Abstract
NiONPs was synthesized from Ficus Nitida plant under control conditions and which is considerably efficient for removal of dyes from wastewater. The obtained NiONPs was identified by Fourier transform infrared spectra (FTIR), Scanning electron microscopy (SEM), X-ray diffraction (XRD), Energy dispersive x-ray spectroscopy (EDX), Transmission electron microscopy (TEM) analyses and surface area. The removal of toxic thymol sulfone phthalein (TSP) dye by an efficient adsorbent NiONPs has been investigated spectrophotometrically. Variables such as contact time, initial dye concentration, adsorbent dose, temperature and pH of dye solution were studied. Langmuir and Freundlich isotherm models were used to illustrate the equilibrium of the adsorption. The correlation coefficient values of Langmuir and Freundlich equations were found to be in good agreement. A pseudo-second-order mechanism governs the absorption of TSP onto NiONPs. A spontaneous and exothermic process, adsorption was a spontaneous process. In addition, the thermodynamic parameters have been analyzed, and an appropriate reaction mechanism has been presented and discussed in this paper.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
