The Application of Sio2Nanoparticles for Anionic Dye Removal from Aqueous Solution

Background & Aims of the Study: Dyes are one of the widespread chemicals which may havemany adverse effects on life cycle. Thus, this study was conducted to survey the RB19 dyeremoval efficacy from aqueous solution, using the SiO2 nanoparticles.Materials and Methods: This study was an experimental-lab study. The batch adsorptionsystem were utilized to evaluated the RB19 dye removal efficiency under different amount ofeffective parameters including contact time, pH, adsorbent dosages, initial RB19 dyeconcentration and temperature.Results: the results of this study showed that the increasing of contact time, adsorbent dosageand temperature (up to 30) can positive effect on dye removal efficiency and can develop thedye removal efficiency, while the increasing of pH and RB19 dye concentration decrease the dyeremoval efficiency. The maximum dye removal efficiency was observed to be 95.72% at pH=5and temperature of 30. Furthermore, the equilibrium studies of the RB19 dye adsorption depictedthat the Langmuir isotherm and pseudo-second-kinetic models was successfully able to describethe equilibrium data.Conclusion: It can be concluded that SiO2 nanoparticles are excellent adsorbent to remove thedyes from aqueous solution