kinetics and isotherm of sunset yellow dye adsorption on cadmium sulfide nanoparticle loaded on activated carbon

the objective of this study was to assess the potential of cadmium sulfide nanoparticles loaded onto activated carbon (cdsn-ac) for the removal of sunset yellow (sy) dye from aqueous solution. adsorption studies were conducted in a batch mode varying solution ph, contact time, initial dye concentration, cdsn-ac dose. in order to investigate the efficiency of sy adsorption on cdsn-ac, pseudo-first-order, pseudo-second-order kinetic models were studied. it was observed that the pseudo-second-order kinetic model fits better than other kinetic models with good correlation coefficient. equilibrium data were fitted to the langmuir model. it was found that the sorption of sy onto cdsn-ac is followed by these results.