DEVELOPMENT OF RICE HUSK ASH ABSORBENT MODIFIED BY FERRIC (III) HYDROXIDE FOR METHYL ORANGE REMOVAL FROM AQUEOUS SOLUTION

Abstract

The results of a synthesis of iron hydroxide-coated rice husk ash material (RHA/Fe(OH)3) that treats methyl orange in aqueous solutions are presented in this study. The characteristics of the material are determined by the methods of XRD and SEM. The results showed that RHA/Fe(OH)3 modified husk ash material exists in an amorphous, porous structure, homogeneous surface with uniform spherical particles of uniform size of about 150 nm. The particles clump together to create multiple active centers that increase methyl orange's processing capacity in the aquatic environment. With an initial methyl orange concentration of 6.5 mg/L and a material dosage of 5 g/L, the highest processing efficiency is 98,19%. The effect of several parameters on the processing of methyl orange was investigated in this study, including pH, reaction time, catalyst amount, and temperature.