Active carbon preparation from treads of tire waste for dye removal in waste water

Journal of the Brazilian Chemical Society

Michael R. Nunes²  Giordana M. Perez¹  Lara F. Loguercio¹  Eliete W. Alves¹  Neftali L. V. Carreño¹  Jorge L. Martins¹  Irene T. S. Garcia² 

[1] ,Universidade Federal do Rio Grande do Sul Instituto de Química Porto Alegre RS ,Brazil

关键词: pyrolysis;    active carbon;    tire tread;    recycling;    dye removal;   

DOI  :  10.1590/S0103-50532011001100002

来源: SciELO

【 摘 要 】

Treads of scrap tires present low contents of inorganic fillers and a large amount of carbon black. In this work, this material was treated with potassium hydroxide and zinc chloride followed by pyrolysis at 500 and 700 °C. The ability to remove methylene blue and methyl orange were investigated under environmental conditions of pH and concentration. Carbons obtained with KOH at 700 °C present superior adsorption capacity. A simulation of this process permitted the characterization of the gases which contributed to surface development. The obtained products present a mesoporous structure and narrow particle size distribution. The presence of contaminants originated from these carbons was investigated in the aqueous media. The absence of zinc and sulfur releasing and the excellent ability to remove organic dye make these materials useful in the treatment of waste water.

【 授权许可】

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