A number of chars from waste tyre rubber were prepared by carbonisation at 673-1173 K. The effects of holding time, heating rate and particle size on the textural characteristics and elemental composition of the resultant chars were investigated. It was demonstrated that temperatures over 773 K did not have a significant improvement on the total surface area but resulted in lower char yields following increased aromatisation. Modelling of dye adsorption isotherms showed that the Redlich-Peterson expression yields the best-fit between experimental and predicted data. Furthermore, for a larger sized dye like Acid Yellow 117 (MW = 848 g/mol), the amount adsorbed by the tyre char is not directly proportional to the total surface area when compared with a commercial carbon, revealing that factors other than total surface area are involved in the adsorption potential of the tyre chars.


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    Title :

    Tyre char preparation from waste tyre rubber for dye removal from effluents


    Additional title:

    Fertigung von karbonisierten Anteilen aus Abfall-Reifengummi zur Farbstoffentfernung aus Abwässern


    Contributors:

    Published in:

    Journal of Hazardous Materials ; 175 , 1-3 ; 151-158


    Publication date :

    2010


    Size :

    8 Seiten, 7 Bilder, 14 Tabellen, 57 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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