Effective Adsorptive Removal of Ni2+ from Aqueous Solutions using MgO Adsorbent: A Study of Kinetics and Adsorption Model

Authors

wafaa Hammad

Abstract

The threats to humans' and animals' health are increased by even very modest concentrations of metallic ions in water. Despite the fact that there are numerous treatment options are employed to remove heavy metals from wastewater such as chemical precipitation, ion exchange, membrane filtration, electrochemical treatment, coagulation, flocculation, adsorption and co-precipitation. So many researchers used the method of adsorption which is a highly effective and economical technique for the removing of toxic heavy metals from the wastewater . This paper through some light on the removal of toxic heavy metals ion (nickel (II)) from wastewater using magnesium oxide as adsorbent . Equilibrium models are applied to calculate the Langmuir and Freundlich and kinetics isotherms of the reaction, whereas the isotherm models confirm the experimental data. The sorption of nickel ion (II) onto magnesium oxide was strongly adsorbed dependent on contact time, initial of nickel (II), temperature, pH and adsorbent dosage. Thermodynamic parameters can affirm as ΔG° negative value, and a ΔS°positive value shows that the adsorption of nickel (II) ions by magnesium oxide was spontaneously happened.A positive result indicates endothermic adsorption for ΔH°. Finally, the pseudo-second-order equation provided the adsorption data.

Recommended Citation

Hammad, wafaa (2023) "Effective Adsorptive Removal of Ni2+ from Aqueous Solutions using MgO Adsorbent: A Study of Kinetics and Adsorption Model," Journal of Engineering Research: Vol. 7: Iss. 1, Article 8.
Available at: https://digitalcommons.aaru.edu.jo/erjeng/vol7/iss1/8