Hydrogen Peroxide Effect

 The study of the effects of hydrogen peroxide content on heavy metal removal is shown in Figure 4-9. Though 1.5% of hydrogen peroxide can give slightly better removal efficiencies on heavy metals from used oil than 1.0% of hydrogen peroxide used in the preliminary test runs. However, if we consider from the economic point of view when this application expands to large scale, it would be more cost-effective using 1.0% of hydrogen peroxide as the optimal condition.