Evaluation of tetracycline removal by adsorption method using magnetic iron oxide nanoparticles (Fe3O4) and clinoptilolite from aqueous solutions

Evaluation of factors affecting tetracycline and diclofenac adsorption by agricultural soils using response surface methodology

“…According to Table S7, the adsorption capacities ( q s ) of the soils S and M for TC and DCF decrease as the concentrations of salt (NaCl) and divalent cations (Mg 2+ , Cu 2+ , and Zn 2+ ) increases. The reduction in the adsorption capacities of the soils S and M may be due to the occupation of their adsorption sites by divalent cations and ions derived from NaCl 13 . A similar inhibitory effect on the adsorption of antibiotics has been observed in the presence of some multivalent metal ions at low soil pH values 47,59–61 .…”

“…The significance of the regression model was evaluated using the F ‐value (Fischer distribution), p ‐value (null‐hypothesis test) and the sum of the squares (SS). If the p ‐values are fewer than 0.05 and the F values are greater than 4–5, the results obtained from the model are significant 13 . In addition, the sum of squares (SS) values of the variables may be high.…”

Hydroxychloroquine Adsorption in Aqueous Medium Using Clinoptilolite Zeolite

“…The bands indicated at 3450 and 1636 cm −1 correspond to the O–H bonds related to the water molecule (Dehghan et al, 2019 ). The peak at 1043 cm −1 is related to asymmetric stretching vibrations of the Si–O-Si and Al–O–Al bonds (Rouhani et al, 2022 ). The characteristic absorption bands of the material, such as the symmetric tetrahedral elongation and the connections between the SiO 4 tetrahedrons, are found at 460 cm −1 and 609 cm −1 , respectively (Trujillo et al, 2013 ).…”

Magnetic Core–Shell Fe3O4@polypyrrole@4-vinylpyridine Composites for the Removal of Multiple Dyes

“…34−36 However, during the adsorption process, they are prone to be agglomerated, and impurity ions may compete with the adsorbate, leading to the inferior adsorption performances of pure Fe 3 O 4 microspheres. 37,38 Fe 3 O 4 nanoparticles are the most widely used materials in the preparation of magnetic nanocomposite adsorbents owing to their unique properties such as chemical stability, uniform particle size, and biocompatibility. 39,40 The functionalized magnetic composites composed of Fe 3 O 4 microspheres wrapped with the conducting polymer can not only improve the dispersion in the matrix but also provide more active sites to interact with target molecules.…”

“…It is highly efficient, does not get affected by temperature, and can quickly separate suspended matter from aqueous solutions with low sample loss. Based on these advantages, this technology has penetrated into various fields. , Fe 3 O 4 microspheres as magnetic materials possess the characteristics of simple preparation, large specific surface area, high reactivity, and superparamagnetism. − However, during the adsorption process, they are prone to be agglomerated, and impurity ions may compete with the adsorbate, leading to the inferior adsorption performances of pure Fe 3 O 4 microspheres. , Fe 3 O 4 nanoparticles are the most widely used materials in the preparation of magnetic nanocomposite adsorbents owing to their unique properties such as chemical stability, uniform particle size, and biocompatibility. , The functionalized magnetic composites composed of Fe 3 O 4 microspheres wrapped with the conducting polymer can not only improve the dispersion in the matrix but also provide more active sites to interact with target molecules. , …”