Study on static adsorption of methylene blue by aged-refuse

The effect factors of adsorption treatment of methylene blue (MB) solution by aged-refuse were studied with static absorption method under different conditions. In the meantime, Langmuir and Freundlich isotherm equation , pseudo-first order and pseudo-second order kinetics models were fitted. The results showed: when the initial concentration of MB solution is 10mg·L^-1, the best parameters as follows: the amount of aged-refuse is 25g·L^-1, the best pH was 10, the best time for the shock is 7h, at this time decolonization rate is up to 98.83%; the process of adsorption MB with aged-refuse can be well described by the Langmuir isotherm model, pseudo-second order kinetics models.