Study on the Adsorption Performance of Peanut Shell Biochar Loaded with Perovskite Material for Methylene Blue
In this study,a composite material BC@LF was successfully synthesized via sol-gel method assisted by ultrasound.The surface morphology,composition,crystalline phase,and adsorption parameters of the material were characterized using SEM,XRD,and BET.The adsorption capacity of BC@LF for Methylene Blue(MB)was tested,and the experimental results showed that BC@LF can rapidly adsorb MB,with its adsorption capacity positively correlated with solution pH and temperature.The Point of Zero Charge(PZC)of BC@LF was also determined,indicating a positive surface potential when the pH is below 6.9,and a negative surface potential when the pH is above 6.9.The adsorption kinetics and thermodynamics of BC@LF in the MB adsorption process were analyzed based on experimental results.The adsorption kinetics followed the Elovich model,suggesting a chemical adsorption behavior,while the adsorption thermodynamics conformed to the Freundlich model,indicating non-uniform adsorption of BC@LF.Furthermore,five types of organic pollutants were selected for adsorption tests on BC@LF,demonstrating its universality in adsorbing organic pollutants.
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