFeO. The highest kinetic constant rate (0.
View Article and Find Full Text PDFIn this study, CoFe O nanoparticles supported on multi-walled carbon nanotubes (MWCNTs), as novel peroxymonosulfate (PMS) activator, were synthesized for degradation of Reactive Black 5 (RB5). The results showed that the maximum removal efficiencies of RB5 (100%), chemical oxygen demand (83.12%), and total organic carbon (65.
View Article and Find Full Text PDFBackground: The literacy level of the elderly is predictive of health behaviors, average hospitalization in health centers, and the type of verbal interaction with health service providers; as the level of literacy changes, the quality of life may also change. This study aimed to determine the relationship between health literacy level and quality of life among the elderly living in nursing homes in 2018-2019.
Materials And Methods: This study was of a descriptive-analytic, correlation type that was performed on 175 elderly of selected nursing homes in Tehran.
CoFeO nanoparticles supported on multi-walled carbon nanotubes (MWCNTs-CoFeO) were synthesized by the co-precipitation method as a novel catalyst for degradation of diclofenac (DCF). The comparative experiments indicated that MWCNTs-CoFeO has a better catalytic activity in degradation of DCF and activation of peroxymonosulfate (PMS) compared to other catalytic systems. This can be attributed to the interaction of MWCNTs with CoFeO in accelerating the absorption process and activating the PMS ( = 22.
View Article and Find Full Text PDFThe electro-oxidation treatment of aqueous solution containing diclofenac (DCF) on a Ti/RuO-TiO electrode in the presence of multi-walled carbon nanotubes (MWCNTs) was studied in a three-dimensional electrochemical (3DE) reactor. The response surface methodology (RSM) based on central composite design (CCD) was utilized to determine the influence of different factors. The results revealed that the obtained polynomial experimental model had a high coefficient of determination (R = 0.
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