ADSORÇÃO DE CORANTE TÊXTIL (VIOLETA BRILHANTE 5R REMAZOL) POR SERRAGEM DE MADEIRA MODIFICADA COM ANIDRIDO SUCCÍNICO / ADSORPTION OF TEXTILE DYE (BRIGHT VIOLET Remazol 5R) BY SAWDUST MODIFIED WITH SUCCINIC ANHYDRIDE

AUTOR(ES)
DATA DE PUBLICAÇÃO

2010

RESUMO

This work treated of modified wood sawdust with succinic anhydride and your application as adsorbent for remazol brilliant violet 5R (VR5) textile dye. The new material obtained was designated SMAS. The vibrations spectra indicated the presence of oxygenated groups, being the modification confirmed by Infrared, 13C NMR spectroscopy and titration of acid groups that indicated the introduction of carboxylic groups the material. It was found that the material can act as adsorbent to dye investigated and your active sites further enriched, due to considerably increased the adsorption capacity compared to natural material. Furthermore, the process of adsorption proved to be highly dependent of the pH and the largest amount adsorbed was obtained at pH 2.0. The adsorption of remazol brilliant violet 5R textile dye by wood sawdust modified with succinic anhydride followed the kinetic modeling of second order and was well described by the Freundlich model. In the conditions studied was reached a percentage of removal 51.66%.

ASSUNTO(S)

adsorção serragem de madeira corante têxtil violeta brilhante 5r remazol isotermas quimica analitica adsorption wood sawdust textile dye remazol brillant violet 5r isotherms

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