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has been cited by the following article:

• TITLE: Kinetics and Thermodynamic Studies: Adsorption of Pb, Cr and Ni Ions from Spent Lubrication Oil (SLO) Using Acid Modified Clay

  AUTHORS: Felix Sughnen Atsar, Donald Kukwa, Raymond Ahule Wuana, Beatrice Arwenyo

  KEYWORDS: Adsorption, Heavy Metals, Sorption Mechanism, Pseudo-Second-Order Kinetic Model

  JOURNAL NAME: American Journal of Analytical Chemistry, Vol.12 No.5, May 19, 2021

  ABSTRACT: Adsorption of Pb, Cr, and Ni ions from spent lubrication oil (SLO) by sulphuric acid modified clay (SAMC) was investigated considering the effect of contact time and temperature of the adsorption system. The removal percentage of the heavy metals was found to be temperature and contact time-dependent. Adsorption of the heavy metals increases with an increase in temperature and contact time with 95.0% - 100% adsorption recorded at the temperature of 331 K with the equilibration time of 12 hours. The thermodynamic and kinetics investigation of the adsorption process showed that the adsorption of these metals by the modified adsorbent is a spontaneous and endothermic physical adsorption process that followed the pseudo-second-order kinetic model.