Resumo

BECERRA-QUINTANA, Rubén et al. Use of Cassava (Manihot Esculenta Crantz) Waste in Removal of Methyl Green and Methyl Orange. Rev. Cient. [online]. 2023, n.46, pp.51-60.  Epub 25-Abr-2023. ISSN 0124-2253.  https://doi.org/10.14483/23448350.19930.

Using cassava roots waste (Manihot esculenta Crantz), a biochar-type material was synthesized for removal of dyes. Work was carried out with cassava flour summited to 673 K and 80 mbar. The material was characterized by Thermogravimetric Analysis (TGA), Differential Scanning Calorimetry (DSC), Attenuated total reflection infrared spectroscopy (ATR-FTIR), Scanning electron microscopy (SEM) and X-ray powder diffraction analysis (PDRX). These analyses showed that the obtained material was thermally stable with sphere aggregates (10 µm diameter), amorphous structure of lignocellulose and type A starch crystalline structure. Synthesized biochar adsorbed methyl orange (116,4 ± 0,2 mg/g and methyl green (94,2 ± 0,2 mg/g) at 308 K. the foregoing demonstrates the ability of this material to remedy contaminated water.

Palavras-chave : adsorbent; adsorbate; biochar; dye; mandioca; root..

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