Estudo da utilização de serragem de madeira como adsorvente para o tratamento de efluentes têxteis

• Autor(a) principal: Antunes, Maria Lúcia Pereira [UNESP]
• Data de Publicação: 2010
• Outros Autores: Camargo, Stefan Rodrigues Guedes de [UNESP], Jesus, Carolina Petrisin Costa de [UNESP], Russo, Ana Carolina [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://proxy.furb.br/ojs/index.php/rea/article/view/1697; http://hdl.handle.net/11449/135855; http://hdl.handle.net/11449/141861
• topic: Adsorption; Textile dyes; Langmuir isotherms; Sawdust; Adsorção; Corante têxtil; Isoterma de Langmuir; Serragem

The Brazilian textile industry has been a highlight in the global economy. Connected with this high economic performance there is the water consumption and the generation of great volumes of wastewater which present high concentrations of dyes and chemical substances. One of the main techniques used in the treatment of textile effluents is adsorption, which has the activated carbon as the main adsorbent. Recently, studies have been developed to find alternative materials to activated carbon and exhibiting good adsorption capacity of dyes. The aim of this work is to study the potential of sawdust as adsorbent of low cost to remove the dye Direct Green 26. The results of this type of dye removal were obtained through the study of adsorption isotherms obtained by spectrophotometry in the UV-visible region analyzed by the Langmuir model. Finally, a comparison was made of these results with those of other adsorbents. Results showed that the average removal of dye, using sawdust, was 78.8% for an initial concentration of 500mg / L and the maximum adsorption capacity of 119mg / g. These results demonstrate the great potential of sawdust as an adsorbent for the dye Direct Green 26.