Evaluation of the degradation of sodium diclofenac using H2O2/fenton in electrochemical reactor

Quimica nova

Oliveira, Joaquim G.¹  Beati, André A. G. F.¹  Rocha, Robson S.¹  Lanza, Marcos R. V.² 

[1] Universidade Estadual de Campinas, Campinas, Brasil;Universidade São Francisco de Assis, Bragança Paulista, Brasil

关键词: sodium diclofenaco;    electrochemical reactor;    gas diffusion electrode.;   

DOI  :  10.1590/S0100-40422009000200016

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

This paper describes a degradation study of the anti-inflammatory sodium diclofenac in aqueous medium using an electro-chemical flow reactor with a gas diffusion electrode as cathode. Two degradation processes were compared: by H2O2 electro-generated and H2O2 electro-generated/Fe(II). Concentration of sodium diclofenac was determined during the experiments by HPLC. The changes in chemical oxigen demand (COD) were also evaluated. Under the specific reaction conditions, 350 mg L-1 of H2O2 was electro-generated and 99.2% of sodium diclofenac was degradated, with 27.4% COD reduction. At the same conditions, but using Fe(II), drug degradation was 99.4% and the COD reduction was 63.2%.

【 授权许可】

CC BY