Use of Ligand-based Iron Complexes for Phenol Degradation by Fenton Modified Process

作者：Reyes Ivan A^*; Patino Francisco; Flores Mizram U; Narayanan Jayanthi; Calderon Hilda; Pandiyan Thangarasu

来源：Journal of the Mexican Chemical Society, 2013, 57(2): 96-104.

• Modified Fenton reagent
• factorial design
• iron complexes
• phenol oxidation

The efficiency of phenol degradation by the iron complexes ([Fe(TBMA) Cl-3 center dot 3H(2)O] and [Fe(terpy)Cl-2]) is compared with that of the Fenton reaction. The results show that although the Fenton reaction efficiently oxidizes phenol at low pH%26apos;s, the Fenton modified reagents (iron complexes/H2O2) effectively oxidize phenol at neutral pH. Besides, the factorial designing study is performed by considering three independent variables: (i) [Fe] (A), (ii) pH (B), and (iii) [H2O2] (C). For the Fenton reaction, the normal probability plot reveals that two factors, such as concentration of Fe2+ and interaction{[H2O2]center dot pH} have considerable influence on the phenol oxidation; in the normal probability plot of the complexes, factors C (concentration of H2O2) and AC {[Fe]center dot[H2O2]} have an effect on the oxidation of the phenol by [Fe(terpy)Cl-2]/H2O2, while for [Fe(TBMA)Cl-3 center dot 3H(2)O], factors B and AC significantly influence the degradation. Of both iron complexes, [Fe(TBMA)Cl-3 center dot 3H(2)O]/H2O2 is an excellent oxidant, showing a good response at pH 7.0.

• 出版日期2013-6