Document Type: Original Article
Department of Chemical Engineering, Petroleum University of Technology, Abadan, Iran
In this study, the potential of Prosopis cineraria leaf ash (PCLA) as low-cost natural sorbent was evaluated for removing cadmium from aqueous solutions. Various operational factors such as adsorbent dosage, contact time, and solution pH were examined in batch adsorption tests. The X-ray fluorescence spectroscopy (XRF) and Fourier transform infrared spectroscopy (FTIR) analysis were employed to characterize the PCLA sample. The maximum Cd (II) removal percentage of 96% occurred at initial pH of 7.0 and a PCLA dose of 3.0 g/L. The results indicated the pseudo second-order kinetic model showed the best accordance as a kinetic model. This work revealed that PCLA can be applied as effective and cheap adsorbent for cadmium removal from wastewater.