As it can be seen the concentration of the phenol compounds decreased as the hydrogen peroxide increases. The presence of the anions decreases the rates of the phenolic compounds, the sulfates influence in a smaller degree. For phenol and 2-nitrophenol the difference in slope or degradation rates for chloride and sulfate are 0.71 and 0.55, and only 0.16 for 2-chlorophenol.
The presence of chloride inhibits in greater proportion the formation of hydroxyl radicals than the sulfate , this can be due to some free radicals that are scavenged and the formation of some chlorinated inorganic radicals like Cl•, HClOH•/ClOH•-, Cl2 ・-)
The difference between the chloride and sulfate are for few reasons. First, the sulfates radicals are known more reactive tan the dichloride anion radicals which can react with the phenolic compounds. Second, the formation of hydroxyl radicals is 3 times higher with sulfate. Third, the sulfato-iron (II) complex is believed to be more reactive than just iron to reaction with H2O2 …show more content…
Enough hydrogen peroxide should be administered in order to degradate the possible intermediates formed such as carboxylic acids and quinones. In order to determinate this, COD was measured. The presence of chlorine ions retarded the degradation of the intermediates while the sulfate ions had the same affectation as the reaction with pure phenol. In the case of 2-chlorophenol both ions have the same
The presence of chloride inhibits in greater proportion the formation of hydroxyl radicals than the sulfate , this can be due to some free radicals that are scavenged and the formation of some chlorinated inorganic radicals like Cl•, HClOH•/ClOH•-, Cl2 ・-)
The difference between the chloride and sulfate are for few reasons. First, the sulfates radicals are known more reactive tan the dichloride anion radicals which can react with the phenolic compounds. Second, the formation of hydroxyl radicals is 3 times higher with sulfate. Third, the sulfato-iron (II) complex is believed to be more reactive than just iron to reaction with H2O2 …show more content…
Enough hydrogen peroxide should be administered in order to degradate the possible intermediates formed such as carboxylic acids and quinones. In order to determinate this, COD was measured. The presence of chlorine ions retarded the degradation of the intermediates while the sulfate ions had the same affectation as the reaction with pure phenol. In the case of 2-chlorophenol both ions have the same