Removal of mercury from contaminated saline wasters using dithiocarbamate functionalized-magnetic nanocomposite.

摘要: Abstract In this study, an efficient adsorbent was proposed for the removal of mercury from saline water contaminated with ions. Fe3O4 nanoparticles were modified using tetraethylenepentamine and carbon disulfide to incorporate dithiocarbamate functional group on surface adsorbent. CHNS analysis confirmed successful modification magnetic nanoparticles. The XRD pattern indicated a proper match standard cubic Fe3O4. saturation magnetization final 27 emu g−1. morphology bare silica-coated product investigated FE-SEM analysis. For optimizing adsorption process, response methodology applied, which resulted in significant quadratic model. effect dosage initial concentration Hg (II) much more than that pH. Different concentrations dissolved solids up 2000 mg L−1 had no adverse process due strong interaction between (II). least values RMSE (0.0950) χ2 (0.0009) observed Radke-Prausnitz, Redlich-Peterson, UT isotherms. Maximum capacities calculated Langmuir models 109.5 95.07 mg g−1, respectively. investigation isotherm conducted at pH range 2.0–6.5. results showed increase capacity by increasing Thermodynamic studies demonstrated nature spontaneous endothermic. Recovery successfully carried out HCl 0.5 mol L−1. prepared applied real groundwater.