Przemysl Chemiczny, Vol.94, No.6, 956-959, 2015
Attempts to obtain potassium and phosphorus from fly ash from biomass
Flay ash from industrial combustion of biomass was leached with dild. (10%) H2SO4 and HNO3 to recover K and P. The leaching with HNO3 was more efficient than with H2SO4 and resulted in recovering up to 70.2% K and up to 60.4% P contained in the flue ash.