Degradation of nitroaromatic compounds and remediation of residues from the explosive production by reductive-oxidative processes based on zero-valent iron

Química Nova

Universidade Tecnológica Federal do Paraná, Pato Branco, Brasil¹  Paiva, Teresa Cristina Brazil de¹  Cavalotti, Luiz Fernando Rocha¹  Universidade Federal do Paraná, Curitiba, Brasil¹  Rodrigues, Marcio Barreto¹  Universidade de São Paulo, Lorena, Brasil¹  Peralta-Zamora, Patricio¹ 

关键词: zero-valent iron;    photo-Fenton;    nitroaromatics.;   

DOI  :  10.1590/S0100-40422009000600027

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

In this work the potentiality of reductive-oxidative processes based on zero-valent iron was studied aiming the degradation of nitroaromatic compounds and the remediation of residues from the explosive industry. The reductive process was applied as a continuous treatment system, using steel-wool as zero-valent iron source. The process permitted an almost total degradation of nitrobenzene, nitrophenol, nitrotoluene, dinitrotoluene and trinitrotoluene, probably with generation of the respective amine-derivative. The yellow-water residue, containing soluble trinitrotoluene, was notably modified by the reductive process, a fact that permitted a substantial enhancement of its biodegradability. Furthermore, the subsequent photo-Fenton process allowed TOC removal of about 80%.

【 授权许可】

Unknown