On The Characterization, Utilization and Wastewater Detoxification Potential of Pyrolysed Moringa oleifera Pods and Shells

In this study, previously estimated tannery effluent, with exceptionally high pollutant (Cr) load of 987 mg/L was detoxified using pyrolysed Moringa oleifera Pods (PMOP) and Shells (PMOS). Performance assessments of the derived and characterized adsorbents were based on equilibrium, rate and thermodynamic studies. The equilibrium studies for the sorption of Cr was investigated using four widely known isotherm models (Langmuir, Freundlich, Dubinin-Radushkevich and Temkin isotherm models). The maximum adsorption capacity of PMOS is 277.3 mg/g. Sorption rate is best explained using the Pseudo-second order kinetic model with diffusion through the liquid film surrounding the solid sorbent. Comparison of performance with commercially available activated carbon shows no statistical significant at p< 0.05.