Abstract: Addressing the persistent contamination of aquatic ecosystems by synthetic organic dyes, this research investigates the remediation potential of rice husk, a regionally abundant agricultural byproduct, for the sequestration of Methylene Blue (MB). A systematic evaluation was conducted to determine the influence of solution pH, ranging from strongly acidic (pH 2) to highly alkaline (pH 12) on adsorption performance and kinetic behavior. Experimental datasets were subjected to rigorous comparative analysis using linearized pseudo-first-order (PFO) and pseudo-second-order (PSO) models, with statistical validity further scrutinized through Analysis of Variance (ANOVA).