Kinetic Analysis of the Adsorption of Malachite Green onto Graphene Oxide Sheets Integrated with Gold Nanoparticles

Malachite green is extensively used in the textile dye industry and agriculture as fish pests’ pesticide. Biosorption a type of sorption technique that uses biological sorbent. As now, biosorption viewed simple cost-effective process might be an alternative to traditional pollution treatment methods. Bioremediation one branches bioremediation minimise context incorrect waste disposal. The isotherm Green onto graphene oxide were analyzed using three models—pseudo-1st, pseudo-2nd Elovich, fitted non-linear regression. Elovich model was poorest fitting curve based on visual observation best order statistical analysis such root-mean-square error (RMSE), adjusted coefficient determination (adjR2), bias factor (BF), accuracy (AF), corrected AICc (Akaike Information Criterion), Bayesian Criterion (BIC) Hannan–Quinn information criterion (HQC). Nonlinear regression gave values equilibrium capacity qe 6.164 mg/g (95% confidence interval from 5.918 6.410) value pseudo-2nd-order rate constant, k2 0.034 0.024 0.045). Further needed provide proof for chemisorption mechanism usually tied this kinetic.