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

Quimica nova

Cavalotti, Luiz Fernando Rocha¹  Peralta-Zamora, Patricio¹  Rodrigues, Marcio Barreto²  Paiva, Teresa Cristina Brazil de³ 

[1] Universidade Federal do Paraná, Curitiba, Brasil;Universidade Tecnológica Federal do Paraná, Pato Branco, Brasil;Universidade de São Paulo, Lorena, Brasil

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 thepotentiality of reductive-oxidative processes based on zero-valent iron wasstudied aiming the degradation of nitroaromatic compounds and the remediationof residues from the explosive industry. The reductive process was applied asa 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 ofthe respective amine-derivative. The yellow-water residue, containing solubletrinitrotoluene, was notably modified by the reductive process, a fact thatpermitted a substantial enhancement of its biodegradability. Furthermore, thesubsequent photo-Fenton process allowed TOC removal of about 80%.

【 授权许可】

CC BY