what are the example of oxidation refinning and any suitable figures
Answers
The iron metal is oxidized to form the iron oxide known as rust. Electrochemical reactions are great examples of oxidation reactions. When a copper wire is placed into a solution that contains silver ions, electrons are transferred from the copper metal to the silver ions. The copper metal is oxidized.
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Chemical oxidation refers to the use of oxidation reagents such as hydrogen peroxide, chlorine dioxide, and ozone for reduction of residual COD, nonbiodegradable compounds, and trace organic compounds (Bush, 1980; IPIECA, 2010). A typical chemical oxidation system is shown in Fig. 6.14. Utilization of this system is not common in the WWTPs in the petroleum industry (IPIECA, 2010), but it is applicable to small, concentrated streams, where conventional biological oxidation processes are not feasible (Bush, 1980). In other words, when the wastewater contains highly toxic recalcitrant compounds such as the aromatic fraction from the dissolved organic compounds and use of the biological process is not suitable, application of this system may be effective to degrade these compounds (Mota et al., 2008).
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