Adsorption isotherm, kinetic modeling, and mechanism of neutral red on Auricularia auricularia

In this study, two kinds of Auricularia auricularia (A. auricularia) were selected as biosorbents, and their adsorption behavior to neutral red in aqueous solution was analyzed. The maximum adsorption capacity of AA-1 and AA-Se for neutral red can reach 196.08 and 222.22 mg/g, respectively. Characterized the physicochemical properties of AA-1 and AA-Se by elemental analysis, Fourier transform infrared and scanning electron microscopy. Batch tests have shown that the pH of the solution can greatly affect the adsorption effect. The adsorption process conforms to the pseudo-second-order kinetic model and the Langmuir adsorption isotherm model. This study aims to explore a new efficient and cost-effective adsorbent that not only has high adsorption capacity but also consumes less energy, and has broad application prospects in the treatment of water pollutants.