Phenylalanine Removal from Water by Fe3O4 Nanoparticles Functionalized with Two Different Surfactants

در اين كار، كاربرد نانوساختارهاي اكسيد آهن پوشش داده شده با با CTAB و BKC جهت حذف فنيل آلانين از آب بررسي شد. جداسازي فاز جامد و اسپكتروسكوپي فرابنفش براي بررسي توانايي جداسازي بررسي شد. نانوذرات مغناطيس سنتز شده توسط پراش اشعه X ، ميكروسكوپ الكتروني روبشي، اسپكتروسكوپي مادون قرمز شناسايي شد. نتايج نشان داد كه بيشترين ميزان جذب فنيل آلانين در pH 9 اتفاق مي افتد. واژگان كليدي: BKC، CTAB، نانوذرات، فنيل آلانين

In the present study, the application for the removal of phenylalanine by using two nano sorbents, namely, cetyltrimethylammonium bromide – Coated and BKC (benzal-conium chloride)-Coated Fe3 O4 nanoparticles was investigated. Solid-phase extraction (SPE) and ultra violet–visible spectroscopy were used for studying the removal ability of each nano- sorbent in this study. Scanning Electron Microscopy, X-ray difraction and Fourier infrared were used to characterize the synthesized magnetite nanoparticles. Batch adsorption studies were carried out to study the efect of various parameters, such as contact time, solution pH and concentration of phenylalanine. Te equilibrium adsorption data of phenylalanine onto Fe3 O4 nanoparticles (non-functionalized sample), cetyltrimethylammonium bromide -Coated and BKC -Coated were analyzed using Freundlich and Langmuir adsorption isotherms. Te results indicated that adsorption of phenylalanine increased with increasing solution pH and maximum removal of phenylalanine was obtained at pH=9.0. Correlation coefcient were determined by analyzing each isotherm. It was found that the Freundlich equation showed better correlation with the experimental data than the Langmuir.