Development of Sorbents for Water Treatment on the Base of Magnetic Nanoparticles

The quest for nanosized sorption materials has been intense in the last few decades, and the range of practical applications for these materials has expanded to enable the creation of novel strategies for the fabrication of samples of different items. Magnetic nanoparticles of iron oxides, primarily Fe3O4, and magnetic sorbents based on them are among the most potential nanosized absorbents. In this investigation a method and new magnetic sorbents based on crown ethers and magnetic nanoparticles was proposed. Synthesis conditions were selected to obtain Fe3O4 nanoparticles, evaluate the structural and magnetic properties of the synthesized nanoparticles. A methodology for the synthesis and synthesis of magnetic sorbents based on crown ethers was developed and the structural and magnetic properties of the synthesized sorbents were assessed. Structure of crown ethers was investigated by NMR and Mass spectroscopy. Electron dispersive spectroscopy (EDS) and scanning electron microscopy (SEM) were used to examine the morphology and structure of the surfaces of the resultant Nano assemblies.<br>In the investigation process, the sorption behavior of different sulfonamides was compared on nanoparticles and synthesized magnetic composites and selected the most promising sorbent for group concentration of sulfonamides. During investigation the features of sorption of sulfonamides on a magnetic composite were studied depending on the extraction conditions and the nature of the sorbates. On the other hand, factors influencing the value of distribution coefficients have been identified. Additionally, the possibility of using a magnetic composite for the concentration of antibiotics was assessed. This work included a systematic investigation of the sorption of sulfonamides on magnetic sorbents, contingent on the sulfonamide structure and concentration, phase contact time, pH, and solution composition.<br>Studies have demonstrated the potential of MC@Fe3O4 as a magnetic sorbent for sulfonamide concentration. The work's experimental results show that all the sulfonamide under study are sorbed in neutral (zwitterionic) conditions on magnetic sorbents: quantitative sorption (95–97%) is noted in the pH range of 3–8 in the preponderance of this form.