We have been examined t he recovery of phosphorus from aqueous solution by adsorption using rice husk char and the reuse of the recovered phosphorus as fertilizer are examined.
In this study, the rice husk char and Japanese cedar char were prepared and their phosphorus adsorption performance was evaluated. Phosphorus adsorption isotherms of the rice husk char and the Japanese cedar were Freundlich type. The total pore volume of the char tends to increase as the carbonization temperature rises. The adsorption constant (1/n) of Freundlich tends to increase as the total pore volume of the char increases.
