Dye removal by sawdust

What is it about?

Often the sawdust is generated as residual final product in various timber industries. This same residue can serve as an easily accessible, low-cost material for biossorver some waste produced by other industries, such as the textile industry. The treatment of sawdust with a polymer known as polyethyleneimine (PEI) showed efficacy in the biosorption process of Direct Red 23 dye reducing the percentage of dye molecules existing in solution.

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Why is it important?

This work generates a perspective view of bioremediation of industrial effluent, particularly effluent having compounds to be hard removed in conventional water treatments currently used. Synthetic textile dyes, in particular azo dyes as the DR23, are known for their high potential toxic, carcinogenic and mutagenic. In an attempt to get material with adsorptive/bisorptive capacity of low cost was thought in the sawdust, as it is generated in large quantities by timber and, if stored at high risk flammable among other problems. The idea of an industrial residue low cost can "clean" other waste difficult to treat is very interesting. The work generates new ideas for the Bioremediation (Biosorption) for future enhancements and insights.

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