Synthesis of SBA-15/Dithiooxamide as a Novel and Efficient Nano-Composite to Nickel (ll) Ions Removal in the Water Sample

Synthesis of SBA-15/Dithiooxamide as a Novel and Efficient Nano-Composite to Nickel (ll) Ions Removal in the Water Sample

In this research, the surface of SBA-15 Silicate mesoporous has been modified by sodium dodecyl sulfate and Dithiooxamide ligand. The modified Nano-composite was assessed as a potent adsorbent for remove the Ni (II) ions from the industrial wastewater samples. To determine the Nano-composite specifications, which use the transmission electron microscope, and to exact determination of Nano-particles size, BET surface area analysis is used to determine the effective surface of the adsorbent. Moreover, the analysis of CHNS and TGA affirms the presence of Dithiooxamide ligand on SBA-15 mesoporous. It is used the atomic flame absorption spectrometer to assess the measure of Ni (II) ion in solution. Efficient parameters on removing the Ni (II) ions, such as pH, adsorbent dosage and contact time in the temperature range (25, 35 and 45℃), were optimized at different temperatures. The optimal range of pH, adsorbent amount, and contact time was 10, 0.005 g and 120 min, respectively. The adsorption process followed the pseudo-second-order kinetics equation. The balanced data exhibited that the Freundlich model had a high correlation coefficient and exhibited better results concerning to the Langmuir model. Also, thermodynamics studies on Gibbs’ free energy and enthalpy of the adsorption process showed that Nickel (II) ion adsorption performed spontaneously and Endothermic with SBA-15/Dithiooxamide composite.