Heavy Metals in Used Lube Oils

 Factors such as surfactant type, H2 source, radical source, water content, reaction time, purging gas, catalysts that could possibly affect the destruction efficiencies were studied. Sonochemical process, adsorption process, and combined destructive adsorption process will be evaluated individually and the destruction efficiencies will be compared. 

he initial study for applying the sonochemical process on the treatment of used oil is concentrated to investigate some factors that may affect the feasibility as well as the efficiency of the sonochemical process. Factors include: • surfactant type/concentration, if needed • H2 source type and concentration, if needed • radical source type and concentration, if needed 101 There are many other factors will also affect the sonochemical process, the optimum condition for these factors will be determined in future studies. Here are some potential parameters that need to be determined: • optimum amount of water in water/oil emulsions • optimal reaction time • optimal reaction temperature • pH/conductivity/OPR of the water in the emulsions • purging gas type and optimal flow rate • energy level and frequency of ultrasound • additional catalysts or chemicals The reaction kinetics for individual contaminant would be different as expected, thus, the optimization design, therefore, should consider every single contaminant involved, and tries to get the balance from all aspects.