The toxic effects of anionic dyes such as tartrazine and sunset yellow on humans and the aquatic environment are of serious concern. The need for the removal of these dyes from wastewaters led to the use of adsorption techniques as a cheap and efficient treatment method. Thus, this research was based on the preparation of a low-cost activated carbon derived from cassava sievate designated as CS, which was utilized in the adsorption of sunset yellow and tartrazine from simulated wastewater. The sorption process was carried out under varying process factors in a batch mode. Adsorbent characterization displayed the presence of surface functional groups by the FT-IR and a porous structure as revealed by scanning electron microscopy. Optimum dye uptake was recorded at pH (1.0–2.0), temperature (30–40 °C), CS dosage (0.1 g), and dye concentration (150 mg/L). A maximum CS monolayer uptake of 20.83 and 0.091 mg/g was recorded for tartrazine and sunset yellow dyes, respectively. The pseudo-second-order (R² > 0.99) and Freundlich (R² > 0.92) models were most fitted to the kinetics and isotherm data of the uptake of the dyes on CS. The adsorption equilibrium attainment was reached was within 90 min of dye sequestration. The experimental results revealed that both sunset yellow and tartrazine dyes were considerably adsorbed onto the environmentally compatible and low-cost activated carbon derived from cassava sievate.

阴离子染料（例如酒石黄和日落黄）对人类和水生环境的毒性影响受到严重关注。从废水中去除这些染料的需求导致了吸附技术作为一种廉价而有效的处理方法的使用。因此，这项研究是基于制备木薯sievate的低成本活性炭，称为CS，用于从模拟废水中吸附日落黄和酒石黄。吸附过程是在不同的过程因子下以间歇模式进行的。吸附剂表征通过FT-IR显示了表面官能团的存在，并且通过扫描电子显微镜显示了多孔结构。在pH（1.0–2.0），温度（30–40°C），CS剂量（0.1 g），和染料浓度（150 mg / L）。酒石黄和日落黄色染料的最大CS单层吸收分别记录为20.83和0.091 mg / g。伪二阶（R ²  > 0.99）和Freundlich（R ²  > 0.92）模型最适合CS上染料吸收的动力学和等温线数据。在染料螯合的90分钟内达到吸附平衡。实验结果表明，日落黄染料和酒石黄染料均被大量吸附在源自木薯筛分物的环境相容且低成本的活性炭上。