Cadmium Removal from Contaminated Water Using Polyelectrolyte-Coated Industrial Waste Fly Ash

Table 1

Elemental composition of RFA, AFA, and PEFA as revealed by XRF.

Atomic number	Elements	RFA	AFA	PEFA
14	Silicon (Si)	0	0.76	0.00
15	Phosphorus (P)	1.09	0.66	1.18
16	Sulphur (S)	51.44	86.25	92.50
20	Calcium (Ca)	1.91	2.16	2.23
23	Vanadium (V)	20.22	5.10	1.09
25	Manganese (Mn)	0.1	0.00	0.00
26	Iron (Fe)	11.34	2.10	1.29
28	Nickel (Ni)	13.46	2.95	1.70
30	Zinc (Zn)	0.42	0.00	0.00
42	Molybdenum (Mo)	0.02	0.006	0.005
	Loss on Ignition (LOI)	0.009	0.014	0.005
	Total	100	100	100