Treatment of groundwater contaminated with chlorinated compounds using elemental iron and Fenton's reagent

Química Nova

Jardim, Wilson F.¹  Rhodia Poliamida & Especialidades Ltda, Paulínia, Brasil¹  Arruda, Tatiana Langbeck de¹  Universidade Estadual de Campinas, Campinas, Brasil¹ 

关键词: zero valent iron;    Fenton's reagent;    chlorinated compounds.;   

DOI  :  10.1590/S0100-40422007000700024

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The remediation of groundwater containing organochlorine compounds was evaluated using a reductive system with zero-valent iron, and the reductive process coupled with Fenton's reagent. The concentration of the individual target compounds reached up to 400 mg L-1 in the sample. Marked reductions in the chlorinated compounds were observed in the reductive process. The degradation followed pseudo-first-order kinetics in terms of the contaminant and was dependent on the sample contact time with the solid reducing agent. An oxidative test with Fenton's reagent, followed by the reductive assay, showed that tetrachloroethylene was further reduced up to three times the initial concentration. The destruction of chloroform, however, demands an additional treatment.

【 授权许可】

Unknown