Adsorption of tartrazine and sunset yellow anionic dyes onto activated carbon derived from cassava sievate biomass

Abstract The toxic effects of anionic dyes such as tartrazine and sunset yellow on humans the aquatic environment are serious concern. need for removal these from wastewaters led to use adsorption techniques a cheap efficient treatment method. Thus, this research was based preparation low-cost activated carbon derived cassava sievate designated CS, which utilized in simulated wastewater. sorption process carried out under varying factors batch mode. Adsorbent characterization displayed presence surface functional groups by FT-IR porous structure revealed scanning electron microscopy. Optimum dye uptake recorded at pH (1.0–2.0), temperature (30–40 °C), CS dosage (0.1 g), concentration (150 mg/L). A maximum monolayer 20.83 0.091 mg/g dyes, respectively. pseudo-second-order ( R 2 > 0.99) Freundlich 0.92) models were most fitted kinetics isotherm data CS. equilibrium attainment reached within 90 min sequestration. experimental results that both considerably adsorbed onto environmentally compatible sievate.