Isotherm, Kinetic
and Thermodynamic Studies of Adsorption of Naphthol Blue Black-B Dye from Aqueous
Solution using Synthesised Copper Oxide Nanoparticles
Saraswathi G. and Vasuki M.
Res. J. Chem. Environ.; Vol. 29(6); 51-61;
doi: https://doi.org/10.25303/296rjce051061; (2025)
Abstract
The present research work examined the elimination of Naphthol Blue Black –B dye
from aqueous solution by the use of copper oxide nanoparticles as suitable adsorbent.
The nanoparticles that were synthesised, were characterised by using FTIR, SEM,
EDX and XRD techniques. Studies on batch adsorption were performed by varying factors
such as contact period, adsorbent dose, dye concentration, pH, speed of agitation,
temperature and desorption studies.
Batch adsorption results were explained by applying isotherms like Freundlich, Langmuir,
Dubinin- Raduskevich, Temkin and Jovanoic models. Kinetic data suggested that the
batch mode experiment obeys pseudo second order kinetic model. Examination of thermodynamics
indicated that the process of adsorption is feasible and spontaneous.
