Contribution of Irradiation and Dihydroxybenzenes on Iron(III) Reduction in Fenton Process

Journal of the Brazilian Chemical Society

Silva, Beatriz Costa e¹  Nogueira, Raquel F. P.¹  Universidade Estadual Paulista Júlio de Mesquita Filho , Araraquara, Brazil¹ 

关键词:  catechol;    hydroquinone;    complex;    phenol;   

DOI  :  10.5935/0103-5053.20160015

学科分类：化学（综合）

来源: SciELO

【 摘 要 】

The contribution of irradiation and the dihydroxybenzenes (DHB), catechol (CAT) and hydroquinone (HQ), added or formed as phenol oxidation intermediates, was evaluated for the reduction of FeIII and for phenol degradation via Fenton processes. The formation of CAT and HQ was observed during phenol degradation starting with Fe2+ or Fe3+ in the presence or absence of irradiation and their presence increased the rate of phenol degradation, more remarkably when initially added. Initial phenol degradation rate in the presence of DHB in the dark was much higher in comparison to their absence due to the initial higher and faster formation of Fe2+. However, degradation slows down due to the rapid oxidation of DHB, while under irradiation of free iron or citrate complex much higher mineralization is achieved in shorter time.

【 授权许可】

Unknown