Synthesis of novel DFNS/btb/Sn nanoadsorbent and its effect on color removal in industrial wastewater
Fatemeh Amarloo
1
(
Department of Chemistry, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran.
)
Rahele Zhiani
2
(
Department of Chemistry, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran
)
Alireza Motavalizadehkakhky
3
(
Department of Chemistry, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran.
)
Malihesadat Hosseiny
4
(
Department of Chemistry, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran.
)
کلید واژه: Nanoparticle, Dye, wastewater, Adsorbent,
چکیده مقاله :
The increase in population and the expansion of industries and technological progress are the factors that have caused an increase in water consumption and wastewater production and environmental pollution and forced investment into treatment. In this research, the color absorption capability in the presence of Sn NPs stably placed on the surface of dendritic fibrous nanosilica by 1,3-bis(dimethylthiocarbamoyloxy)benzene (DFNS/btb/Sn) can be considered a suitable option in industries and wastewater treatment due to its physical and chemical structure. The adsorption properties of the nanocomposite were investigated. SEM, TEM, and XRD analyzes were carried out to confirm the nanoadsorbent after the confirmation of the nanoadsorbent synthesis was obtained. Its industrial application was investigated in the removal of dye from the textile factory effluent. Reactive red dye 198 was removed from textile wastewater and the best removal efficiencies of 93, 92.2, and 90.5 percent were obtained for the initial dye concentration of 20, 40, and 60 mg/L, respectively, at optimal pH=5 and reaction time of 45 minutes. To determine the type of adsorption isotherm, Langmuir, Nernst and Freundlich adsorption isotherms were used by DFNS/btb/Sn nanoadsorbent, and the results show that the adsorption behavior follows the Langmuir adsorption isotherm equation. In addition, the recyclability of DFNS/btb/Sn was easily separated from the solution and reused ten times. This research can be used as an effective option for the final treatment of wastewater containing low to medium concentrations of dyes.
چکیده انگلیسی :
The increase in population and the expansion of industries and technological progress are the factors that have caused an increase in water consumption and wastewater production and environmental pollution and forced investment into treatment. In this research, the color absorption capability in the presence of Sn NPs stably placed on the surface of dendritic fibrous nanosilica by 1,3-bis(dimethylthiocarbamoyloxy)benzene (DFNS/btb/Sn) can be considered a suitable option in industries and wastewater treatment due to its physical and chemical structure. The adsorption properties of the nanocomposite were investigated. SEM, TEM, and XRD analyzes were carried out to confirm the nanoadsorbent after the confirmation of the nanoadsorbent synthesis was obtained. Its industrial application was investigated in the removal of dye from the textile factory effluent. Reactive red dye 198 was removed from textile wastewater and the best removal efficiencies of 93, 92.2, and 90.5 percent were obtained for the initial dye concentration of 20, 40, and 60 mg/L, respectively, at optimal pH=5 and reaction time of 45 minutes. To determine the type of adsorption isotherm, Langmuir, Nernst and Freundlich adsorption isotherms were used by DFNS/btb/Sn nanoadsorbent, and the results show that the adsorption behavior follows the Langmuir adsorption isotherm equation. In addition, the recyclability of DFNS/btb/Sn was easily separated from the solution and reused ten times. This research can be used as an effective option for the final treatment of wastewater containing low to medium concentrations of dyes.
