Phosphate immobilization from aqueous solution by fly ashes in relation to th…

Abstract. Phosphate sorption capacities of 15 Chinese fly ashes were determined and related to their composition. The data of P sorption were best fitted to Langmuir equation, and the calculated sorption maxima of phosphate (Qm) ranged from 5.51 to 42.55 mg/g. The Qm value showed a significantly positive correlation with total Ca content (r = 0.9836**) and total Fe content (r = 0.8049**), but …