Modificação e caracterização do resíduo pó de aciaria elétrica (PAE) para aplicação em reações de redução de cromo (VI)

Química Nova

Leandro Neves De Paula²  Luana Ap. Dos Reis Giusto²  Rodolfo Cesar Rodrigues Filho²  Leandro Rossi Castilho²  Fabiano Magalhães²  Marcelo Gonçalves Rosmaninho¹  Diana Quintão Lima¹ 

[1] ,Universidade Federal de Alfenas Instituto de Química Alfenas MG ,Brasil

关键词: electric arc furnace dust;    hexavalent chromium;    reduction;   

DOI  :  10.1590/S0100-40422013000900009

来源: SciELO

【 摘 要 】

In this study, electric arc furnace dust (EAFD) was thermally modified at different temperatures under H2 flow or charcoal in order to obtain reduced iron phases (Fe3O4, FeO and Fe0). The formation of these phases was confirmed by powder X-ray diffraction. The tests performed for reducing Cr (VI) using resultant materials obtained after thermal treatment of the EAFD showed excellent results, with PAE600H (EAFD reduced at 600 ºC under H2 flow) decreasing around 100% of the Cr (VI) in only 10 minutes of reaction. These results indicate the possibility of adding value to the residue, obtaining materials that offer great potential for environmental applications.

【 授权许可】

CC BY-NC   
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