Study on Adsorption Properties of Modified Corn Cob Activated Carbon for Mercury Ion

In this study, corn cob was used as raw material and modified methods employing KOH KMnO4 were to prepare activated carbon with high adsorption capacity for mercury ions. Experiments on the effects of different influencing factors ions undertaken. The results showed that when KOH, optimal time 120 min, optimum pH 4; KMnO4, 60 3, amount adsorbent initial concentration both 0.40 g/L 100 mg/L under conditions. process conforms pseudo-second-order kinetic model Langmuir model. Scanning electron microscopy energy-dispersive X-ray spectroscopy (SEM-EDS), Fourier transform infrared (FTIR), photoelectron (XPS) Zeta potential characterization is mainly physical adsorption, surface complexation ion exchange.