Table 5 The effect of carbonation on pollutants leachability in aqueous suspensions in the analysed FBC fly ashes.

From: The potential of FBC fly ashes to reduce CO2 emissions

Type of designationSuspensions with FBC fly ashesLimit values of leachability in the PN-G-11011 standard
PF 1PF 2PF 3
cleanwith CO2cleanwith CO2cleanwith CO2
Element/ion, mg/dm3:
Zn0.02200.0240.0370.0280.320.0462.0
Cu0.00300.0010.000720.000260.00060.000200.5
Pb0.00230.00050.000050.000030.000030.000010.5
Ni0.00100.00080.000360.000330.000230.00022
As0.05470.03670.001420.001260.00560.00440.2
Hg0.00150.00140.000450.000220.000480.000470.02
Cd0.00060.00050.00040.000080.000230.000150.1
Cr0.1040.06900.00140.00190.00710.00150.2
Cl1210106.444.39.86.21,000.0
SO42−250259465.3684.3528.9892.3500.0
ChZT mg O2 mg/dm3<5<513.552.7<56.3100
pH10.29.810.77.99.08.06.0–12.0