Methylene blue adsorption by timbaúva (Enterolobium contortisiliquum)-derived materials.

Liquid effluents from various dyeing industries often have a high concentration of dyes that diffuse into river systems and can be toxic and non-degradable in the environment. In this study, the potential of the use of timbaúva seed husks in the preparation of four adsorbents tested in the removal of methylene blue was analyzed: in natura, chemically activated material (q = 1.24 ± 0.