Study of the Adsorption Balance and Kinetics of Biomass Active Carbon Relative to Methylene Blue

Methylene blue solutions at various concentrations in the active carbon adsorption water phase were used,which were prepared by using corn cores as the raw material.The initial concentration of methylene blue was within a range from 50 to 250 mg/L.The test conditions were as follows:the adsorption time was listed as 1 to 48 hours,the initial concentration of methylene blue was within a range from 50 to 250 mg/L and the temperature was 30 ℃.The adsorption isotherm and kinetic curves of the corn core active carbon when adsorbing the methylene blue were obtained.The test results show that the Freundlich adsorption isotherm model can relatively accurately describe the adsorption phase equilibrium of methylene blue on the corn core active carbon.A quasi second stage reaction model can more accurately describe the adsorption process of the corn core active carbon.When a balance is established,the adsorption capacity of the active carbon ranges from 48.5 to 225 mg/g.It can be known from the foregoing that the corn core active carbon can achieve a best effectiveness for removing the methylene blue pigment in the water solution and is a kind of adsorption agent with a development potential.