Removal of Heavy Metal Nickel-Ions from Wastewaters Using Carbon Nanodots from Frying Oil

Heavy metals pollution becomes a serious environmental problem because heavy metals are nonbiodegradable and some heavy metal ion such as nickel isknown as toxic metal. In this study, we investigated the natural sorbent materials for removing heavy metals nickel-ions in the wastewaters using carbon nanodots (C-Dots) from frying oil. C-Dots was resulted from frying oil by the hydrothermal method at temperature 300oC for 2 h. The results showed that C-Dots could remove heavy metal nickel-ions in the solution. Electric current from the solution of heavy metal nickel-ion decreases with the number of C-Dots and time that used in the process of removal. The intensity of adsorption spectra from nickel ions contained in the wavelength 600-800 nm. C-Dots from frying oil have a great potential asa natural sorbent.